645D is here ...

Blue · 02-15-2010, 09:38 PM

Originally posted by falconeye

Ok, nothing new in the Vol.1 News installment (and http://www.camera-pentax.jp/new/news02/index.html doesn't exist yet

But I had time to think about it.

1. The 1.7x surface 35mm crop allows for the KAF-40000 sensor or some other similiar-sized sensor.

2. The leaked 645D user manual cover mentions DNG as raw format.

3. Uncompressed DNG from Pentax are (so far) about 13 Bit per Pixel, compressed ones are about 60% as large.

Taking the 100 MB quote from Pentax, this would imply
- 17 MP (16 Bit TIFF / linear DNG encoding)
- 52 MP (16 Bit Bayer encoding)
- 65 MP (13 Bit Bayer encoding)
- 100 MP (13 Bit Bayer encoding compressed)

I don't think they mean the first interpretation as a K-7 does already produce 87 MB uncompressed 48bpp TIFF files ...

I don't think they have taken Kodak's 50MP sensor. It has a poor quantum efficiency (a full stop less than their 40MP sensor!!).

Therefore, I actually start to think that the KAF-40000 is the most plausible candidate in a list of few.

That suggests that these are the likely possibilities, KAF-39000 and KAF-40000. I'm leaning towards the 1st one.

Steve Beswick · 02-15-2010, 09:39 PM

I just thought I would point out that the image at ƒfƒWƒ^ƒ‹ˆêŠáƒŒƒtƒJƒƒ‰FPENTAX V»•i—\ƒTƒCƒg has changed.

ogl · 02-15-2010, 09:50 PM

Originally posted by Blue

That suggests that these are the likely possibilities, KAF-39000 and KAF-40000. I'm leaning towards the 1st one.

KAF-39000 has crop-factor 1.1. It's not 1.7x bigger than 35 mm area. It's bigger.

bogiesbad · 02-15-2010, 09:54 PM

Originally posted by Steve Beswick

I just thought I would point out that the image at ƒfƒWƒ^ƒ‹ˆêŠáƒŒƒtƒJƒƒ‰FPENTAX V»•i—\ƒTƒCƒg has changed.

And that little arrow on the countdown timer just keeps inching right toward the little camera icon...it's maddening!!

Love the body curve at the prism hump.

Blue · 02-15-2010, 10:02 PM

Originally posted by ogl

KAF-39000 has crop-factor 1.1. It's not 1.7x bigger than 35 mm area. It's bigger.

Actually, the active area is 49 x 36.8mm and diagonal of 61.3mm.

http://www.kodak.com/global/plugins/acrobat/en/business/ISS/productsummary/F...uctSummary.pdf

The KAF-40000 as an active area of 45.76mm x 35.34mm and 54.78mm diagonal.

http://www.kodak.com/global/plugins/acrobat/en/business/ISS/productsummary/F...uctSummary.pdf

jptreen · 02-15-2010, 10:24 PM

ƒfƒWƒ^ƒ‹ˆêŠáƒŒƒtƒJƒƒ‰FPENTAX V»•i—\ƒTƒCƒg

Check it out again...we've got detail!

jptreen · 02-15-2010, 10:29 PM

it appears to be missing a button and a metal knob from at least one prototype that's been photographed, but it pretty much cleans it up as the 645D (if there was any real doubt anyway!)

They're actually going to release the damn thing!

ogl · 02-15-2010, 11:05 PM

ISO and Av+/- buttons?

ibk · 02-16-2010, 12:01 AM

A little brightened version:

falconeye · 02-16-2010, 03:47 AM

Originally posted by Blue

That suggests that these are the likely possibilities, KAF-39000 and KAF-40000. I'm leaning towards the 1st one.

Originally posted by ogl

KAF-39000 has crop-factor 1.1. It's not 1.7x bigger than 35 mm area. It's bigger.

Originally posted by Blue

Actually, the active area is 49 x 36.8mm and diagonal of 61.3mm.

Correct, the KAF-39000 has a 35mm surface factor of 2.1, not 1.7 as announced by Pentax.

Of all Kodak product offerings, the older KAF-31600 from 2006 is the only other claim-compatible candidate.

Christopher M.W.T · 02-16-2010, 03:55 AM

Interesting this photo doesn't have the M.Up button.

ANy commentary on Medium Format Digital for astrophotography?

thibs · 02-16-2010, 03:57 AM

Originally posted by C.W Tsorotes

Interesting this photo doesn't have the M.Up button.

ANy commentary on Medium Format Digital for astrophotography?

mmm indeed

Christopher M.W.T · 02-16-2010, 03:59 AM

Originally posted by falconeye

Ok, nothing new in the Vol.1 News installment (and http://www.camera-pentax.jp/new/news02/index.html doesn't exist yet

But I had time to think about it.

1. The 1.7x surface 35mm crop allows for the KAF-40000 sensor or some other similiar-sized sensor.

2. The leaked 645D user manual cover mentions DNG as raw format.

3. Uncompressed DNG from Pentax are (so far) about 13 Bit per Pixel, compressed ones are about 60% as large.

Taking the 100 MB quote from Pentax, this would imply
- 17 MP (16 Bit TIFF / linear DNG encoding)
- 52 MP (16 Bit Bayer encoding)
- 65 MP (13 Bit Bayer encoding)
- 100 MP (13 Bit Bayer encoding compressed)

I don't think they mean the first interpretation as a K-7 does already produce 87 MB uncompressed 48bpp TIFF files ...

I don't think they have taken Kodak's 50MP sensor. It has a poor quantum efficiency (a full stop less than their 40MP sensor!!).

Therefore, I actually start to think that the KAF-40000 is the most plausible candidate in a list of few.

How does the K7 produce 87mb TIFs?

thibs · 02-16-2010, 04:29 AM

Dunno, mine produces 45-50 MB TIFFs.

ghelary · 02-16-2010, 04:32 AM

Originally posted by C.W Tsorotes

How does the K7 produce 87mb TIFs?

Originally posted by thibs

Dunno, mine produces 45-50 MB TIFFs.

Tiff is a format that encodes all 3 colors for every pixel, on either 8 or 16 bits and can be compressed or not.

So there's no point in comparing with what you export from the K7.

02-16-2010, 12:01 AM	#189
ibk Forum Member Join Date: Sep 2006 Location: Sofia, Bulgaria Photos: Gallery Posts: 55	A little brightened version: Attached Images

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02-15-2010, 09:38 PM	#181
Blue Moderator Site Supporter Join Date: Jun 2008 Location: Florida Hill Country Photos: Gallery \| Albums Posts: 17,377	Originally posted by falconeye Ok, nothing new in the Vol.1 News installment (and http://www.camera-pentax.jp/new/news02/index.html doesn't exist yet But I had time to think about it. 1. The 1.7x surface 35mm crop allows for the KAF-40000 sensor or some other similiar-sized sensor. 2. The leaked 645D user manual cover mentions DNG as raw format. 3. Uncompressed DNG from Pentax are (so far) about 13 Bit per Pixel, compressed ones are about 60% as large. Taking the 100 MB quote from Pentax, this would imply - 17 MP (16 Bit TIFF / linear DNG encoding) - 52 MP (16 Bit Bayer encoding) - 65 MP (13 Bit Bayer encoding) - 100 MP (13 Bit Bayer encoding compressed) I don't think they mean the first interpretation as a K-7 does already produce 87 MB uncompressed 48bpp TIFF files ... I don't think they have taken Kodak's 50MP sensor. It has a poor quantum efficiency (a full stop less than their 40MP sensor!!). Therefore, I actually start to think that the KAF-40000 is the most plausible candidate in a list of few. That suggests that these are the likely possibilities, KAF-39000 and KAF-40000. I'm leaning towards the 1st one.

02-15-2010, 09:39 PM	#182
Steve Beswick Veteran Member Join Date: Apr 2009 Location: Ontario, California Photos: Gallery Posts: 1,736	I just thought I would point out that the image at ƒfƒWƒ^ƒ‹ˆêŠáƒŒƒtƒJƒƒ‰FPENTAX V»•i—\ƒTƒCƒg has changed.

02-15-2010, 09:50 PM	#183
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	Originally posted by Blue That suggests that these are the likely possibilities, KAF-39000 and KAF-40000. I'm leaning towards the 1st one. KAF-39000 has crop-factor 1.1. It's not 1.7x bigger than 35 mm area. It's bigger.

02-15-2010, 09:54 PM	#184
bogiesbad Veteran Member Join Date: Dec 2008 Location: Lower AL Photos: Albums Posts: 355	Originally posted by Steve Beswick I just thought I would point out that the image at ƒfƒWƒ^ƒ‹ˆêŠáƒŒƒtƒJƒƒ‰FPENTAX V»•i—\ƒTƒCƒg has changed. And that little arrow on the countdown timer just keeps inching right toward the little camera icon...it's maddening!! Love the body curve at the prism hump.

02-15-2010, 10:02 PM	#185
Blue Moderator Site Supporter Join Date: Jun 2008 Location: Florida Hill Country Photos: Gallery \| Albums Posts: 17,377	Originally posted by ogl KAF-39000 has crop-factor 1.1. It's not 1.7x bigger than 35 mm area. It's bigger. Actually, the active area is 49 x 36.8mm and diagonal of 61.3mm. http://www.kodak.com/global/plugins/acrobat/en/business/ISS/productsummary/F...uctSummary.pdf The KAF-40000 as an active area of 45.76mm x 35.34mm and 54.78mm diagonal. http://www.kodak.com/global/plugins/acrobat/en/business/ISS/productsummary/F...uctSummary.pdf

02-15-2010, 10:24 PM	#186
jptreen Senior Member Join Date: Aug 2009 Location: "around" Posts: 116	ƒfƒWƒ^ƒ‹ˆêŠáƒŒƒtƒJƒƒ‰FPENTAX V»•i—\ƒTƒCƒg Check it out again...we've got detail!

02-15-2010, 10:29 PM	#187
jptreen Senior Member Join Date: Aug 2009 Location: "around" Posts: 116	it appears to be missing a button and a metal knob from at least one prototype that's been photographed, but it pretty much cleans it up as the 645D (if there was any real doubt anyway!) They're actually going to release the damn thing!

02-15-2010, 11:05 PM	#188
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	ISO and Av+/- buttons?

02-16-2010, 03:47 AM	#190
falconeye Veteran Member Join Date: Jan 2008 Location: Munich, Alps, Germany Photos: Gallery Posts: 6,871	Originally posted by Blue That suggests that these are the likely possibilities, KAF-39000 and KAF-40000. I'm leaning towards the 1st one. Originally posted by ogl KAF-39000 has crop-factor 1.1. It's not 1.7x bigger than 35 mm area. It's bigger. Originally posted by Blue Actually, the active area is 49 x 36.8mm and diagonal of 61.3mm. Correct, the KAF-39000 has a 35mm surface factor of 2.1, not 1.7 as announced by Pentax. Of all Kodak product offerings, the older KAF-31600 from 2006 is the only other claim-compatible candidate.

02-16-2010, 03:55 AM	#191
Christopher M.W.T Veteran Member Join Date: Jun 2009 Posts: 1,689	Interesting this photo doesn't have the M.Up button. ANy commentary on Medium Format Digital for astrophotography?

02-16-2010, 03:57 AM	#192
thibs Pentaxian Join Date: Jun 2007 Location: Belgium Photos: Albums Posts: 7,001	Originally posted by C.W Tsorotes Interesting this photo doesn't have the M.Up button. ANy commentary on Medium Format Digital for astrophotography? mmm indeed

02-16-2010, 03:59 AM	#193
Christopher M.W.T Veteran Member Join Date: Jun 2009 Posts: 1,689	Originally posted by falconeye Ok, nothing new in the Vol.1 News installment (and http://www.camera-pentax.jp/new/news02/index.html doesn't exist yet But I had time to think about it. 1. The 1.7x surface 35mm crop allows for the KAF-40000 sensor or some other similiar-sized sensor. 2. The leaked 645D user manual cover mentions DNG as raw format. 3. Uncompressed DNG from Pentax are (so far) about 13 Bit per Pixel, compressed ones are about 60% as large. Taking the 100 MB quote from Pentax, this would imply - 17 MP (16 Bit TIFF / linear DNG encoding) - 52 MP (16 Bit Bayer encoding) - 65 MP (13 Bit Bayer encoding) - 100 MP (13 Bit Bayer encoding compressed) I don't think they mean the first interpretation as a K-7 does already produce 87 MB uncompressed 48bpp TIFF files ... I don't think they have taken Kodak's 50MP sensor. It has a poor quantum efficiency (a full stop less than their 40MP sensor!!). Therefore, I actually start to think that the KAF-40000 is the most plausible candidate in a list of few. How does the K7 produce 87mb TIFs?

02-16-2010, 04:29 AM	#194
thibs Pentaxian Join Date: Jun 2007 Location: Belgium Photos: Albums Posts: 7,001	Dunno, mine produces 45-50 MB TIFFs.

02-16-2010, 04:32 AM	#195
ghelary Veteran Member Join Date: Jul 2008 Location: Paris, France Photos: Gallery Posts: 613	Originally posted by C.W Tsorotes How does the K7 produce 87mb TIFs? Originally posted by thibs Dunno, mine produces 45-50 MB TIFFs. Tiff is a format that encodes all 3 colors for every pixel, on either 8 or 16 bits and can be compressed or not. So there's no point in comparing with what you export from the K7.