Pentax glass faster than f/1.4

Started Jan 8, 2013 | Discussions thread
JNR
JNR
Senior MemberPosts: 1,915Gear list
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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

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JNR
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Rokinon 14mm f/2.8 IF ED MC Pentax K-01 Pentax K-30 Pentax smc DA 16-45mm F4 ED AL Samyang 8mm F3.5 Aspherical IF MC Fisheye +1 more
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