Luminare
Senior Member
You are correct Bro, there is some conclusion.
For ease of reading, in point form:
1) It is widely accepted in the industry that in different format sensors, there exist differing Depths-of-Field. For DX to FX with Nikon, it is roughly 1 F-Stop
2) 1 F-Stop in DOF difference is relatively thin and hard noticeable unless the print is fairly large that perhaps the difference can be clearly observed
As for the rest of the "Science" ...... leave up to the folks who wanna be Mythbusters while we as photographers continue to enjoy creating photographic images
For ease of reading, in point form:
1) It is widely accepted in the industry that in different format sensors, there exist differing Depths-of-Field. For DX to FX with Nikon, it is roughly 1 F-Stop
2) 1 F-Stop in DOF difference is relatively thin and hard noticeable unless the print is fairly large that perhaps the difference can be clearly observed
As for the rest of the "Science" ...... leave up to the folks who wanna be Mythbusters while we as photographers continue to enjoy creating photographic images
Actually, the answer is VERY conclusive and there's no debate at all.Read the detailed explanation here for example. I am sure Thom Hogan etc all mean the same thing, just different ways of saying it.
In this Photozone review of the Panasonic m43 12-35 f/2.8 lens, it says:
"Equiv. focal length 24-70 mm (full format equivalent)
Equiv. aperture f/5.6 (full format equivalent, in terms of depth-of-field)"
This is exactly what I am talking about.
Is there a difference between f/2.8 and f/4.2 in terms of DOF? Sure there is! One can even calculate that given the lens focal length, subject distance etc etc.
I did not go through all the links you provided, but in this DPReview post, the writer says:
"With DX camera you used a 16mm lens at f4 and with the FX camera you used a 24mm lens also at f4. Both cameras were used at the same distance to the subject. The images from each camera were each enlarged to print full frame on 11x14 paper. The question is, would there be a difference in DOF between the two paper images?"
Of course, the difference is absent because there is no change in subject distance! That is the wrong way of testing because the framing is totally different between FX and DX (crop factor of 1.5x) in this case, and writer has not taken composition into account. Composition is important because we are dealing with real world photography after all!
