Cunningly disguised!

More images and shots of the unholy union here.

http://stevenlins.blogspot.com/2008/05/5d-pentax-fa-31-le.html

And then some enthusiasts opt for a 645d. Fabulous camera but... Overkill perhaps, for most of us. Going to FF is more logical as you can share many lenses across the systems.

Here's the FA31 on a full frame canon

http://lh5.ggpht.com/stevenlins/SDrhLy5LMLI/AAAAAAAAFcI/CqG5Ym6Pms4/s800/IMG_949...

I think to get that 'look' on Apsc you'd need a 20mm f1.0 lens, which hopefully puts into context any concerns about FF being too bulky.

I think Pentax should make small size the USP, tailoring it to the FA ltds. And make it reasonably affordable. But if you can afford the full set of FA ltds you can probably afford to splash out on a digital body that truly does them justice.

If keeping the camera small means dispensing with in body SR, so be it. Excellent ISO performance is key. 16 MP would be plenty.

If you're talking about barrel distortion, the 21mm has LOTS for a lens of such a moderately wide focal length. Of course it's easily corrected. The 15 is much straighter despite being so much wider.

Yep you can, I have my k7 set up that way.

Think it was in the custom settings.

I do crop, but tend to go for a standard aspect ratio even if it means a slight compromise. In your cropped shot I would crop more sky above the sign, and crop the lower part of the building to just below the blue line.

I'm afraid the sort of feature you are talking about was introduced after the k200d... Which is quite an old camera really now. I didn't miss it as I was used to shooting information in the view finder. Or on the top LCD.My k7 has it, but I never use it

On MTF only, the 12-24 beats the 15mm. This is well documented. But as I said above, the 15 does have special qualities that don't necessarily show up on MTF charts. Flare resistance and contrast, and I forgot to mention colour. It is a lovely lens and I wouldn't be without mine now. But I've always enjoyed using primes. And the 15mm was always luring me since I first read about it, I was fortunate recently to get an unexpected insurance payout which allowed me to buy this little gem.

Quite ironic when you read the Youtube comments:

Pretty sure he's using a K200D with a reversed 28mm manual prime