Originally posted by kadajawi The thread title says if the K-5 II is a poor man's Leica, and that's like saying if a Mercedes C class is a poor man's Ferrari or Lotus. Not really, no it isn't. A DSLR is nothing like a rangefinder. It doesn't work like one, it doesn't feel like one. That doesn't mean that DSLRs are bad, or not as good as rangefinders, but they are different. DSLRs are more in your face, bigger, louder, more attention grabbing (though Pentax ones are on the less attention grabbing side of things, but nowhere near say a Leica).
As a long-time user of both Leica Ms and Pentax cameras, I don't agree with these statements. in terms of size the K-5 and its variants are very close in size to the Leica M9.
Compare camera dimensions side by side
Earlier in this thread I posted a description of a test I made comparing Leica reflex lenses to Pentax M lenses. Are the current Leica M lenses better that the DA Limited ones? Probably, but given the cost differences between the two brands of lenses and the ability of current software to overcome lens aberrations and softness, is the end difference that great? I doubt it.
I do a lot of street photography. I find the K-5 handles just as well as a Leica M. My main street lenses are the DA 21 and the DA 40 Limited lenses, with the occasional addition of the DA 15 and DA 70 Limiteds. The first two are basically equivalent to 35 mm and 50 mm on the Leica M. I like the autofocus capability of the K-5; it beats the necessity to manually focus the Leica M when you are taking a quick street photo. Zone focusing can, of course, be used with both cameras. The Leica M is very quiet, but the K-5 is sufficiently quiet as to be unnoticeable in street conditions.
I also do a lot of nightclub photography of flamenco dancers. The capabilities of a rangefinder camera for focusing far outweigh the those of a split-image rangefinder screen in a DSLR when in a dark nightclub with fast moving dancers. With the latter you need to find some straight edge to split and bring together to get the focus right, whereas the Leica M's rangefinder will enable quick focusing on a dancer's frizzy hair. A microprism in a DSLR is better than a split image, but still no match for the Leica M. I use autofocus with the K-5 when photographing dancers with good but not great results, not because of the camera, but because its autofocus capabilities in dim light are not the greatest. In fact, I purchased a K-5 II when the price dropped drastically because of its better autofocus capabilities. I have not yet had a chance to test it in a nightclub, but in dim light (sunset on the street) it does autofocus better than the K-5. Here I would wish that the Pentax DSLRs had the focus capability of some of their competitors. But in terms of overall handling, I would consider the K-5 and Leica M to be comparable.
There was an article back in the 70s in one of the photo magazines comparing the handling of a rangefinder camera with that of an SLR. The main difference was that with a rangefinder you could see outside the floating frame in the viewfinder which defined what the lens was taking, whereas with an SLR you had a black frame around the image. This is true, and it applies today to the Leica M compared to the K-5. But, again, I don't find that significant in my use of the two cameras. Where this difference really was significant was with the Nikon SP, Nikon's last rangefinder camera, back in the late 50's and early 60's. The Nikon SP had a 1:1 viewfinder; what you saw was life size. With the SP up to your right eye and your left eye open, you could see everything around the image the camera saw and anticipate upcoming action. It was quite amazing. I am left-eye dominant and wear glasses. I tried contact lenses (the hard ones; soft ones weren't available then) so that I could do this right-eye viewing. Unfortunately my eyes couldn't adapt to the hard contact lenses in the long run and I had to go back to left-eye viewing. With the Leica Ms, however, you can't do this as its viewfinder is not 1:1.