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Latest Review Posted SMC Pentax-A 400mm F5.6
The lens is a long, skinny, sturdy metal package with a handy tripod mount and built-in lens cap. The focus feel is excellent, but the throw is long, making a fast focus on moving objects more of a challenge, but allowing very precise focus on stationary subjects.


I have used this on Pentax film and APS-C bodies, and now the Sony A7R. I can't say I really saw what this lens could do until I mounted it on the full frame 36mp A7R body. It is sharp all the way across, but a little PP is needed to punch up the contrast.


The Photos below are full frame, and show best when viewed on Flickr, rather than the small version which displays here with the link.


The last photo of the small bird below was taken with the A400 plus the 1.4x-L converter of similar vintage for an effective 560mm. These two were made for each other, and they work very well either on cropped or full frame sensors. The detail on the small bird is amazing given the converter.


https://farm2.staticflickr.com/1658/25078552291_144dbe3a9e_b.jpg
https://farm2.staticflickr.com/1673/25145532086_19664f9aff_b.jpg
https://farm2.staticflickr.com/1673/24545065013_aa3d0786ee_b.jpg



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