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Simple DoF Calculator: Needs improvements Review

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Needs improvements
Not very useful with long focal lenses. The developer needs to accept the fact that this app for the most part will be used for manual adjustments. For example, I have a manual zoom lens (non-TTL) that covers focal lengths from 650 through 1300. There is no way to calculate a precise hyperfocal plane because the app doesn't cover that range smoothly. The app should cover long ranges in non discrete fashion, because long glass has a very shallow depth of field requiring precise calculations. Forced extrapolations or interpolations just defeat its purpose.
Market_Student on Nov 24, 2011 for Simple DoF Calculator
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Great app
Excelent excelent app
GreatDanny777 on Jun 28, 2011 for Simple DoF Calculator
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Will use this for my 16mm cinematography class. Very easy.
Quite nice! Simple, straight-forward.
DowntownClaytonBrown on May 2, 2011 for Simple DoF Calculator
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No Support for D7000
Unfortunately the Nikon D7000 is not supported. It is not in the selection list of supported cameras even though the AppStore description claims it is supported. Disappointing. The app is easy to use and presents the data in a clean manner.
dslrhobbyist on Apr 10, 2011 for Simple DoF Calculator
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Fractions of a foot instead of inches
The inability of this app to translate DOF into inches rather than fractions of a foot made me uninstall it right away and revert to PhotoCalc. Too bad, I would have really liked to give a better review to this app that tries to offer a simple tool in an elegant graphical fashion but fails due to complete laziness on the part of the developer. When I'm trying to calculate DOF, I need a quick set of measurements, down to smallest increments, rather than being left with mental gymnastics.
Bhnu on Dec 18, 2010 for Simple DoF Calculator
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MATH IS CORRECT, if you understand.
At first glance i thought the math of this calculator was off. Why was it giving smaller DOF measurements for cameras with smaller sensors? It should be the opposite. But then i realized the difference between focal length and angle of view. If you take two cameras with the same 50mm lens, one camera w/ a full frame 35mm sensor and the other with a 1.5x crop sensor, the DOF of the 1.5x crop camera will actually be slightly smaller. The reason is that even though the camera has a smaller sensor (and therefore greater DOF) that lens is now behaving like a 75mm lens. So it is providing the angle of view and the DOF of a 75mm lens on a full frame body. If you want to compare the same angle of view between the two cameras then you need to compensate for the crop factor. In other words a full frame body w/ a 75mm lens will have shallower DOF then a 1.5x crop body w/ a 50mm lens and both cameras will have the same angle of view.
emac2082 on Aug 27, 2010 for Simple DoF Calculator
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