Depth of Field
Aug 13, 2022 08:19:37 #
Wiloran
Loc: Ontario
Has anyone perhaps discussed the differences in depth of field when comparing a full frame camera to a cropped format camera? My example would be Nikon DX versus Nikon FX.
Aug 13, 2022 08:20:49 #
leftj
Loc: Texas
Wiloran wrote:
Has anyone perhaps discussed the differences in depth of field when comparing a full frame camera to a cropped format camera? My example would be Nikon DX versus Nikon FX.
I'm sure countless have.
Aug 13, 2022 08:23:05 #
Aug 13, 2022 08:23:31 #
Aug 13, 2022 08:26:39 #
Aug 13, 2022 08:31:25 #
Ysarex
Loc: St. Louis
Wiloran wrote:
Has anyone perhaps discussed the differences in depth of field when comparing a full frame camera to a cropped format camera? My example would be Nikon DX versus Nikon FX.
Many times. The basic rule is this. When taking the same photograph -- same perspective, same framing, same exposure (f/stop) -- then the smaller sensor (recording media) = deeper (more) DOF.
A very basic DOF rule that covers using different cameras with different size recording media is this. Given the same perspective, same framing and same aperture size (entrance pupil, not f/stop) all different format cameras produce the same DOF.
Aug 13, 2022 08:36:36 #
Ysarex wrote:
Many times. The basic rule is this. When taking the same photograph -- same perspective, same framing, same exposure (f/stop) -- then the smaller sensor (recording media) = deeper (more) DOF.
This is because in order to maintain the same image size a crop sensor camera needs to be moved farther away from the subject. The greater distance increases DOF without changing the f-stop.
Aug 13, 2022 08:42:26 #
Ysarex
Loc: St. Louis
Tomfl101 wrote:
This is because in order to maintain the same image size a crop sensor camera needs to be moved farther away from the subject. The greater distance increases DOF without changing the f-stop.
That breaks the taking-same-photo requirement. Here's the rule again: When taking the same photograph -- same perspective, same framing, same exposure (f/stop) -- then the smaller sensor (recording media) = deeper (more) DOF. Moving the camera changes perspective and you're not taking the same photo. What's the point of making the comparison if you're taking two different photos?
Aug 13, 2022 08:44:52 #
Tomfl101 wrote:
This is because in order to maintain the same image size a crop sensor camera needs to be moved farther away from the subject. The greater distance increases DOF without changing the f-stop.
(Moved optically, as in wider angle, for the same image size.)
Aug 13, 2022 09:02:40 #
Ysarex wrote:
That breaks the taking-same-photo requirement. Here's the rule again: When taking the same photograph -- same perspective, same framing, same exposure (f/stop) -- then the smaller sensor (recording media) = deeper (more) DOF. Moving the camera changes perspective and you're not taking the same photo. What's the point of making the comparison if you're taking two different photos?
I am considering "same framing" as the same image size in the final photograph. In that case the DOF increases.
Aug 13, 2022 09:27:28 #
Wiloran wrote:
Has anyone perhaps discussed the differences in depth of field when comparing a full frame camera to a cropped format camera? My example would be Nikon DX versus Nikon FX.
Likely countless times. It is of no practical value unless you have or plan to shoot with two or more different frame formats (sensor sizes). There are lots of sensor sizes FF, CF, 5/4, Medium, and many more. Other UHH'ers have explained some "rules". Most people are more interested in how different focal lengths vary on different sensor sized cameras.
Aug 13, 2022 09:31:35 #
Ysarex
Loc: St. Louis
Tomfl101 wrote:
I am considering "same framing" as the same image size in the final photograph. In that case the DOF increases.
Again, what's the point of comparing two different photographs? Keep the framing the same by changing focal length instead of moving the camera and you still get a DOF increase from the smaller sensor and you maintain perspective which allows you to compare taking the same photo between the two formats.
Aug 13, 2022 09:32:02 #
lamiaceae wrote:
Likely countless times. It is of no practical value unless you have or plan to shoot with two or more different frame formats (sensor sizes). There are lots of sensor sizes FF, CF, 5/4, Medium, and many more. Other UHH'ers have explained some "rules". Most people are more interested in how different focal lengths vary on different sensor sized cameras.
I'm not concerned about the DOF difference between sensor formats in the slightest.
Aug 14, 2022 02:26:00 #
Longshadow wrote:
I'm not concerned about the DOF difference between sensor formats in the slightest.
I'm not concerned about the DOF difference between sensor formats in the slightest.
Aug 14, 2022 05:56:51 #
CHG_CANON wrote:
It used to be as popular as UV filters and film vs digital ...
Ah yes, but not as much as Raw vs Jpeg...
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