Using an M42 or screw mount lens on my Pentax K100D is a fairly same issue as using an SMC-Pentax M lens that i covered in previous post. Metering works just fine like always (one of the primary reason why I lean toward K100D).
But when I “booted up” the K100D with the Vivitar 235, instead of the usual “enter the focal length” screen that greets you when you mount an SMC M lens, it went directly to show the info screen that shows that SR is off. I also found out, that I can only use spot metering. When trying to shoot some picture, It hit me that focus confirmation also wasn’t working. it’s just like the body failed to detect that a lens is attached.
Why? (more…)
Filed under: K100D, M42, Pentax, Photography | Tags: K100D, M42, manual focus, vivitar
Here are some pics of Vivitar 135mm F2.8 that recently fall into my custody 
My first M42 lens.
Some sample that I took around the house
Update @ 26-04-2008
I finally got the chance to play with the lens when I visited the local zoo. Here are some pics that I took with the lens paired up with my trusty K100D (more…)
