Originally posted by ankurbbhatt 1) What focal length should I feed into the K-5, when I mount my K mount manual 35-200 Sun made lens?
I generally handle this much the same way kkoether and Canada_Rockies are advising. That said, Pentax/Ricoh
offer the following: "If you are using a zoom lens, choose a focal length close to the midpoint of the zoom range of the camera."
Originally posted by kkoether I would get much sharper pictures turning off SR and keeping the shutter speed 1/500 or higher.
Originally posted by Canada_Rockies On 35mm the rule of thumb was 1/shutter speed as a minimum: 1/200 at the long end of your zoom, for example. I find that 1/300 is better because of the greater magnification on the APS-C sensor.
I prefer this way, because it avoids the possibility that the SR is working against you, but if I am really set on using SR, I reset the actual focal length I'm using in the SR every time I zoom in or out. Of course, I typically shoot zooms more like I do primes anyway, so I don't usually need to change it much.