Eric Hensel: I've never understood why they don't fit the O-ring to the camera-side mount --sealing any lens attached, at one of it's most vulnerable spots.
Yes. I don't believe - I know. :) The mount of camera will have much more frictions and contacts with lens mount when you change one lens to another. Yes...If you use just 1-2 lenses, it won't be problem. IMO. But the camera is for different users. I have 10 lenses, for example. And I use all.
ogl: OVF 100% 0.8x - not lower36 MP sensor wider AF points than in APS-C cameras No AA filter It's enough for me
24 MP is old sensor, 36 MP is better in terms of DR and noise.
DFA ZOOMS are more important for future FF camera now, than fixed lenses. New fixed lenses will be on 2016-2017.
OVF 100% 0.8x - not lower36 MP sensor wider AF points than in APS-C cameras No AA filter It's enough for me
Who will replace? Service? It's useless idea. I think it's silicone ring. This ring is strongly stuck at the mount of lens. I see this at my DFA100 macro WR. It will be made in the same way at the mount of camera. How to replace it at home during warranty period? You invent the problem for manufacturer and for users. :)
Such ring will wear out much quicker than at lens mount.
Correct mistake with dimensions
What kind of hood?
Diameter 41 mm (1.61″)Length 71 mm (2.8″)Mistake in specs diameter 71 mm, length 41 mm
God, I want to live till I could take Pentax FF camera.
Is there any sense to make f1.8 for fish-eye?
Zvonimir Tosic: Pentax HD 70-200 has a new super-fast SDM motor, not DC.And as one user said, this new 70-200mm F2.8 lens may just out perform anything ever made in that classification of lenses by any manufacturer.It has 4 anomalous dispersion lenses + 2 ED lenses + 2 super ED lenses: for a total of 8 fancy ED style lenses, covered in all the latest and best coatings in the industry. Pentax pulled out all the stops on this one.
This lens is a game changer in this category.
DC is just type of motor. It could be RING motor.
ealvarez: Is this manual focus lens? $599? I can get 135mm f2L canon for about $600 used and Nikon 180 f2.8D even cheaper used.. I don't share much of the enthusiasm. Maybe I would if I was Sony E-mount shooter.
You can. But if you're Canon user. :)))
ogl: Good lenses, but too big...IMO.
Flange focal distance of FE bayonet is 18 mm, bayonet A is 44.5 mm. There is the physics.
Good lenses, but too big...IMO.
What is the main idea to do that?
ogl: 645z is 8500 USD.
But Pentax offers 18 lenses...Is it limited?
princewolf: I can't buy one, so doesn't interest me. Waiting for Sony or Fuji to come up with that fixed-lens medium-format mirror-less for under 5000 bucks. Might be a long wait :)
Buy 645D - real CCD. Only 4500 USD
How do you know it? Do you compare? No.