Originally posted by Jane Hello, I have been a Pentax Spotmatic and K1000 user for years or until film and processing became difficult to manage. I set photography a side during the family years until my husband and now adult son took up autocross. They bought me a Kodak EZshare to bridge the gap and I really got involved in shooting their events. Now they have given me my first DSLR, a K30 with kit lenses. I generally like the camera and have become familiar with it. I have just shot my first two weekends with it and have discovered that the Kodak takes better pictures. My 50-200 mm kit lens does not seem to be doing a very good job at 200mm in terms of sharpness. I am using shutter speed priority set at 1/125 to 1/160 of a second which is what I shot the Kodak at. I am not sure if changing to a preferred aperture setting would help much or just go for a better lens. I am looking at the WR version and shopping for a 300mm zoom that is affordable, sharp at full zoom (200-300mm) with faster AF but light weight (a WR version of the 55-300mm would save me a little $$. Any hint that one is in the works?). I saw that the forum ratings are better for the Sigma 70-300 than the Pentax 55-300mm Zooms. I am shooting again in two weeks and also have to combat sensor dust already and have only removed the lens twice. Any advice on any of this?
Congrats on the camera and welcome to the forum! I am new to Pentax myself but I mainly shoot motorsports. I have owned the Sigma and have the Pentax and can assure you the 55-300 is a better lens in every way. It is also much smaller and lighter.
I would make sure that your 50-200 is focusing properly. Even if that isn't the best lens in the Pentax line, it should put that Kodak to shame. Make sure the set the AF point to the center. Your shutter speeds are about right for panning depending on light conditions and distance. Obviously, the lower you can go, the better. Lower apertures can have a dramatic affect on your photos... not good or bad, just different effects. Stopping down the 50-200 should help with the sharpness and you still have a lot of ISO headroom with the K-30. I have never have autofocus issues shooting motorsport. The great thing is if you miss a shot, wait a minute or so.
Of course that's a little different with autoX but once you find the shot you are going for, you should be able to nail it over and over.
Minor dust will come and go. The in-camera dust removal will take care of the vast majority of it.