Originally posted by kh1234567890 As for the rest - exactly how do higher pixel count sensors make your lenses sharper ? The linear resolution increase between for example K-5 and K-3 sensors is only about 20%.
It is only 20% if you don't count the low pass filter. When I compare K3 shoots reduced to 16MP and 16MP shoots from K5, the K3 shoots are much sharper. I think both resolution and lack of low pass filter combined you are more at 30-40% more resolution and this is really visible.
Some lowest end lens start to struggle with the K3 like they did struggle with K5. Many of those still take some increase (I don't know maybe 10-15%) and produce visibly sharper image with K3.
Medium quality lenses (like tamron/sigma 17-50, sigma/pentax 17-70 or maybe even 18-135) are able to get the full burst of resolution gain at least in ideal condition. Condition I typically have when shooting landscapes. So before they wheren't mayber exactly as good as the best lenses (FA31, FA77 or DFA100 macro come to mind) but if you shoot thoses best lens with K5, and the medium quality lenses on K3, the medium quality lenses are visibly sharper.
I know that many think a lot of sharpness. They have high opinion on the best/newest sigma f/1.4 that is razor sharp at f/1.4 (or at least f/2 or f/2.8). I mean this is money thrown away if you don't pair them with a body that can really use this sharpness. This is K3, not a K5 or even K5-IIs. If you don't really care much of sharpness, you should not care... But you should not need expensive lenses neither excepted maybe from bokeh/rendering but surely not what MTF they give in tests.
Myself I don't care much as soon it is good enough. Meaning it can get good results at some usable apperture. But I know many want more than that, so K3 or equivalent is critical for them.
I still think the biggest argument to K3 is improved AF... but I instantly noticed my image where much more sharp, very visibly and that I had much more cropping capabilities. This is very conveniant as I do not fear to crop.
---------- Post added 10-05-14 at 01:16 PM ----------
Originally posted by kh1234567890 This is not exactly that. Maybe the software itself or so take only 1 minute (maybe in practice 2-3 minutes in many cases). This also add hassle in the processing flow, become much longer if you do HDR too and add complexity also in the shooting process: change to a longer lens so you can make the pano, go manual mode to keep shooting parameters constant, take a fake image before and after to quicky figure out it is a pano...
I mean I do not want to say that you should not do it, or that you should think it is boring too. Everybody is different. But I don't like the "you are doing it wrong" because I don't like stiching panoramas and I prefer when possible to use the possibility given by my gear. The process is much faster to crop 1 photo. It was a little risky with K5 as you could have only a 1200-1500 pixel high picture (1500 + maybe some little reframing) in the end and the low pass filter would make it effective of 800-1200 pixels. With the K3 you get 1500-2000 effective pixels (2000 + same eventual reframing) high without the low pass filter tax.
It happen to be enough while it was not with K5. You are much more comfortable with cropping with K3 than K5. You can see it otherwise: the K3 resolution increase is rougly the resolution you would get natively with K5 by doing a pano of 2 pictures (maybe a little less, but there still the low pass filter thing). But it come for free, without any stiching software, without deghosting, without needing to bother with the pano in the first place.
I still make a few panos, but this is when I want more angle of vision than what my lens provide (like I want 120 or 180°). Thoses are much more than 2-3 shoots and take quite some time to process. I really think that this should be handled directly in the camera like you have on smartphones or with Fuji. I least directly when shooting I can see the result, see it was a success or not and I can forget entirely the software in the post process. Much better.
Last edited by Nicolas06; 10-05-2014 at 04:26 AM.