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Thread started 23 Sep 2010 (Thursday) 10:56
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Pentax 645D global launch

 
jdizzle
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Sep 29, 2010 18:49 |  #16

OK folks! Here are some products and accessories for the camera. :) If I had my choice, I'd go for the 35mm and 55mm. What would you guys choose? :)

http://shop.pentax.jp …gory.aspx?categ​ory=100503 (external link)




  
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Ihmemies
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Oct 01, 2010 18:37 |  #17

Funnily enough it seems Pentax has better variety of 645 lenses than 35mm lenses available :D Of course old manual focus 645 glass should work just fine too.


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Er1kksen
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Oct 02, 2010 08:20 |  #18

Ihmemies wrote in post #11017041 (external link)
Funnily enough it seems Pentax has better variety of 645 lenses than 35mm lenses available :D Of course old manual focus 645 glass should work just fine too.

In japan, at least...

I would also go for the 35mm but then I'd get the 120mm f4 macro as well. :D


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jetcode
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Oct 02, 2010 19:17 |  #19
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Semi small problem. The sensor they picked doesn't have bad dynamic range but it's not the best either. No doubt they got a deal on this sensor. The 9um 22mp sensor has 84db dynamic range and the 6um 40mp has 70.2db (note the 50mp is 72db). That's fairly significant though all other high density sensors fair about the same. The resolution is there and I believe this camera will shine in low contrast scenes but I'm not sure it will hold a high contrast scene. I just had a page up with 5 images from Pentax and the shadows seemed a tad dark. Actually the images seemed dark. I'm not on an Eizo but this monitor is purported to have a wide color gamut.

I am pleasantly surprised to find a significant amount of useable data in the shadows. In fact a curves adjust which blows the mids and highs out reveals quite nice color rendition and detail. Wow. I can't get that kind of lift out of my 5DII files for sure. Definitely noise in those shadows but that changes the game entirely.




  
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downhillnews
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Oct 02, 2010 22:08 as a reply to  @ jetcode's post |  #20

http://www.youtube.com​/watch?v=7wPD1wRpels (external link)


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jetcode
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Oct 02, 2010 22:18 |  #21
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here's a link to the 3rd and 5th image

http://www.pentax.jp …dium/645d/image​/ex_03.jpg (external link)
http://www.pentax.jp …dium/645d/image​/ex_05.jpg (external link)




  
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jonathanslam
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Oct 02, 2010 23:45 |  #22

Lemme see...

good bye car, good bye camera, good bye house...

well hello there pentax 645D...


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Feedback / Feedback 2 / Feedback 3 / Feedback 4

  
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jetcode
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Oct 03, 2010 00:01 |  #23
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check out #4 ... that flat out smokes ...

="http://www.pentax.jp​/japan/imaging/digital​/medium/645d/image/ex_​04.jpg"




  
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downhillnews
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Oct 03, 2010 00:04 |  #24

jetcode wrote in post #11022132 (external link)
Semi small problem. The sensor they picked doesn't have bad dynamic range but it's not the best either. No doubt they got a deal on this sensor. The 9um 22mp sensor has 84db dynamic range and the 6um 40mp has 70.2db (note the 50mp is 72db). That's fairly significant though all other high density sensors fair about the same. The resolution is there and I believe this camera will shine in low contrast scenes but I'm not sure it will hold a high contrast scene. I just had a page up with 5 images from Pentax and the shadows seemed a tad dark. Actually the images seemed dark. I'm not on an Eizo but this monitor is purported to have a wide color gamut.

I am pleasantly surprised to find a significant amount of useable data in the shadows. In fact a curves adjust which blows the mids and highs out reveals quite nice color rendition and detail. Wow. I can't get that kind of lift out of my 5DII files for sure. Definitely noise in those shadows but that changes the game entirely.

The Pentax engineer is claiming that kodak underates their DR on their sensors.


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jetcode
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Oct 03, 2010 00:10 |  #25
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That's good on the DR ... I've been mucking with the files and some things I've noticed. At view of 50% the image is full resolution splendor. More detail than I have seen in quite some time. #4 looks like the best of MF and LF. What I love about the resolution is tone based sharpening rather than having to use local contrast to form the perception of a sharper image.

An essential item in my mind ...
http://www.fotodiox.co​m …t_info.php?prod​ucts_id=48 (external link)




  
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jdizzle
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Oct 03, 2010 10:35 |  #26

Impressive video. I'm sold. :)




  
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jetcode
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Oct 03, 2010 11:43 |  #27
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jdizzle wrote in post #11024951 (external link)
Impressive video. I'm sold. :)

I'd like to see how it handles strobes and sunlit landscapes. So far every image is in overcast or indirect light.

Here's an interesting print resolution chart ...
http://www.westcoastim​aging.com …info/FAQ/faqpri​ntlab.html (external link)




  
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Shadowblade
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Oct 03, 2010 12:23 |  #28

I'm interested in seeing the lens lineup.

Also, any chance of an adaptor to use the Canon TS-E 17L on this camera? With it's sensor size, it'd give an equivalent horizontal angle of view of a 14mm lens on full frame (vertical would be different, since the aspect ratio is 4:3), while retaining tilt and shift capability - a fantastic landscape setup!




  
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jetcode
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Oct 03, 2010 12:30 |  #29
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I'm waiting for the 100MP range finder version with 18 stops of DR for $2500. It will likely be made with unobtanium.

Shadowblade my guess is the image circle of the 17L will barely fit the sensor so expect lots of vignetting and no movements.

Since I have a top shelf flatbed scanner I am seriously considering a Hassy 6x6 with Zeiss! Even a Mamiya 645 kit can be had for $700 with 3 lenses. Yikes I paid a small fortune for mine years ago.




  
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Shadowblade
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Oct 03, 2010 12:34 |  #30

jetcode wrote in post #11025427 (external link)
I'm waiting for the 100MP range finder version with 18 stops of DR for $2500. It will likely be made with unobtanium.

Shadowblade my guess is the image circle of the 17L will barely fit the sensor so expect lots of vignetting and no shifts.

The image circle of the TS-E 17 is 67.2mm. The diagonal of the Pentax 645D is 55mm. Plenty of room there.




  
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Pentax 645D global launch
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