My Pentax focusing screen adjustment shims finally arrived. I'd like to adjust it in as few attempts as possible. Is there a good resource that will quantify how much to adjust the shim?
I set a test up, with the focus point 1 foot away. The ruler is at about 45 degrees. http://www.flickr.com/photos/ellarsee/7158253973/in/set-72157629999980375 Autofocus seems to be pretty close to dead nuts (sorry Doug) on. http://www.flickr.com/photos/ellarsee/7158253421/in/set-72157629999980375 Manual focus seems to be slightly front focused: http://www.flickr.com/photos/ellarsee/7158255285/in/set-72157629999980375 http://www.flickr.com/photos/ellarsee/7343462032/in/set-72157629999980375 Enough that when it autofocuses, there is a distinct difference in the split prism. I'd love to be able to plug 12" distance, 3/64" front focus, and whatever the shim thickness is into a formula, and get the correct shim thickness on the first try. I suspect that what I'll have to do is measure the shim, change the shim to the next thinner, try the same setup, and then interpolate between the two to get the proper thickness. -- Larry Colen l...@red4est.com sent from i4est -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
