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Forum: Pentax Medium Format
05-03-2011, 05:15 PM
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Forum: Pentax Medium Format
04-09-2011, 04:44 PM
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Thanks Harklee, great photos and review, very appreciated.
I would be interested in what you think (if you have tested it) what has been a maximum acceptable exposure time for iso100 or other iso's
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Forum: Pentax Medium Format
10-21-2010, 07:44 PM
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This is an effect I have seen on a number of sample photos shown from the 645D particularly landscape/nature/outdoor photos, and I am seeing the same thing in the full sized sample provided on this thread.
Has anyone else noticed the same. Maybe it’s more a software issue but for me personally I see this a lot in the sample photos I have seen so far when I zoom in 100% or more.
Mark
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Forum: Pentax Medium Format
01-16-2010, 02:20 PM
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Probably when you needed to clean the sensor. Certainly this would make cleaning of the sensor much easier than for example the Leica S2.
Maybe because the back still 'clips' onto the rear of the camera body there won't be any displacement changes over time.
From my reading of other forums, the tolerances of the whole camera system are very small and errors in alignment and displacements in camera system components away from factory calibrations (a back that isn't perfectly parallel to the camera body, small displacements in the mounting of the camera back, a viewfinder screen not parallel, etc..) particularly when your dealing with a 40Megapixel sensor, can have an impact on accurate focussing and maybe even increase the frequency and strength of chromatic aberration effects.
It is dissapointing though that it removes the IQ and tilt/shift benefits of view camera systems. I hope maybe they can release a tilt/shift lens in the future if the back does remain fixed to the camera body.
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Forum: Pentax Medium Format
01-15-2010, 11:32 PM
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What alarms me from prototype photos
PENTAX 645 DIGITAL()
is that the digital back seems to be mounted to the camera body via some hinge mechanism. This concerns me in regards to tolerances being maintained over time with wear.
I'm a bit surprised they instead haven't just allowed the back to be attached onto the rear of the camera body manually and removed again by the user like other medium format systems, allowing the back to be used on view cameras (Alpa, Rm3D etc..).
I'm assuming this wouldn't increase the cost of production.
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Forum: Pentax Medium Format
01-07-2010, 02:24 AM
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Guys,
Can I ask if anyone has any specific links saying the digital sensor will be 39MP and not say 30MP.
I have seen prototype pictures showing the back sensor as detachable from the body. Does anyone know if this is still likely in the final production model.
Regards
Mark
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