Originally posted by ElJamoquio ...in terms of resolution for a couple of not-defined lenses.
Each case has to be evaluated on it's own, I think.
Let's say you want a picture at 50mm equivalent at f/1.4? How much would that cost on the Nikon? The Pentax? What would resolution be on the Nikon? The Pentax?
85mm equivalent?
35mm equivalent? F/1.4? F/2.8?
Are you considering that you can crop the FF and have a system with a few less primes? Or even perhaps use zooms instead of primes?
Your 'insanity' comment fails to recognize that other people take other pictures with other priorities.
Next time quote me....
Quote: Just as paying for 400 going to a D600 on any other than personal taste is pretty much insanity.
I took personal taste into account. What else do you think might be important? or are you just going to try and get into it again? 95% of the Pentax world doesn't want or need FF. Most of us at looking for ways to avoid FF. Get used to it. It's been that way forever.
Quote: Are you considering that you can crop the FF and have a system with a few less primes? Or even perhaps use zooms instead of primes?
Yes..
Cropping any FF system doesn't give you 24 MP or as much resolution as pre-cropping with a 24 MP APS-c system. The D800 did catch up with 16 MP APS-c systems, but, that's old news.
Quote: Let's say you want a picture at 50mm equivalent at f/1.4? How much would that cost on the Nikon? The Pentax? What would resolution be on the Nikon? The Pentax?
That's not the strength of APS-c. The strength of APS-c is when I buy my A400 5.6 lens for $450 used, and the equivalent FF system at 600mm, is over $12,000. That right there is why even after you go FF, you'll still want to carry a 24 MP APS-c in the same mount. When using my 400, I still usually crop half the image. How would cropping 3/4s of the image help me at all? It's at the long focal lengths APS-c really makes sense. In the middle ranges it's a saw off you can argue forever. Wide angle, I myself and I suspect many others would love to use a 31 Ltd on an FF camera. But it's not essential. We can still get an acceptable shot with the 21 Ltd.
I'm not saying there aren't advantages to FF, advantages that will become more apparent as pixel densities increase, APS-c sensors will become seriously diffraction limited before FF will... I'm talking about a snapshot in time, when 24 MP APS-c cameras exist, and get almost the same resolution as 24 MP FF cameras do.
I've actually never said there weren't reasons to go FF. A lot of FF advocates like to put words into my mouth. There are lot's of choices based on personal preferences that make FF attractive.