Originally posted by jeffkrol Thanks Jonas. Looks like the DS screen isn't perfect either. Though from f2.8, and throwing out the anomoly at f4 it's pretty good if you rise the baseline to 110. Canon's "baseline" is usually at 127 (they fudge the iso for tha ANSI standard, See Doug Kerrs wonderful papers.
Articles by Doug Kerr
Carpents, I take it back, Jonas's are uglier
Jonas re: the 2 added lines. Seems counter -intuitive. You would think that if the orig K10 screen was brighter than the DS screen, the curves should be reveersed.. anyways, flat even underexposure is much easier to deal with......
No the DS screen doesn't make the K10D exposure perfect... But I don't think anyone expect a modern Pentax to exposure perfect, not even when switching viewfinder screens. And yo are right; the DS screen works much better. The little dip at f/4 is puzzling: I have it with another lens as well (not included in the graph and even the Zenitar jumps up from a value of 95 at f/4 to a straight line around 114 between f/5.6 and f/11.
When I use the kit lens I have a positive compensation dialed in, no problem. And the curves are counter-intuitve for the DA lens, yes. But, it shouldn't be a big surprise to you: It is the same with the Takumar lens (and the Zenitar and... and I have double checked my numbers...).
I was for a long time a "97" man. Now I am more leaning towards "110". It is of little importance though as I always try to exposure to the right. The Canon vs ANSI thing is interesting in theory but quite unimportant from a practical point of view.
Jeff, when I bought the K10D I was blinded by the feature set and VPN and gave all this a lot of thoughts. I have a hard time believe it myself but I actually forgot about the exposure problems when I drove away to the camera store. Now I don't know. Spoiled by the 5D (in memory now) I just want a camera that works giving me no surprises. I don't know what to do really about this.
I guess I can give up and just buy DA lenses. Or I don't buy anything more and contemplate the situation. As I sold most of my gear I can afford jumping ship if needed. Any ideas? I would like to have "Live view" and a fast, good normal. Olympus?