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Forum: Pentax K-1 03-10-2017, 08:05 AM  
Was I expecting too much?
Posted By peterh337
Replies: 56
Views: 5,446
That might be true for printing (and scaling to print at different sizes) but it isn't the case for a normal image resizing process in photoshop. They use something more clever.
Forum: Pentax K-1 03-10-2017, 04:28 AM  
Was I expecting too much?
Posted By peterh337
Replies: 56
Views: 5,446
The other thing about noise is that it results in much bigger jpegs.

Most non-pro people either shoot and keep only jpegs, or they use e.g. Lighroom to process the RAWs and then export into jpegs and discard the RAWs.

If you shoot an image at relatively high ISO (say 500 for the K3 or 2000 for the K1) and then export to jpeg at some fairly high quality (I use 95% in LR) you end up with say a 15MB jpeg. But if in LR you used the noise reduction slider (NR in Luminance) and moved it to about 25%, that will remove the noise (as seen at 1:1) with a minimal loss of sharpness and the jpeg will be say 5-10MB and it will look exactly the same for all practical purposes. Most of the excess size of the jpeg was compressing (unsuccessfully) the very small noise spots.

Many will say storage is cheap but when your photo collection gets to a few hundred GB then backups get "interesting". I rotate half a dozen 2TB USB drives via an off-site fire safe but there are issues with that too. Also viewing images is faster.

Interesting to hear the K5 had the same pixels as the K1. I don't recall noticing any special low light performance.
Forum: Pentax K-1 03-09-2017, 05:05 AM  
Was I expecting too much?
Posted By peterh337
Replies: 56
Views: 5,446
I don't understand the technical arguments but I had the K3 and the K5 before that.

Where the K3 would start to make a given amount of visible noise at say ISO 500 (as seen in Lightroom etc at 1:1) the K1 makes a similar noise at about ISO 2000. So the low light performance of the K1 is a lot better. IOW, one can shoot at higher ISOs, which is relevant to me because I shoot mostly in the TAV mode.
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