Luminous Landscape Forum

Equipment & Techniques => Medium Format / Film / Digital Backs – and Large Sensor Photography => Topic started by: doncody on March 26, 2007, 09:54:29 am

Title: Pentax 645
Post by: doncody on March 26, 2007, 09:54:29 am
The following links were just posted on DP Review.  Things are getting really interesting!

http://dc.watch.impress.co.jp/cda/other/2007/03/22/5892.html (http://dc.watch.impress.co.jp/cda/other/2007/03/22/5892.html)

http://www.akihabaranews.com/en/news-13499...or+killers.html (http://www.akihabaranews.com/en/news-13499-Photo+Imagine+Expo+07%3A+Pentax+645+Digital+for+killers.html)

Here's the complete thread

http://forums.dpreview.com/forums/readflat...22573934&page=1 (http://forums.dpreview.com/forums/readflat.asp?forum=1036&thread=22573934&page=1)

Best,
Don
Title: Pentax 645
Post by: Mort54 on March 26, 2007, 11:46:10 am
Quote
The following links were just posted on DP Review.  Things are getting really interesting!

http://dc.watch.impress.co.jp/cda/other/2007/03/22/5892.html (http://dc.watch.impress.co.jp/cda/other/2007/03/22/5892.html)

http://www.akihabaranews.com/en/news-13499...or+killers.html (http://www.akihabaranews.com/en/news-13499-Photo+Imagine+Expo+07%3A+Pentax+645+Digital+for+killers.html)

Here's the complete thread

http://forums.dpreview.com/forums/readflat...22573934&page=1 (http://forums.dpreview.com/forums/readflat.asp?forum=1036&thread=22573934&page=1)

Best,
Don
[a href=\"index.php?act=findpost&pid=108753\"][{POST_SNAPBACK}][/a]

Well, that certainly does look interesting, doesn't it. I didn't see anywhere what the size of the sensor is (it's 31 MP, but I'm talking about physical size).

Thanks for posting.

Hans.
Title: Pentax 645
Post by: doncody on March 26, 2007, 11:54:09 am
Quote
Well, that certainly does look interesting, doesn't it. I didn't see anywhere what the size of the sensor is (it's 31 MP, but I'm talking about physical size).

Thanks for posting.

Hans.
[a href=\"index.php?act=findpost&pid=108780\"][{POST_SNAPBACK}][/a]
Hans,

I'm also curious who the sensor manufacturer is.

Don
Title: Pentax 645
Post by: Ben Rubinstein on March 26, 2007, 11:58:41 am
Quote
Hans,

I'm also curious who the sensor manufacturer is.

Don
[a href=\"index.php?act=findpost&pid=108783\"][{POST_SNAPBACK}][/a]

Kodak apparently.
Title: Pentax 645
Post by: BJL on March 26, 2007, 12:03:45 pm
It is the  Kodak KAF-31600 (http://www.kodak.com/US/en/dpq/site/SENSORS/name/KAF-31600_product), 33x44mm, same pixel size as in the 39MP, 37x49mm KAF-39000, but with microlenses which about double usable ISO speed.

So, same sensor as in the H3D-31, but probably priced more like Mamiya ZD or even less.

I can see this possibly restoring the place of Pentax "645" in wedding photography.


P. S. After reading Michael's latest post on the Mamiya ZD, I have to say that at least Pentax got the LCD size right. With up to 3" LCD's in "pocket cams", and 2.5" now standard in even the smallest DSLR formats, it is strange that MF offers anything less; especially less than 2" as in the ZD.

For comparison, about 2.7" diagonal LCD would match the image size on the ground glass of 645 format, and 3" about matches the image size on the ground glass in 6x6 format. Given that many people have worked successfully with the top down viewing of the image on the ground glass of a traditional MF viewfinder, a 3" LCD could be at least equally useful for preview and review once the resolution is high enough (which it is not yet, arguably, until one zooms the LCD image).
Title: Pentax 645
Post by: Mort54 on March 26, 2007, 07:34:25 pm
Here are a couple more images from Pentax's web site. These look more like graphics renderings rather than actual photos, but they seem consistent with the working model shown in the above links.

http://www.pentax.co.jp/japan/news/2007/pr...e/200708-08.jpg (http://www.pentax.co.jp/japan/news/2007/press-image/200708-08.jpg)

http://www.pentax.co.jp/japan/news/2007/pr...e/200708-09.jpg (http://www.pentax.co.jp/japan/news/2007/press-image/200708-09.jpg)