I have noted an odd situation with my Kr body and different lenses, but I am not sure if it has been previously discussed in this forum or not.
This camera is my first Pentax, so I am slowly picking up a few lenses for it. I'm keeping relatively "cheap" on the glass right now, because I mainly see using this camera body for travel, since it is relatively small and lightweight, so I am not seeking out costly or heavy lenses for it right now. Also, I am still a bit shy about investing in this body, because, in spite of having really looked forward to owning it based upon the quite glowing reviews, and while it produces exceptional I.Q. overall, especially for its price, (even before it was being blow out at $299 at Frys) it has also shown itself to be a bit quirky and unreliable even with the relatively little use I have given it to date.
Anyway, that's just to say I know these lenses are not the state of the art that Pentax has to offer.
In both instances I am about to describe, the camera was set to save the images in both RAW DNG and highest JPEG quality. The SDHC memory card in the camera is a 16 gig, 200X, class 10 card. The shutter speed, aperture, and focus mode (AF or manual), focal position, flash use, shooting mode (I mainly use Av, but tried others including manual) have had no effect upon the issue.
The phenomenon I have noticed has to do with how long it takes for the image to appear on the rear LCD screen after the shutter closes. With both the kit lens (18-55mm AL DAL f3.5-5.6) and the 50-200 ED DA f4.5-5.6 lenses, after I take the shot, the screen goes black and there is an hour glass icon which sits on the screen for about 3-4 seconds before the image appears on the LCD.
However, when I use the other two lenses I currently own, a 28-90 f3.5-5.6 FA lens or a 35-70 f3.5-4.5 F w/macro (both used with the aperture ring in "A" position) the LCD image appears on the screen almost immediately after the shutter closes.
I have tried many different setting with each lens, and the results are consistent with each lens type.
I am wondering if this may have something to do with the camera firmware doing some kind of extra processing with the DA/DAL lenses after the image is taken, such as distortion correction or programmed sharpening, or other optical defect correction which it does not natively do with older non-"D" lenses? Or, perhaps the D lenses provide more data for the exif file to write?
Does anyone know if there is a setting to turn off these features, if that is what they are, so the image will appear equally as rapidly with the DA/DAL lenses as it is with my FA and F lenses? Or, alternatively, is there a way to improve the quality from the older lenses by engaging a feature set within the camera firmware which can improve the image quality of the older lenses?
Your input is appreciated. I hope my candid comments regarding the quirkiness I have experienced with this camera will not lead to hostile discussions as to if I am loyal to Pentax or not. I am trying to learn to make this camera body a worthwhile and productive tool in my camera arsenal along with other brands and I am as loyal to a camera brand as it is to me
.
Thanks,
Freezeframe