Tamron 400 F4.

Started Jun 22, 2014 | Discussions thread
KentG Veteran Member • Posts: 4,518
Re: Tamron 400 F4.

The later 360B 300/2.8 is better in the CA and PF areas than the earlier 107B or 60B. I had a 400/4 also that previously belonged to the originator of the Adaptall-2.com website. I thought the lens was plenty sharp but the difference between it and my 360B model was mainly it was not quite as sharp but still very good. The extra stop of the 360B speed wise made it the lens I tended to use most. The 400/4 lens formula was basically a stretched 300/2.8. I also tried the 1.7x AFA on both lenses and I tended to use it most on the 300/2.8.

Kent Gittings

 KentG's gear list:KentG's gear list
Pentax K-5 IIs Pentax K-S1 Pentax K-1 Pentax smc D-FA 50mm F2.8 Macro Pentax FA 150-450mm F4.5-5.6 +3 more
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