Daisy14'sDH
DIS Veteran
- Joined
- Oct 25, 2006
- Messages
- 1,559
I've given up on Photobucket and need a new photo site... 

So, do you keep it enabled? Hi or Lo
Also, an autofocus quesion - do you generally keep it on AF-A or do you switch often between AF-C or AF-S? I can never seem to remember where in the menus to find things. I have to keep carrying the manual!
Quick question for all you Pentaxians out there.
I have a K-7, when I use my Pentax 50-200 I get good AF throughout the spectrum. When I use my Tamron 18-200, the focus out at 200 is not as clear. I know that the K-7 has an AF adjustment. I am going to do this for just the Tamron lens. My question is....Has anyone ever done an AF adjustment? It does not look that difficult and if it goes bad I can re-set it but I am still curious if anyone has done it before.
Thanks.
It really is not difficult. It may take just a little time. There are charts and everything you can use. I prefer real use/life focusing. The first thing is to determine if it is front focusing or rear. The focus point is what you are adjusting. If your lens is just not sharp at a particular focal length then the AF Fine Adjustment is something you may not want to do. I try to find something outside (aka good light) that will allow me to determine where my camera is focusing when the aperture is wide open. Once you determine the focus point it can be adjusted by going to the (C)ustom menu. On the K5 it is number 26. You can turn it on and then it gives you a choice of Apply All or Apply One. Since this is only happening on one lens, choose Apply One. You then can adjust the focus point more to the front or rear by adjusting along the grid line. Since I use my real life focusing, I will do this several times to ensure I get the focus point where I want it. If everything gets messed up, just select 'Reset' and your back to the default. You can't hurt it. Check your manual, its all there under AF Fine Adjustment. After each adjustment, I go to the computer to view the image to ensure the change or make a further adjustment. Once your done, the camera will use your adjustment whenever that particular lens is mounted.
Its not real hard.