Originally posted by April.H I don't know what I'm doing wrong. Am I expecting too much? My images are sharp unless I'm over about 13 feet. Then, not so much. Is that typical for this lens? I'm putting a flickr link so you can see what I mean. At 100% crop there is a definite difference.
I'm shooting with a Kr, would a different camera make a difference? I'm hoping to upgrade to the K5 soonish .
Thanks for your help!
distance test - a set on Flickr It's not easy to see exactly what the camera has focused on. Can you try focusing on a flatter subject? At f/1.7, not all those wooden items in the shot will be in focus because the depth of field is so shallow. Try focusing on a distant row of buildings. That would be a better test, as long as the conditions are clear.
I have an FA50/1.7 that would not focus on distant subjects when I bought it, because (I assume) someone had opened it up to clean it, and on reassembly wrongly adjusted the focusing ring. It wouldn't turn far enough to achieve infinity. Easily fixed by someone who knows how to do it. Now it's fine. (Although prior to that, two professional lens repairers gave me a lot of BS about it not being faulty, oh the lens was not built for digital, and all the cr*p). Also, at f/1.7 accurate focus is critical. A lot of complaints about the softness of 50mm lenses wide open is related to slight misfocusing, I am convinced.
If there is a problem it is likely to be that your camera is slightly misfocusing (and a K5 enables you to adjust that for individual lenses), or the lens needs a bit of internal adjustment, or you are simply focusing on the wrong thing within the picture. All are possible. Don't test it on multipoint focus - who knows what the camera selected?