CI Photocommunity

Register a free account now!

If you are registered, you get access to the members only section, can participate in the buy & sell second hand forum and last but not least you can reserve your preferred username before someone else takes it.

21mm24mm close focus




Does anyone know what sort of "retro depth of field" one can get (if at all) on a 21 or 24 M? In other words, when the focus is set to .7m and fstop 8, 11, etc will the lens give you any focus closer than .7m? Also, I've seen a 21mm before on ebay that focuses closer (1' 16" I believe) - what's the story on that? I shoot a lot of crowds, tight spaces, etc with foreground objects/people so close focus is important to me (why I still shoot with slrs). For the record, I own a late model non asph 21 and a 24.

Thanks! Charles Peterson


Well-Known Member
If you have a Palm or other pocket PC you can get a program called DOF master. I run it on my Treo 600 phone. It does all these calculations for you.



Thanks Wilson. How about the program for a deskbound G5 (I don't have a pocket pc)? Anyone else? Looking for just a "guesstimation" really.




Oh, just found it online at

Please, Log in or Register to view URLs content!

My questions have been answered.

Now how about that closer focusing 21mm?