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Forum: Pentax K-3 & K-3 II
01-06-2019, 06:41 AM
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Just for completeness, this is my K3 at iso 1600 with the DA 55-300. Obviously this is a lot better light than in any of the OP's images, but it does say that iso 1600 can be used in the right situations on a K3 without too much of a penalty.
 Monkey by Vincent1825, on Flickr
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Forum: Pentax K-3 & K-3 II
01-06-2019, 04:38 AM
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I guess I would echo what the others said. You are shooting in really low light settings. Your shot of the dog was shot at 1/15 second and iso 1600 and for some reason under exposed by 1.3 EV. That is the sort of situation that will stress most camera sensors the most. The landscape was 1/4 second and iso 3200 and clearly it was stressing your hand holding ability as there is quite a bit of camera shake there. The bottles and glasses look shaky too, although the shutter speed there was 1/50 second.
Honestly, I'm not seeing tons of noise, but there are a number of things you could do to get better photos. One is work on hand holding technique. Your shake reduction will help a stop or two, but bracing yourself a bit and steadying things before you take a photo will make a difference. For night scapes, your best bet is just simply to get a tripod and use it with the 2 second self timer to allow for longer exposures. I have hand held night shots and clearly it can be done, but your best results will be with a tripod, lower iso and stopping down your aperture more to allow for more depth of field. The last thing for indoor shots is either a bit faster lens or an external flash unit. Faster lenses can certainly allow you to open your aperture more and allow more light in, that said, they make focus a bit more difficult as the depth of field is more narrow. External flashes make all your lenses "faster" in a sense, but they also make your camera more bulky. Oh, and try not to under expose. Any time that you under expose and have to bump your image's exposure at all, you will see much more noise than you would otherwise.
Regardless, good luck with your shooting endeavors and post more photos here. There are lots of folks smarter than me who will give you good advice and can help you improve your image quality and get more satisfaction from your K3.
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