Originally posted by Wheatfield I really think that the 135 guys make a lot of noise about very little.
Check a DOF calculator and see what you are really getting. It's a matter of inches at best.
Here's an example:
Nikon D700 with an 85mm lens at f/4 focused at 10'.
Near limit is 9.53ft, far limit is 10.5 ft, for a total of .99 ft (12 inches near as anything)
Move to the K7 with the 55/1.4 also at f/4 focused at 10' and the near limit is 9.27ft, far limit is 10.9ft for a total DOF of 1.59 ft (around over 1ft 7 inches).
That difference could be a big deal, or not, depends on the subject. But things are happening outside of the zone of acceptable sharpness, also. What about the deeper background of each of those shots? (I guess for portraiture the deeper background is meaningless if it's in-studio, but what about something like:
180mm f/4 (120mm FOV equiv, with f/2.5 DOF equiv, f/4 sharpness at plane of focus)
(180mm f/2.8, equiv to about 120mm f/1.8)
(I realize those shots may be meaningless without an equiv aps-c shot for context, just trying to demonstrate with what I have available.)
Quote: Personally, and this is coming from a portrait shooter whose been doing it for 40 years, it isn't that big a deal, and the ones who make a big deal of it are pretty much blowing smoke because they think they have a point to make.
Personally I don't really think it's a huge deal either. It is what it is, and can be useful at times, other times it doesn't matter to the shot one bit. Any 135-er who gets obnoxious about it might be getting defensive and trying to justify their big FF purchase.
Quote: The other side of the coin is that the APS-C shooter can acquire more DOF, and sometimes it does matter. It's a lot easier to shoot macro with APS-C than 135 format, for example.
Agreed, my macro kit is the K20D + Dine 105!
Long telephoto also is where acceptable lenses start getting scarce for FF. ("acceptable' meaning something I could afford. Or lift.)
Quote: Sometimes people blow off one format for another without giving things much in depth thought. I really think the DOF of 135 vs. APS-C debate is one of those times.
I can't see myself giving up asp-c any time soon, too many great lenses, too many advantageous applications.
Quote: However, those nice big 135 format viewfinders beat the heck out of APS-C viewfinders.
Wait until all that's available in the aps-c space is EVFs!
(let's hope not.)
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Last edited by jsherman999; 05-15-2011 at 11:53 PM.