Some examples for my K-5 using only the internal interval timer (no mirror up using the 2-second delay):
First is the typical slap in this particular series. Notice the bump at the top of the brighter stars. Lens is an FA*200, f2.8. This image is a 100% crop of the center of the frame. The bump is not coma, as the bump is in the same place across the entire frame.
Next up the worse image of the same series. Stars don't look like this. Total lose here. (No, I did not kick the astro mount.)
Using an external interval timer, with the K-5 set to 2-second delay, the stars look like nice round stars. (I didn't get to make the error-free series of the above portion of sky.) An example:
Mirror up interval shooting is important to astrophotography.
---------- Post added 12-04-14 at 07:37 PM ----------
Originally posted by stevebrot I have to grin. I have been involved in several projects where a simple programming change was a prelude to disaster. Those four letters have such a huge implication. Even the simplest feature implementation carries the burden of potential unanticipated side-effect. Don't forget the effort for feasibility, POC, QA, documentation, and migration into the intended product space with no particular link to enhanced sales.
Still though...Ricoh did give us AA filter simulation bracketing and they were very fast in bring it on!
Steve
Sorry I forgot the smilies. But SMOP implies many smilies and loud guffaws for those who know, eh?
OK, some smilies, etc.