Originally posted by gaweidert No filters on the lens. Top image was an old Pentax A* 28-80mm zoom and the bottom was with my D FA 150-450 zoom. I have more K5 images taken at ISO 6400 and very few on my K1. The shots that I posted have no corrections applied at all. I have some shots of a fire that I took with the K5 that come out quite nice,
When I take the two converted shots and look at them on my laptop using the Windows viewer, the difference is noticeable. I am not yet ready to discount me as the source of the problem. I have not tested the two cameras side by side using the same lens on the same subject matter at the same speeds etc. I am not sure it I even will.
But I have noticed that even at ISO 800 I seem to sometimes notice more noise on shots made with my K1 than I would expect. I am not sure of the cause of this and since I prefer to use ISO 100 it is not an issue with me. What prompted me to even reply to this thread in the first place were the personal attacks on the original poster that have now been thankfully deleted. I too have noticed this same thing. To me it is just something I noticed and deal with accordingly. In the olden days when I shot film, I always used film with an ASA rating of 100 or lower. So It would not bother me if the max ISO rating of a DSLR camera was only 3200.
My DSLR's are tools. Based upon my experience if I am in a situation that requires high ISO shooting, and I have my K5 or K5-IIs available I will use that instead. I would rather this than switch the K1 to crop mode. In fact I have had my K1 for over three months now and I have not shot a single photograph in the crop mode with it. It just give such delicious images when using it as a full frame camera.
Here is another image made with my K5-IIs shot at ISO 6400 with no noise reduction applied. This from 3 years ago and the same night as the top image I posted on the thread above this.
I'm going out for a hiking and I won't be available until monday.
That is a very nice image, but it is not good for testing purposes.
It is small, it is soft (probably shot wide open) and it is not K-1.
If you want to provide us a file for testing purposes it should be K-1 raw file properly focused and exposed.
Previous one shot with 150-450 looks good, focus is somewhere on 1/3 of a path, it is a little bit dark but exposure is pretty much correct for that lighting conditions, we just need that raw file here.
Btw, I don't have a lot of expirience in shooting with super telephoto lenses but when I'm using long lenses I'm avoiding very dark situations like this with my K-5 because I usually have huge amount of noise.
It will be nice for you to compare amount of noise K-1 vs K-5 @ISO6400 with 150-450 mounted and in similar lighting conditions.
You should also try similar test with K-5 and K-1 @ISO6400 but with some 35mm or 50mm lens mounted and stopped down (not wide open).
Good luck with your testing I hope you will figure it out what is going on with your K-1.