Does one thing and does it very well!
There are a lot of DoF apps out there but this one presents the settings and results in a very concise and logical way. After using it for a little while I “upgraded” to the full version (not the PRO version) to get the Hyperfocal distance function, although you can certainly get that from this app. Highly recommended for landscape photographers.
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Nice interface but...
I think there should be an override for diffraction limiter so the user can decide what is acceptable sharpness.
Response from developer
OK, no problem: The current version offers the option to include or exclude the effects of diffraction.
Incorrect Calculation
Great interface, but the calculation is totaly wrong for f-stop numbers above f/16 or so. Not usable for my purposes.
Response from developer
Thanks for your kind words regarding the interface. I must point out, though, that the calculations are indeed correct. The app offers the user the option to include or exclude the effects of diffraction in the calculation of image sharpness. If you disable the diffraction option on the Settings screen, you will find that the app presents the results that you would expect.
Superb app!
I use both a 4s and a D800:- this app is great whichever I'm using, but I will be upgrading to the pro apps from this developer shortly. Thanks very much.
This is the only DOF app photographers should use!
This app is amazing. That said, it also takes some reading and understanding to use it correctly. Some of the other reviewers here are miss-understanding the point. Yes, they are correct in their observation of how DOF "should" increases with larger f numbers. Whereas the app indicates a decrease in DOF as the f number increases. The app is indicating that diffraction is softening the image as the f number increases. This is correct. So, yes, we do get more DOF with higher f numbers, but softer less sharp images. Therefore, there's no point in having great DOF if it's not sharp.
Here's the thing, by definition, DOF is what will "appear" in sharp focus. DOF is a sum of sensor size, focal, distance, aperture, diffraction, viewing size, viewing distance and the viewer’s interpretation. Notice that diffraction is one of the elements of DOF, not contradicting it. The app is just helping you by preventing you from using an f number that is so unsharp that you will most likely not be able to use the image (a decrease in what is in acceptable focus/sharpness). So, the app is correct. And the reviewers are correct (from a technical/math point view if diffraction is not considered), but the app is factoring in more than just math.
As a professional photography trainer, I use all of George's apps every day in my teaching and consulting. And they work! For most users, it is a bit confusing. Therefore, I highly suggest you visit the developer's website and read his articles on DOF, sharpness and diffraction. After that, you will never want to use anther DOF app again (nor should you).
Here's the thing, by definition, DOF is what will "appear" in sharp focus. DOF is a sum of sensor size, focal, distance, aperture, diffraction, viewing size, viewing distance and the viewer’s interpretation. Notice that diffraction is one of the elements of DOF, not contradicting it. The app is just helping you by preventing you from using an f number that is so unsharp that you will most likely not be able to use the image (a decrease in what is in acceptable focus/sharpness). So, the app is correct. And the reviewers are correct (from a technical/math point view if diffraction is not considered), but the app is factoring in more than just math.
As a professional photography trainer, I use all of George's apps every day in my teaching and consulting. And they work! For most users, it is a bit confusing. Therefore, I highly suggest you visit the developer's website and read his articles on DOF, sharpness and diffraction. After that, you will never want to use anther DOF app again (nor should you).
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Great!
Better than the other apps because you adjust the distance and appature with sliders. You can easily compare and help yourself remember values.
Great interface
..But error in calculation. This shows DOF DECREASING above a certain f-stop. In fact it should increase. Author should have compared with other calculators to verify.
Seems pretty accurate
I've shot controlled diffraction tests through all my cameras, and this seems quite accurate. The only thing I'd note is that it doesn't take pixel size into account. As the individual pixels on a certain size sensor decrease, the noticeable effects of diffraction increase.
Technically it looks about right, but they should specify that the depth of field is still increasing at f16, f22, and so on, even though the image is becoming blurrier, which is an important difference in macro photography where diffraction limited images may be objectively better because wider apertures result in too shallow of a depth of field.
4 out of 5 only because they're treating DOF and diffraction as the same thing, otherwise this looks good and works really well.
Technically it looks about right, but they should specify that the depth of field is still increasing at f16, f22, and so on, even though the image is becoming blurrier, which is an important difference in macro photography where diffraction limited images may be objectively better because wider apertures result in too shallow of a depth of field.
4 out of 5 only because they're treating DOF and diffraction as the same thing, otherwise this looks good and works really well.
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Works exactly as it should
The other reviews are right - this shows DoF going down as f number increases. That's because this is the only app I've encountered which takes account of diffraction effects digital Bayer sensors. I'd give it 5 stars if it had the option to ignore this effect for e.g. film cameras.
This is perfect!
This has the best ui for such an app. Thank you for this! Though there might be a big with some settings are high than f11 where it goes to 0 and shouldn't be the case
