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Review statistics for HSEXPLN
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Latest Review Posted	Tamron (adaptamatic/fixed mount) 300mm F5.6 This big “beast” has impressive build quality and a very solid feel. Mine came with a FD mount. The built-in tripod mount is great and necessary for the lens weighs 830 grams (without the caps). The built-in hood is also a great plus but tends to slide back when shooting upwards (maybe the hood of this copy is worn-out). IQ: f/11, f/13, f/16: Excellent sharpness and contrast. f/22 still very good! f/9: Sharpness very good, contrast good f/8: Sharpness good, contrast low f/5.6: Sharpness low, contrast very low Mild chromatic aberration throughout—very good for a lens from early 70's. Sample shot - f/8, shot in RAW, contrast/sharpness adjusted in post-processing: https://www.pentaxforums.com/forums/members/57487-hsexpln/albums/7932-tamron-adapt-matic-300mm-f5-6-tests-photos/picture70840.jpg Quick test - f5.6-f9: https://www.pentaxforums.com/forums/members/57487-hsexpln/albums/7932-tamron-adapt-matic-300mm-f5-6-tests-photos/picture70839.jpg Quick test - f/11-f/22: https://www.pentaxforums.com/forums/members/57487-hsexpln/albums/7932-tamron-adapt-matic-300mm-f5-6-tests-photos/picture70838.jpg And here's the lens: https://www.pentaxforums.com/forums/members/57487-hsexpln/albums/7631-my-gear/picture70844.jpg

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