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Pentax 645D- A potential winner
#11
[quote name='Alexander (former netrex)' date='09 June 2010 - 04:20 PM' timestamp='1276093211' post='388']

Hm, I don't get it. Why would then the 1D be the same in those aspects? I'm confused <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/tongue.gif' class='bbc_emoticon' alt=':blink:' />

[/quote]



The lenses that can be used with the 645D are for a larger sensor by a factor 1.36, just like the lenses that can be used for the 1D are for a larger sensor by a factor 1.3. Yes, the sensor of the 645D is significantly larger than the 1D or 1Ds, but the lenses available aren't as wide-angle as for a full medium format camera, which is certainly a problem for landscapers.



-Lars
#12
[quote name='larsrc' date='09 June 2010 - 04:40 PM' timestamp='1276098002' post='390']

... Yes, the sensor of the 645D is significantly larger than the 1D or 1Ds, but the lenses available aren't as wide-angle as for a full medium format camera, which is certainly a problem for landscapers.



-Lars

[/quote]



I might be wrong, but wouldn't people who are able to spend 6400 Pounds on a medium format camera, use some type of panoramic tripod to work around this limitation? Just my two coins [Image: wink.gif]
#13
[quote name='Project2501' date='09 June 2010 - 06:29 PM' timestamp='1276100960' post='392']

I might be wrong, but wouldn't people who are able to spend 6400 Pounds on a medium format camera, use some type of panoramic tripod to work around this limitation? Just my two coins [Image: wink.gif]

[/quote]



There are scenes you cannot take with multiple shots, even in landscapes.



-Lars
#14
[quote name='Alexander (former netrex)' date='09 June 2010 - 03:20 PM' timestamp='1276093211' post='388']

Hm, I don't get it. Why would then the 1D be the same in those aspects? I'm confused <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/tongue.gif' class='bbc_emoticon' alt=':blink:' />

[/quote]



The crop factor is in relation to the corresponding film format. That is 6x4.5 for the Pentax and 24x36mm for the 1D.



-- Markus
Editor
opticallimits.com

#15
[quote name='Project2501' date='09 June 2010 - 05:29 PM' timestamp='1276100960' post='392']

... but wouldn't people who are able to spend 6400 Pounds on a medium format camera ...

[/quote]



Don't take that price for granted yet, it's just the Japanese price converted directly, no taxes and whatever else added.



It's probably safe to assume that the price over here is close to 9k or 10k if it is officially introduced here.



-- Markus
Editor
opticallimits.com

#16
[quote name='larsrc' date='09 June 2010 - 04:40 PM' timestamp='1276098002' post='390']

The lenses that can be used with the 645D are for a larger sensor by a factor 1.36, just like the lenses that can be used for the 1D are for a larger sensor by a factor 1.3. Yes, the sensor of the 645D is significantly larger than the 1D or 1Ds, but the lenses available aren't as wide-angle as for a full medium format camera, which is certainly a problem for landscapers.



-Lars

[/quote]

Ah, I see now. I've been up for 28 hours now, so I needed some fresh air to read it correctly <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/tongue.gif' class='bbc_emoticon' alt=':blink:' />
#17
[quote name='Alexander (former netrex)' date='09 June 2010 - 10:44 PM' timestamp='1276087497' post='385']

The sensor is much larger than the 1D sensors (APS-H, 28.7mm*19mm). The 645D crop factor is 0.78, not 1.36. Its diagonal is 55mm vs. the APS-H's diagonal is 34.4mm, so the crop factor is 1.26 (if the sensor is exactly 28.7mm*19mm).



Unless I've misunderstood something very much.

[/quote]



The only problem is we don't always fit our subjects diagonally... not always:



http://www.flickr.com/photos/genotypewri...412366421/



<img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='Sad' />



GTW
  


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