Random shot at 250 mm during a visit to a nursing home......no doubt the K5 could beat this, in particular for speed...I was far enough away she never knew I shot it.....250mm..... with the Tamron 18-250. It is the range that makes it versatile, and 135mm would never do it for me. I have the DA*50-135, and in no way would ever consider for a "walkabout" lens for my needs....just too short. You always hear get as close as you can, then two steps closer......250mm gets you the two steps. Just my thoughts, maybe you shoot in a different style, I know some are only prime shooters...I understand that!
Regards!
1/10 f6.3 250mm ISO 1600 K20D
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