Real or imagined? Hardware, software, firmware related? Can we at minimum identify just what was being suggested by the OP who drew attention to it? I read the whole thread at dpreview and was still uncertain.
Mirror Slap as identified by the original poster on the K-X would seem pretty clearly to indicate a hardware anomaly that affects images. I was trying to understand if the original concern had something to do with the design of the mirror carriage, bad damping, proximity to the sensor, poor sensor mounting, etc. But the discussion on this matter as it affects the K-X has proceeded all over the map to include firmware issues and more. Mirror lockup has always been a feature used by photographers to isolate the mirror and prevent it from mechanically affecting the shot with vibration, slap, whatever you want to call it. So just what is being described in the original complaint that is uniquely bad on the K-X?
I'm new enough to photography (to digital anyway) that I'm learning new parlance every day, but is "mirror slap" understood to be more or less a feature of all DSLR cameras? It's there and some models deal with it 99 percent effectively and some do not? Does it follow that somebody got on a forum and suggested that the K-X is a poor performer in this category? From another thread at dpreview.com......
Quote: Hello. I am shooting with a D70s and a Nikkor 70-300mm with cable release. Tripod is an inexpensive Quantaray (~2lbs). At telephoto focal lenghts I am noticing a great deal of what I believe to be mirror slap. Will a more sturdy tripod fix this problem completely? Any brand/model recommendations? Is there a way to use the mirror lock-up function listed in the menu system (and if so will this help)? Thanks for all your help!!!
....and response
Quote: With better tripod, it will be a little bit better than the smaller and less turdy tripods but not by much. The mirror slaps send the vibration throughout the camera and no matter how sturdy your tripod is, some degrees of blurriness is unavoidable. MLU is probably one of the weakest link on the D70/D70s.
Less turdy tripods? Any amount of turdiness is going to blur an image. I mean, C'mon!
The story about mirror slap on the K-X is starting to sound like it may have begun with an idiot, full of sound and fury, signifying nothing.