Pentax glass faster than f/1.4

Started Jan 8, 2013 | Discussions thread
Shop cameras & lenses ▾
JNR
JNR
Senior MemberPosts: 2,514Gear list
Like?
Re: Use this depth of field calculator for comparisons
In reply to JNR, Jan 10, 2013

On the question of DoF, an online calculator for the K7 et.al. indicates that 50 f/1.2 yields a total DoF of .57 feet at 10 feet, compared to the 85 f/1.4 yielding .23 feet at 10 feet. Even if you are compensating for framing (which you might or not want to do based on the situation), at 6.5 feet for the 50mm f/1.2 - you are still at .24 feet for DoF; but this isn't really apples to apples because of shift in perspective created by framing closer.

http://www.dofmaster.com/dofjs.html

-- hide signature --

JNR
www.jamesrobins.com

 JNR's gear list:JNR's gear list
Pentax K-3 Pentax smc DA 16-45mm F4 ED AL Pentax smc DA 21mm F3.2 AL Limited Pentax smc DA 40mm F2.8 XS Lens Pentax smc DA 50mm F1.8 +7 more
Reply   Reply with quote   Complain
Post (hide subjects) Posted by
JNR
JNR
JNR
JNR
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow