Pentaxophile, Stuey, Matt and Chunky - thanks for taking the time to comment, appreciated !

First one of these White Tigers' shots that I've processed (this was the one I liked best) !

As always sorry about the Copyright stuff but you know how it goes.

[IMG]http://frogfish.smugmug.com/Animals/Tiger-Tiger/i-Cq9Wn63/0/XL/White-Tigersweb-XL.jpg[/IMG]

Hi Rich, I haven't had any experience with those wonderful Leica R lenses (wish I had !) but I have had three Contax Zeiss lenses (28, 85 & 35-70 macro) adapted for use on my K5s. I also have the 15, 43 and 77 Limiteds.

I find time for all three of the Zeiss lenses as they have different uses compared to the Limiteds. Your Leica trio will give you better use and, in my opinion, FoV (35mm equivalents of 52, 75 & 135 instead of 70, 100 and 180 ) on APS-C than on 4/3. IMO the only one of your three I'd consider selling is the 90 and buying the 77 (not the 70 - that would be a poor substitute for the 90/2) which is a superb lens and now gets more use than my 85/1.4 unless I particularly want the f1.4.

Selling the 90 should net you more than enough funds for the other two conversions (Leitax perhaps is the best - google them) the 31 and the 77 and give you a wonderful line-up to cover almost every eventuality.

The way that has always worked for me is to delete absolutely everything, folders and all, from the card and then put the unzipped BIN file on the card so it is the only thing on the card. Put the card in the camera and close the compartment door, now hold down the MENU button and switch on the camera .. it should ask you if you wish to update and away you go.

ha ha - good shot, made me smile.

That's a complicated question and you don't give enough detailed criteria for people to recommend just one lens, so most will just give you their favourite fl or lens ! Even though you mention a 50mm prime .. is that the only fl you'll consider ?

Are you talking about head shots (100 - 135), upper body (70-90) or full body (50) ? Studio or outdoors (in which case those FLs can be more flexible) ? MF or AF lenses ? Budget ?

Anyway, some ideas (you don't always need the sharpest lens(es) !) :-

50mm : one of Pentax's 50/1.7 (-), FA 50/1.4 ($), Cosina 55/1.2 ($$), 43 Ltd ($$), Helios 44 - 58/2 (-), 55 Ltd ($$$), SMC Tak 50/1.4($).

70-90mm : Sigma 70/1.4 ($$), 77 Ltd ($$$), Zeiss 85/1.4 ($$$), Samyang 85/1.4 ($), Sigma 85/1.4 ($$$), Jupiter 9 - 85/2 ($), Pentax 85/2 soft ($$) or you could also use the Tamron 90/2.8 macro ($, great bokeh).

100-135mm : Super Tak 105/2.8 (-), SMC Tak 135/3.5 (-), and macro lenses such as any of the Pentax 100/2.8s ($ - $$) or Sigma 105/2.8 ($$).

To say nothing of established portrait zoom lenses such as the Tamron 28-75/2.8 ($$) or Pentax 50-135/2.8 ($$$) ! ...... and a plethora of other excellent lenses !!

1. FA 43/1.9 Ltd (silver)
2. FA 77/1.8 Ltd (silver)
3. DA 15 Ltd
4. DA*300 (this is only 4th because I don't use it as much as those above).
5. DA*60-250 (don't have this one but have tested it).

Yes but forum members and camera club members are hardly representative of the typical DSLR owner are they. The vast majority of DSLR owners never go near a forum or club.

Sorry I din't want to appear as if I was denigrating APS-C users and I know there are many pros/serious users amongst us. I should have phrased that better and said proportionately.

However fact is most people that splash out on a FF camera do so because they are very serious about photography whereas many people buy an APS-C because of the quality of the camera / its reputation / size / because they want to step up from P&S or Bridge / for whatever other reason, and that is reflected in the lenses they use which is often nothing beyond kit lenses (and again I am not having a pop at a newbie who has just bought his first DSLR or someone who maybe can not afford to spend a lot of money on lenses and the people on here are not your average DSLR user).

People who buy FF cameras will frequently spend a lot of money on the best lenses and on learning techniques to extract the best possible results from their ability and the camera/lens combination. This is why a disproportionate (in relation to sales) number of pro/serious amateur shooters use them.

It still comes down to two facts though which would indicate why we always see far more Canon / Nikon shots in competitions and print (magazine bias aside) :-

a) market share - when Pentax has such a tiny share of the market this would naturally translate to less entries from Pentaxians (your 100 shots had 2 from Pentax - which is just about right as far as market share of DSLRs is concerned).
b) most Pros / Serious Amateurs use FF Canon/nikon cameras.

Surprised there were no Medium Format / 4 x 5 / 6 x 7 shots though, surely those cameras out perform all of those you mentioned above, in this category.