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01-23-2011, 07:40 PM   #1

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645D - very good in the field

I thought Iíd post this for anyone interested. Not a comprehensive review and not a great image, but taken under trying conditions. So far, I find he 645D is a remarkable camera in terms of the quality produced with old lenses and its ease of use in the field. I bought the camera with considerable reservation. I was happy with my Pentax 67II, and had not yet thought I could do better with digital. Attached is a picture taken from the frozen shore of Lake Erie; mounds of ice as high as 60 ft form along the shore most years. In the past, Iíve used my Pentax 67II, this year I had a 645D with a 45-85mm FA. This shot is handheld, whereas I would never have tried this shot on the 67 without a tripod. The crop is from the center of the image just below the largest cloud,it is actual pixels and shows a vapor plume from a Canadian power plant about 60 miles away. Temperature was 4 Fahrenheit- no problems whatsoever with the camera. The camera works in harsh conditions and delivers very good images. The dynamic range in this photo is quite high, yet the 645D had no trouble.

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01-23-2011, 08:26 PM   #2
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Thanks for sharing! Have you tried any of your 6x7 lenses yet on the 645D?
01-23-2011, 08:52 PM   #3

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That's nice. I wouldn't have any reservations shooting my 67 with a 45mm lens at 1/125 handheld. But then again I don't expect to make posters out all my shots.
01-23-2011, 11:52 PM   #4
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Beautiful rendition to a high dynamic range challenge.
The 645D is well suited in your conditions.

01-24-2011, 05:42 AM   #5

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Ole, all the 67 lenses Iíve tried work well. The 90mm f/2.8 has really nice OOF areas when used wide open and is very close focusing; it might be useful as a portrait lens on the 645D, The 300mm ED is also very impressive on the 645D, but no surprise there. The 45mm is also quite good, likely better than the 645 45mm.
Tuco, I would be willing to handhold the 67 with a 45mm at 1/125 as well, although as you know a tripod always helps. The 645D was ISO 200, had I been using the 67, ISO would have been 50 or 100. So the shutter speed would have been 1/30 or 1/60. For the same FOV, I would have used a 75mm on the 67 and likely at f/11 or f/16 to maintain DOF lowering the shutter speed even more.

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