- In the calculator, just introduce your camera type (sensor size), aperture, focus distance, focal length (the real one! not the equivalent in 35mm) and teleconverter to calculate the depth of field: Hyperfocal distance: The closest distance at which a lens can be focused while keeping objects at infinity acceptably sharp. When the lens is focused at this distance, all objects at distances from half of the hyperfocal distance out to infinity will be acceptably sharp
- Hyperfocal distance is basically the distance that you can focus to at any given aperture, where the resulting depth of field will retain sharpness in the scene from as far away as infinity to the (hyperfocal distance / 2) point. Calculator and wiki indeed match, if you put 50mm at f8 you would get Hd at 34.3 feet (10.5m)
- The depth of field depends on the adjusted lens aperture, the distance to the test object, the focal length and the pixel size of the camera. the double pixel size is often set taken permissible unsharpness, i.e. one pixel image unsharpness is accepted
- The depth of field can be calculated based on focal length, distance to subject, the acceptable circle of confusion size, and aperture. A particular depth of field may be chosen for technical or artistic purposes. Limitations of depth of field can sometimes be overcome with various techniques/equipment. Factors affecting depth of field. Effect of aperture on blur and DOF. The points in focus.
- The total depth of field is given by the sum of the wave and geometrical optical depths of fields as: d t o t = λ ⋅ n N A 2 + n M ⋅ N A

Depth of field is the point that is closer to you to the point that is farther away from you that is sharp in a photograph. So if you're standing there with your camera in hand, taking a photo of someone who is facing you, depending on your camera settings, there may be some blur in front of them and some behind them. Depth of field is the distance of sharpness in between those two blurs. If this concept is completely foreign to you, I highly encourage you to rea Let's talk about depth of field, how to calculate it with PhotoPills (https://www.photopills.com/) and how you can use the different camera settings to contr.. Depth of Field Equations Depth of Field Equations Hyperfocal distance, near distance of acceptable sharpness, and far distance of acceptable sharpness are calculated using the following equations (from Greenleaf, Allen R., Photographic Optics, The MacMillan Company, New York, 1950, pp. 25-27)

- If depth of field isn't a major issue, say if your subject is against a wall or multiple subjects are all at the same distance from the camera, a general aperture of f/8-f/11 should be fine. For situations like you describe in your question, I'd go for something like f/16 - but don't be afraid to go up around f/22 if you have the light to handle it
- Depth of Field Calculator Use the actual focal length of the lens for depth of field calculations. The calculator will automatically adjust for any focal length multiplier or field of view crop for the selected camera. Focal lengths of digital camera lenses are listed here
- A depth of field calculator is a useful photographic tool for assessing what camera settings are required to achieve a desired level of sharpness. For a background on what everything here means, also see the tutorial on depth of field. Note: CF = crop factor (commonly referred to as the focal length multiplier

- g the actual calculations. On other pages, I present the results my calculations of the hyperfocal distance for the Sony RX100 M1, the Ricoh GR and the Leica X Vario as well as for depth of field.
- The math and equations behind calculating depth of field. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features © 2021.
- The definition is the same in both cases, it's just the consequence that's different. In all cases depth of field depends on the hyperfocal distance and the focus distance, but there are two especially interesting special cases: Set the focus to infiniity and depth of field extends from the hyperfocal distance to infinity. Set it to the hyperfocal distance, then everything from half that distance to infinity is in focus
- How to use the Advanced Depth Of Field Calculator Most depth of field calculators you find online give DoF values based on an accepted Circle of Confusion (CoC). This CoC results from the combination of the selected camera sensor and the following viewing hypothesis: Print size of 8''×10'' (20cm×25cm)
- DoF 4.0 - A Depth of Field Calculator Last updated: 6-Nov-2019 Introduction When you focus a camera lens at some distance and take a photograph, the further subjects are from the focus point, the blurrier they look. Depth of field is the range of subject distances that are acceptably sharp. It varies with aperture and focal length, distance at which the lens is focused, and the circle of.
- d, the depth of field can be calculated by using this formula: D = (n² - NA²) / NA² Where, d is the depth of field, λ is the wavelength of the light from the light source, n is the refractive index of the medium between the specimen and the objective lens, and NA is the numerical aperture of the objective lens

Calculating depth of field: t = A * (S/1440) * (D - F) / F^2. The near focus distance = D/(1+t) The far focus distance = D/(1-t) And the full depth of field is the difference between these. The variables are: A = lens aperture (F Number) S = camera sensor or film plane diagonal size in mm. D = focus distance in mm . F = lens focal length in mm. Of course, the sharpness of focus is subjective. The maximum depth of field that the graph will show is 10 meters (33 feet); depth of field approaches infinity at the hyperfocal distance for each aperture. The minimum distance is 4 times the focal length. The maximum distance is given by: d max ~= focalLength * (750 * focallength / log (focalLength))

** Field capacity is the water content of the soil two to three days after a rain or irrigation event when the remainder of water has been removed by the downward forces of gravity**. This assumes that the water removed from the soil profile is only removed by gravity, not through the plants or through evaporation. Because of this, field capacity estimates are generally done before the growing season. In the USA and some other countries, the soil is considered to be at field capacity when th Calculating Depth of Field Depth of field is, in short, the area which is sharp in the photo. Depth of field is approximately dependent on the sensor size (camera type), the focal length, the aperture and the distance on which is focused Depth of field table for Otus 1.4/85. With maximum aperture, the depth of field with distance set to 2m is only 5cm (1.97m to 2.02m). By stopping down to f/16 you can expand depth of field up to 50cm (1.79m to 2.29m) Depth of field does not depend on lens or camera design other than the variables in the formula so there are indeed general formulas to calculate depth of field for all cameras and lenses. I don't have them all committed to memory so I'd only be copying and pasting from Wikipedia: Depth of field

This calculator will give you the depth of field (HDTV and SDTV). Depth of Field and Depth of Focus Depth of Field and Depth of Focus Enter 3 figures in the column and click calculate * The depth of field specification is further complicated by a type of keystoning aberration that often occurs*. This result can dramatically affect linear measurements and therefore render depth of field unusable. In this article we will take a closer look at depth of field calculations and compare them to physical measurements using the DOF 1-40 depth of field gauge. The gauge, as we will see. Depth of Field Calculator allows you to specify your camera, and then to enter the distance to your point of interest (generally pretty easy to estimate closely enough), your f/stop aperture, and the focal length of your lens. Bingo, back comes the closest point that will be in focus and the furthest. Better yet, if you current settings don't produc a result you need (e.g., a foreground point. DOF Calculator is a free depth of field calculator app for Android. Using this app, you can calculate the depth of field of a camera for a set of given parameters. This app is also capable to calculate the near limit, far limit, and hyperfocal distance of a camera.Some of the cameras that this app supports are Nikon 1 Series cameras, APS-C Cameras, DSLR Full Frame, and Medium Format

Thus, to understand the calculation of depth of field, we need to know what is the maximum size of circle of confusion that would be treated as a point by human eyes. Unfortunately, this maximum size, or diameter, of circle of confusion depends on so many factors. The most important fact is certainly the image size. Suppose the same scene is recorded using two lenses, each of which is used on. **Depth** **of** **Field**. The DOF of a lens is its ability to maintain a desired amount of image quality (spatial frequency at a specified contrast), without refocusing, if the object position is moved closer and farther from the plane of best focus. DOF also applies to objects with complex geometries or features of different height. As an object is placed closer to or farther than the set focus.

- imum aperture field and will appear red
- DoF can calculate magnification from the width of the field of view (easily measured by photographing a ruler placed at the subject distance) and in turn compute the depth of field for macro photography. Quantifying Sharpness - The Circle of Confusio
- ing the hyperfocal distance, we can point the camera at this distance. The resulting depth of field starts from halfway of the hyperfocal distance and extends to infinity. This is, in fact, the maximum depth of field we can get. The concept is shown in the figure below. Why is this hyperfocal distance important? When shooting a distant subject or scene, many people point the camera to that subject(s). While the result may be satisfactory, in many cases the foreground looks out.
- The total depth of field is given by the sum of the wave and geometrical optical depths of fields as: Formula 1 - Total Depth of Field $$d_{ \mathrm{ tot } }= \frac { λ \cdot n } { \mathrm{ NA^2 } } + \frac { n } { \mathrm{ M \cdot NA } } e$
- Depth of field (DOF) is the term used to describe the size of the area in your image where objects appear acceptably sharp. The area in question is known as the field, and the size (in z-space) of that area is the depth of that field. DOF is governed by the angle at which light rays enter the lens

Depth of field depends on two factors, magnification and f-number. Focal length, subject distance, size and circle of confusion (the radius at which blur becomes visible) jointly determine the magnification ** Aperture is probably the first thing most photographers think of when they want to adjust the depth of field**. Large apertures, which correlate to small f-stop numbers, produce a very shallow depth of field. On the other hand, small apertures, or large f-stop numbers, produce images with a large depth of field Depth of Field. The DOF of a lens is its ability to maintain a desired amount of image quality (spatial frequency at a specified contrast), without refocusing, if the object position is moved closer and farther from the plane of best focus. DOF also applies to objects with complex geometries or features of different height. As an object is placed closer to or farther than the set focus distance of a lens, the object blurs and both resolution and contrast suffer. As such, DOF only makes sense. Bokeh simulator and depth of field calculator. This application interactively calculates the camera depth of field and background blur and visually simulates it on a photo together with different types of lens blur (bokeh) for any lens, camera and distance combination. Activating the help mode shows descriptions of the interface elements

- How can I calculate Line scan camera Depth of Field (DOF) Ask Question Asked 2 years, 1 month ago. Active 3 months ago. Viewed 271 times 0. 1. I have an image processing project. I will calculate the best DOF parameter. I have researched about this topic. I found that DOF related to four parameters: 1)Circle of confusion (COC) 2)Aperture of the lens 3)Lens focal length 4)Focus distance.
- DEPTH OF FIELD: is the range of object distance within which objects are in satisfactory sharp focus. Like when I calculated a formula for the Depth of Field of a photograph, wrote about Gravity and Lunar Eclipse & Moon [] Like Like. Reply. Parin Tanawong says: August 18, 2020 at 8:08 am. Wow When I first found your article, I was like ohso longgg. Then I.
- imal magnification, the depth of focus equation can be approximated as: t = 2Nc

For the depth of field calculator, the formulas given in equations (D9a) and (D9b) are used Oct 25, 2014 - How to Calculate Depth of Field You may probably know it already, but depth of field, in simple wor... More information Depth of Field Calculator Canon | Hyperfocal Distance Char Extremely useful, a depth of field calculator comes in handy! Defined, depth of field is the acceptable sharpness in a photograph that extends before and after the focus point of a subject. Much debated, this area of sharpness can be argumentative; however, I feel the best way to decide what is acceptable sharpness is to view the photograph either on a computer screen or printed at. I never check my depth of field with an app or calculate the hyperfocal distance. I just focus on whatever is one-third of the distance away from me into my scene. Conclusion. Whether you're a landscape, portrait or street photographer, understanding depth of field opens a world of creative possibilities. It's true that f/8 - f/11 makes for a great starting point. In some situations.

Calculate the depth-of-field (the 'bokeh' effect) from the technical parameters of your lens/camera and your subject distance. Crop factor. Focal length (mm) Aperture f. Distance (m) Calculate depth of field! Calculation. Circle of Confusion: 0.029 mm the largest blur spot that will still be perceived by the human eye as a point is an empirical constant, only influenced by crop factor. Depth of field calculated in such way means depth which the sensor cannot recognize as blur. This result is the range to indicate the hardest (shallow and narrow) condition. Even the value is out of this range, it does not necessarily means too blur to detect characteristics of the subject. 3 For example, for an image size equivalent to a 35 mm camera, it is 0.033 mm, which is 1/1300 of a. How to accurately calculate the depth of field? How to achieve maximum depth of field, and why are depth of field calculator programs often mistaken in their calculations? Read about it later. NIKON D600 Installations: ISO 125, F4, 1/80 s, 200.0 mm equiv. When to worry about accurate depth of field calculations? Very often, the photographer is required to take sharpness of certain objects, it.

Calculate the resolution and depth of field of the objective lenses of a light microscope. The refractive index of vacuum and air can be treated as 1 each Normal depth of field tables list the depth of field for any combination of aperture and subject distance for a single focal length. I find this a pain in the ass for several reasons: firstly, I have to carry around several charts, secondly if I'm using a zoom lens I have to guess what focal length I'm using, and finally I generally find it easier to gauge the size of the subject rather than. A technical but important element of photography is depth of focus, which is easily confused with depth of field. Sometimes called lens-to-film tolerance, depth of focus has to do with the distance between the camera lens and the film plane or camera sensor F/# and depth of field. Every optical system is characterized by an aperture stop, that determines the amount of light that passes through it. For a given aperture diameter d and focal length f we can calculate the optics F-number: `F//# = f / d` Typical F-numbers are F/1.0, F/1.4, F/2, F/2.8, F/4, F/5.6, F/8, F/11, F/16, F/22, etc. Every increment in the F-number (smaller aperture) reduces. And so it can be very helpful to calculate depth of field in various situations. Even if you're not too concerned about the specific depth of field, it can be helpful to calculate depth of field periodically so that you'll get a better understanding of how different factors affect depth of field. For example, let's assume that I'm using this camera and lens.

- One way to maximise depth of field is to calculate the hyperfocal distance - a job that used to require a complex formula, and plenty of experimentation. Thankfully, you can now use online calculators and apps to carry out the maths for you. A quick trawl of the internet brings up DOFMaster (www.dofmaster.com), a handy (and free) hyperfocal distance calculator. To use it just enter the make.
- Working Distance is the distance from the front mechanical surface of the lens housing to the object's visible face. Depth of Field is the depth of the object that is in acceptably sharp focus. If..
- SENSOR SIZE & DEPTH OF FIELD Sensor size has no effect on the depth of field. A 21mm at T2.8 will always be a 21mm at T2.8, whether it's on a 70mm camera, a Red Dragon, or a Super 35 cam - era. However a 27 mm on a Red Dragon will give you the same Field of View as a 21 mm on Super 35, and using a longer lens gives you less depth of field

Depth of Field Formula - Other. Calculator ; Formula ; Formula: h = ( f * f ) / ( a * c ) n = ( h * d ) / ( h + ( d - f ) ) l = ( h * d ) / ( h - ( d - f ) ) r = l - n Where, h = Hyper Focal Length f = Lens Focal Length a = Aperture c = Negative Format d = Subject Distance n = Near Limit of Acceptable Sharpness l = Far Limit of Acceptable Sharpness r = Depth of FIeld Related Calculator: DOF. CALCULATING DEPTH OF FIELD. In order to calculate the depth of field, one needs to first decide on an appropriate value for the maximum allowable circle of confusion. This is based on both the camera type (sensor or film size), and on the viewing distance / print size combination. Needless to say, knowing what this will be ahead of time often isn't straightforward. Try out the depth of field. Your selection of aperture will determine whether you have a deep or shallow depth of field. Since the hyperfocal distance is located inside the depth of field, any changes to the depth of field will affect it. Using a narrow aperture (large f/stop) will shorten the hyperfocal distance Formulae to calculate the depth of field. The exact calculation of the expansion of the depth of field requires several individual calculations. The formulae used here are based on the publication by Greenleaf, Allen R., Photographic Optics, The MacMillan Company, New York, 1950, p. 25-27. However, these are only simple approximate equations, just like any other equations published on this.

lines/mm (0.0333mm), will have a near focus point of 2490mm and a far focus point of 3926mm. In other words, it will have a Depth of Field of 1436mm (3926-2490=1436). Stop down (reduce the lens iris size) to f/16 and the Depth of Field becomes almost 6705mm. Reducing the iris aperture size can increase the Depth of Field! This however, also reduces the amount of light being transmitted though the lens and so may require brighter illumination I have a question concerning Depth of Field -*I'm trying to find a depth of field calculation method that applies for video projection. Background info is that I often have projection on non-planar surfaces and like to find a method that allows to calculate (without trying out) if with a given video projector (and lens) and a projection distance and a minimum audience distance a projection.

- Depth of field calculator. DoF calculator will help you assess what camera settings are required to achieve a desired level of sharpness. Depth of field chart. This chart is the fastest way to have your DoF calculations done. Conclusion. If I were you, I wouldn't obsess too much about the actual size of the DoF. To be fair; I never even calculated the DoF. Pulling out your phone in the.
- In fact much of the depth of field illustrated in this video ranges from 49% in front of the focal point & 51% behind; to 25% in front & 75% behind (behind being away from your camera)
- Just saying, do realize that in the math of Depth of Field calculations, the blur of a point at the end of the computed DOF range has reached the full size of this Maximum Allowable CoC limit, but is still reported as being in DOF range and acceptably sharp. And then, just the slightest greater distance is reported as exceeding the CoC limit to be unacceptable, because it is computed to have.
- ating light, n is the.
- Depth of Field. The effect descriptions on this page refer to the default effects found within the post-processing stack. Depth of Field is a common post-processing effect that simulates the focus properties of a camera lens. In real life, a camera can only focus sharply on an object at a specific distance; objects nearer or farther from the camera will be somewhat out of focus. The blurring.
- Calculator for DOF and Hyperfocal Distance especially for film cameras. Depth-of-field is how much of a photograph is in acceptable sharp focus from in front of the focus point to behind it. Hyperfocal distance is the distance at which you should focus to produce the greatest depth of field. This is related to the Circle of Confusio
- Depth of Field Calculator for Photographers. Calculates Hyperfocal Distance, Near Focus Limit, Far Focus limit, and Depth of Field (DOF). Has option to select teleconverters, automatically corrects focal length and apertures. Also supports Custom 1 and Custom 2, user editable custom settings for quick retrieval, ideal for multiple camera setup

In the oil and gas industry, depth in a well is the measurement, for any point in that well, of the distance between a reference point or elevation, and that point. It is the most common method of reference for locations in the well, and therefore, in oil industry speech, depth also refers to the location itself.. By extension, depth can refer to locations below, or distances from, a. ** Photographers use depth of field to create certain effects and draw the viewer's attention to particular elements of the scene**. It is important to understand how the aperture setting on your camera, the focal length of the lens, and the distance of your subject affects a photograph's depth of field

- While
**field**calculator operations may be performed at any frequency to which the**Fields**Post-Processor is set, fast sweep solution**field**data (away from the 'center frequency' of the sweep) may not be as accurate for lossy and dispersive media, within the interior of solid-meshed finite conductors, etc. For higher accuracy under these conditions,**field**calculator operations should be. - The depth of field is a portion (specifically a range of working distances) where the image is acceptably sharp, and the ideal working distance will provide the best results in terms of resolution when the beam is focused. There are some cases in which resolution becomes less important and a greater depth of field is desirable, for example, when dealing with tall samples. When imaging an.
- Depth of Field (DoF) is the distance at which an object will be perceived in focus. For example, using an 18mm focal length lens on an APS-C sensor camera such as the Canon EOS Rebel T5i with an aperture of 8 at a distance of 1 meter, you get a Depth of Field of 0.696m to 1.774m, meaning that if you focus your lens at 1 meter, any object within a distance of 0.696m to 1.774m from the camera sensor will be in focus
- Now, at last, we've got a simple definition for the depth of field: If the lens is focused on a point at h/n (i.e., u=h/n), then everything in the distance range from h/(n+1) to h/(n-1) will be in sharp in the image. So, the formula for depth of field is: DoF = uf - un = h/(n - 1) - h/(n + 1)
- Depth of Field Calculation Let us considet the negative format is DSLR APS-C, aperture is F2, focal length of the lens is 100 mm and distance is 12 meters. Hyperfocal length = 100^2 / (2 / 0.025) = 200

To summarize controlling depth of field: Widen your aperture (smaller f-number) Move closer to the subject Lengthen your focal lengt Calculate depth of field. For a given lens, enter the focal length, aperture, the distance to your subject, and the camera's sensor size. The length of the depth of field is displayed below the fields and updates as you change the values. Be sure to use the actual focal length of the lens (e.g. as printed on the front of the lens)—don't convert it to the 35mm equivalent. Feel free to. What depth of field can be expected? Here is an easy to use calculator for these questions. Just enter the focal length of your lens, distance to your subject and selected f-stop, and see what happens. The calculator works both online and offline Total depth of field =.91 in Given that a 50mm is not a long lens, and 2.8 is not a very wide open aperture, compared to sexy lenses like a 1.2, it was very surprising (to me) that even at 24 from the subject we have less than one inch of depth of field! At f32, 50mm, 24 inches. The depth of field calculator says

Calculating Hyperfocal Distance and Depth of Field . Appendix Ricoh GR (APS-C) with CoC = 0.020 mm and Focal Length of 18.3 mm . This is the table that should be compared with my own calculations. Ricoh GR (APS-C) with CoC = 0.020 mm and Approximated Focal Length of 18 m To widen the area that is entirely in focus, increase depth of field. This sets a depth slice around the focus plane that is entirely in focus (and shown in green whenever output is set to focal plane setup ). True theoretical depth of field would set this to zero. Depth of field set to 0 The following equations are used for TMR calculations: TMR = dose at depth in tissue for field size (D_dx) / dose at depth of maximum dose for the same field size (D_dmax). Dose at depth = dose at isocenter * (TMR_depth in tissue / TMR_depth of isocenter) * inverse square correction. Equivalent Square = 4 * Area (A) / Perimeter (P) In this lesson we go through the steps of using a depth of field calculator, as well as a list of advanced tips and tricks to push it around your set. Note: For this lesson we used the Digital DoF iPhone app by Indie Film Gear, LLC. When running calculations online, we used PhotoPills Depth of Field Calculator. These may not be the best for your needs, they are just what we use since they get the job done. You may notice that calculations are slightly different depending on which.

Depth of Field (DOF) in photography refers to the area in front and behind the subject in your photograph that appears in focus, while all other areas appear to be out of focus or blurred. DOF is used by photographers to create a more dramatic effect in their pictures. Read the instructions below for single lens reflex (SLR) and digital single lens reflex (DSLR) cameras to learn how to achieve depth of field in photography Defining Deep Depth of Field What does a large depth of field mean? A large depth of field means a deep depth of field. But before we define what the heck that means, let's do a quick recap on depth of field and what affects it, the aperture.This post assumes you're somewhat familiar with these two terms, so make sure you can answer what is depth of field, and what is aperture How Much Blur Camera depth of field (DOF) bokeh calculator with photos. How Much Blur will tell you about your camera lens sharpness, how fast they are when compare with other lens. Do you know how much blur of your lens

Jan 23, 2013 - Learn the basics of depth of field: how to adjust it, when to use it and why there is a direct relation between it and aperture For many cameras, depth of field (DOF) is the distance between the nearest and the farthest objects that are in acceptably sharp focus in an image.The depth of field can be calculated based on focal length, distance to subject, the acceptable circle of confusion size, and aperture.A particular depth of field may be chosen for technical or artistic purposes Use a depth of field calculator - Depth of field calculators compute hyperfocal distance. I'm not going to go into the math of it all in this article. Simply, DoF calculators figure out how much of a scene will be in focus. Especially important is how much in front of and behind your subject will be in focus. Usually, about 1/3 of the scene in front of your subject will be in focus, and 2. The calculator determines the depth of field of a microscope with a digital camera. Example: Calculate the depth of field of an optical microscope with 100× oil-immersed (n = 1.52) objective with numerical aperture NA = 1.25. The pixel pitch of the microscope camera is 4 μm and the wavelength is 550 nm (yellow-green)

For 20X magnification, which can be a numerical aperture of 0.6 to 0.8, the **depth** **of** **field** drops to about plus or minus 500 nanometers. Moving into high magnification with oil immersion at a numerical aperture of 1.47, the **depth** **of** **field** drops very dramatically, And the **depth** **of** **field** could be plus or minus 0.1 to 0.2 microns (100 - 200 nm) Measuring that distance gives a very approximate far point for the depth of field of about 96 inches. So the depth of field is about 83 inches. From the depth of field chart, the iPhone without a telephoto lens with a focus distance of 24 inches would produce a depth of field of about 112 inches Bestseller No. 1. mycamera Dof (Depth of Field) Calculator. 1) Simple Interface: You can easily enter distance, focal-length and aperture to get Near and far-focus plus the Hyperfocal distance. 2) Reverse Mode : Enter the depth of field, and get the distance, focal or aperture Depth of Field (DOF) and Hyperfocal Distance Calculator. The online calculator below let's you calculate the depth of field and hyperfocal distance. A word of warning, try not to use the smallest aperture in your lens (f/22, f/32) to avoid diffraction - a sharpness killer. Ok. Now that I know the number, how do I set that hyperfocal distance on my lens? The short answer is: you don't. Modern. If you require working with precise depth of field values based on the aperture of the lens you're using, its focal length, the distance from the lens to the subject, and the circle of confusion, you need Photo Calculator, a tool designed to provide professional photographers with accurate depth of field and hyperfocal distance values