Originally posted by starbase218 I think this is a letdown. If not for us, then for Pentax itself. The K-3 is a great professional-level fast APS-C camera. But more than that, it was perceived by some to be unique in its class. The D7100 and 70D came close, but the K-3 has a bigger buffer and build quality and can be considered a level above those competing cameras. The problem, however, was that Pentax did not release any interesting lenses to capitalize on that achievement. Worse still, Tamron and Sigma seem to be dropping support for the K-mount. A great camera is a good start, but it's the system as a whole that matters most.
I personally have the opposite problem on the pentax system, too many great lenses and too little cash on my bank account. I don't understand why people complain (or worry about the future with lens manufacturer's "dropping" the support of the K-mount) The Fa/ Da limited and Da* lenses are top notch. We shouldn't equate older design with outdated-ness. If you want faster primes you still have great Sigma lenses (20,28 f1.8, 30 f1.4, 85mm f1.4 etc) Pentax only need a few more lenses in its lineup like an affordable long telephoto zoom which is being addressed in the roadmap.
The Pentax FA 43mm f1.9 was shipped in Leica mount for god sake, that's how great of a lens it is. The Fa limited are in the Leica/Zeiss category and lenses don't get any better than that. And the Da* zooms and primes are great. If you're one of those that worry about bumping your MTF values by 150 every year to feel "competitive" then in my opinion photography may not be for you.
If you want more "choice" then go with Canon,the company hasn't been profitable for a long time, i wonder why?!
Canon EF-S 10-22mm f/3.5-4.5 USM
Canon EF 16-35mm f/2.8L II USM
Canon EF 16-35mm f/2.8L USM
Canon EF 17-40mm f/4L USM
Canon EF 20-35mm f/3.5-4.5 USM
Canon standard zoom lenses
Canon EF-S 15-85mm f/3.5-5.6 IS USM
Canon EF-S 17-55mm f/2.8 IS USM
Canon EF-S 17-85mm f/4-5.6 IS USM
Canon EF-S 18-55mm f/3.5-5.6 II
Canon EF-S 18-55mm f/3.5-5.6 USM
Canon EF-S 18-55mm f/3.5-5.6 IS
Canon EF-S 18-135mm f/3.5-5.6 IS
Canon EF-S 18-200mm f/3.5-5.6 IS
Canon EF 24-70mm f/2.8L USM
Canon EF 24-85mm f/3.5-4.5 USM
Canon EF 24-105mm f4L IS USM
Canon EF 28-80mm f3.5-5.6 V USM
Canon EF 28-90mm f4-5.6 II
Canon EF 28-90mm f4-5.6 II USM
Canon EF 28-90mm f4-5.6 III
Canon EF 35-80mm f/4-5.6 III
Canon EF 28-105mm f4-5.6
Canon EF 28-105mm f4-5.6 USM
Canon EF 28-105mm f3.5-4.5 II USM
Canon EF 28-135mm f3.5-5.6 IS USM
Canon EF 28-200mm f3.5-5.6 USM
Canon EF 28-300mm f3.5-5.6L IS USM
Canon telephoto zoom lenses
Canon EF 55-200mm f/4.5-5.6 II USM
Canon EF-S 55-250mm f/4-5.6 IS
Canon EF 70-200mm f/4L USM
Canon EF 70-200mm f/4L IS USM
Canon EF 70-200mm f/2.8L USM
Canon EF 70-200mm f/2.8L IS USM
Canon EF 70-200mm f/2.8L IS II USM
Canon EF 70-300mm f/4-5.6 IS USM
Canon EF 70-300mm f/4.5-5.6 DO IS USM
Canon EF 75-300 f/4-5.6 III
Canon EF 75-300 f/4-5.6 III USM
Canon EF 90-300mm f/4.5-5.6
Canon EF 90-300mm f/4.5-5.6 USM
Canon EF 100-300mm f/4.5-5.6 USM
Canon EF 100-400mm f/4.5-5.6L IS USM
Canon wide-angle prime lenses
Canon EF 14mm f/2.8L USM
Canon EF 14mm f/2.8L II USM
Canon EF 15mm f/2.8 Fisheye
Canon EF 20mm f/2.8 USM
Canon EF 24mm f/1.4L USM
Canon EF 24mm f/1.4L II USM
Canon EF 24 mm f/2.8
Canon EF 28mm f/1.8 USM
Canon EF 28mm f/2.8
Canon EF 35mm f/2.0
Canon EF 35 mm f/1.4L USM
Canon standard prime lenses
Canon EF 50mm f/1.8 II
Canon EF 50mm f/1.4 USM
Canon EF 50mm f/1.2L USM
Canon telephoto prime lenses
Canon EF 85 mm f/1.8 USM
Canon EF 85mm f/1.2L II USM
Canon EF 100 mm f/2.0 USM
Canon EF 135 mm f/2.8 SF
Canon EF 135mm f/2.0L USM
Canon EF 200mm f2L IS USM
Canon EF 200mm f/2.8L II USM
Canon EF 300mm f/4L IS USM
Canon EF 300mm f/2.8L IS USM
Canon EF 400 mm f/5.6L USM
Canon EF 400mm f/4.0 DO IS USM
Canon EF 400mm f/2.8L IS USM
Canon EF 500mm f/4L IS USM
Canon EF 600mm f/4.0L IS USM
Canon EF 800mm f5.6L IS USM
Canon EF 1200mm f/5.6L USM
Canon EF-S lenses
Canon EF-S 10-22mm f/3.5-4.5 USM
Canon EF-S 15-85mm f/3.5-5.6 IS USM
Canon EF-S 17-55mm f/2.8 IS USM
Canon EF-S 17-85mm f/4-5.6 IS USM
Canon EF-S 18-55mm f/3.5-5.6 II
Canon EF-S 18-55mm f/3.5-5.6 USM
Canon EF-S 18-55mm f/3.5-5.6 IS
Canon EF-S 18-135mm f/3.5-5.6 IS
Canon EF-S 18-200mm f/3.5-5.6 IS
Canon EF-S 55-250mm f/4-5.6 IS
Canon EF-S 60mm f2.8 Macro USM
Canon macro, TS and TC lenses
Canon EF-S 60mm f2.8 Macro USM
Canon EF 100mm f/2.8 Macro USM
Canon EF 100mm f/2.8L Macro IS USM
Canon EF 180 mm f/3.5L Macro USM
Canon EF 50mm f/2.5 Macro
Canon MP-E65 f/2.8 1-5 x Macro
Canon TS-E 17 mm f/4L
Canon TS-E 24 mm f/3.5L
Canon TS-E 24 mm f/3.5L II
Canon TS-E 45 mm f/2.8
Canon TS-E 90 mm f/2.8
Canon Extender EF 1.4x II
Canon Extender EF 2X II