Hello!
I own two Pentacon Six TLs and a Kiev 60 myself, as well as various lenses ranging from 45mm to 250mm.
So: the Kiev is a sturdy workhorse – when it works, it works (and if it doesn’t, you’ve got a lemon, which does happen occasionally); problems with image overlap are usually down to incorrect adjustment of the film advance. The K60 is bulkier and heavier than the P6.
The Pentacon Six TL is therefore lighter and more elegant ;-)
Provided a previous owner hasn’t ruined the transport gears by snapping the lever back, there’s a trick that works 100% of the time to avoid overlaps:
http://www.baierfoto.de/Transport.html – I’ve probably performed around 100 to 150 exposures on my two P6TLs, and haven’t had a single instance of overlap using this technique.
The most serious drawback of the P6TL: Viewfinder & focusing screen: the original focusing screen is dim, dark and quite vignetted in the corners – but the very bright Exakta 66/Mod.1 focusing screens (available with and without a microprism spot) fit as replacements and are very easy to swap out (available for around 10–15 euros at Foto Walser, often via eBay); Ex.66/2 or 3 and Rollei screens also fit with a little adaptation; nevertheless, the P6 viewfinder still only shows 80% of what ends up in the picture... The original light-well viewfinder is also a bit of a joke – it looks stylish, but it doesn’t shield the focusing screen from ambient light – the ideal option is the Exakta 66 light-well viewfinder, which also fits; it even has interchangeable lenses for the viewfinder magnifier to correct for visual impairments (available – though unfortunately not very often – on eBay); Second-best solution: the fixed magnifying viewfinder with dioptre adjustment (just a bit bulkier to carry around, otherwise top-notch).
As for the lenses – here is my experience with my own:
45mm Mir: the worst lens I have ever used – out of focus at the edges, useless (though there are also satisfied users; the chances of getting a working one are probably about 50:50).
45mm Hartblei PCS: a shift lens, based on the 45mm Mir, but with quality control having ironed out the flaws – quite usable as far as that goes, but it distorts like mad; if making full use of the 6x6 square, I’d only shift by about 6–8 mm at most.
50mm Flektogon MC: a superb wide-angle lens, excellent sharpness, but unfortunately heavy, and requires expensive 86 or 95mm filters (though that’s the case with almost all MF wide-angles...).
65mm Mir: a good, lightweight wide-angle lens, nice for group shots.
80mm Volna (older version of the Arsat): when stopped down slightly, very sharp and high-contrast, but with an unpleasant, jagged bokeh, which is very distracting.
80mm Biometar (Zebra): slightly less contrasty than the Volna, but with acceptable bokeh.
120mm Biometar (Zebra): the same applies here as for the 80mm BM.
180mm Sonnar: This lens alone makes buying a P6 or K60 worthwhile – arguably one of the best MF portrait lenses of all time; LEGENDARY bokeh, soft and flowing, placing the total focus on the in-focus subject – you have to see it to believe it!!! Yet it offers good sharpness even at wide apertures and has good resolution!
250mm telephoto: quite compact for an MF telephoto; sharp, but not very nice bokeh – to be honest, I haven’t used it all that often (I’m more of a wide-angle user).
The adapter for the P6 to Mamiya that Mirko mentioned is still available; if you like, I can give you some sources! By the way, I’ve just picked up a Mamiya 645 Super on eBay myself, on which I wanted to continue using my lenses – reason: I didn’t want to always have to lug two bodies around when hiking, and the 645 Super has interchangeable magazines; on eBay it doesn’t cost any more than a new modified Kiev 88 from Arax or KievCamera (which I still consider less reliable), and besides, the Mamiya system has 35mm wide-angle and central-shutter lenses...
Let’s see how I get on with the 645; maybe I’ll sell one of my P6TLs – but I’ll definitely be keeping the lenses!
Roman