Originally posted by boodiespost yes, I am aware of that slide. I have slid it to the right most position where i can see the best. But as mentioned, my eyes lose focus. Is it me or the camera? It's driving me nuts!
Thanks
It's you, I'm afraid, or your glasses.
As the manual says (p-50) the viewfinder can be adjusted from -2.5 to +1.5 diopter.
I have glasses too and you need to spend some time to make sure you adjust the diopter slider until the autofocus frame is in focus, as well as the information panel at the bottom of the viewfinder. Do it while pointing the camera at a bright background. Since the AF frame and the information panel are the same distance away and on the same plane, any adjustment that brings the AF frame in focus should also bring the information panel into focus.
One scenario where I imagine this may not be the case however if you have glasses with lenses (eg bi-focals) that have different optical properties across the lens - eg where the top half has no magnification but the bottom half of the lens has strong magnification. In which case there is little that can be done to make the camera viewfinder fit the optical properties of your glasses lenses. You'll just have to learn to move your eyes around the viewfinder in a way that delivers a clear view.
If it is just a matter of needing an expanded diopter range, as the manual says (p-50) you can get the optional Pentax diopter correction lens adapter M, illustrated on p291, which will expand the diopter adjustment range to +5 to -3.
You might also try the magnifying eyepiece options discussed here:
https://www.pentaxforums.com/forums/camera-studio-accessories/46695-kps-1-3x-...-eyepiece.html
Hope this helps. Also if in doubt, you may need to bring the camera along to an optometrist and see if they can provide some suggestions about matching the viewfinder's properties up with your eyeglasses properties..