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Author Topic: P25 vs P45  (Read 5777 times)

johnE

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P25 vs P45
« on: August 08, 2007, 11:54:32 pm »

I am considering a p25 or a p45 for my Contax. I am trying to decide where the one back will make a difference over the other. I would be very interested in hearing from anyone who has owned both.

For example would a p45 produce a better file always, even for an 16x20 print?
« Last Edit: August 09, 2007, 02:13:31 am by johnE »
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clawery

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P25 vs P45
« Reply #1 on: August 09, 2007, 10:35:35 am »

John,

Here are some samle files that we had shot comparing the P25 to the P45. Let me know what you think.

http://www.captureintegration.com/comparis...P45-vs-P25.html


Chris Lawery
Sales Manager
Capture Integration
www.captureintegration.com
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David Blankenship

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P25 vs P45
« Reply #2 on: August 09, 2007, 10:59:38 am »

Quote
John,

Here are some samle files that we had shot comparing the P25 to the P45. Let me know what you think.

http://www.captureintegration.com/comparis...P45-vs-P25.html
Chris Lawery
Sales Manager
Capture Integration
www.captureintegration.com
[a href=\"index.php?act=findpost&pid=132320\"][{POST_SNAPBACK}][/a]
John,

The P-25 file looks pretty damn good, it just renders the brick a little more red.  Shadow detail is a little better on the P-25.     Could that could be to a different exposure settting.....Chris????.  

db
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johnE

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P25 vs P45
« Reply #3 on: August 09, 2007, 11:20:16 am »

Quote
John,

Here are some samle files that we had shot comparing the P25 to the P45. Let me know what you think.

http://www.captureintegration.com/comparis...P45-vs-P25.html
Chris Lawery
Sales Manager
Capture Integration
www.captureintegration.com
[a href=\"index.php?act=findpost&pid=132320\"][{POST_SNAPBACK}][/a]

Thanks Chris!

That was informative - very little difference in quality to my eye.

From your experience,  Native image size is 13x18 for p25 vs 18x24 for p45. If you were to print both of the images, at what size would you begin to see the difference?
« Last Edit: August 09, 2007, 11:21:04 am by johnE »
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RicAgu

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P25 vs P45
« Reply #4 on: August 10, 2007, 02:33:23 pm »

I just finished a large shoot using the P45 and I own the P25 and was blown away at the detail the P45 produced.  I was very happy with the P25 and now the P45.  It is not about the final output size but the detail it captures at native resolution.
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pprdigital

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P25 vs P45
« Reply #5 on: August 10, 2007, 02:55:01 pm »

Quote
I just finished a large shoot using the P45 and I own the P25 and was blown away at the detail the P45 produced.  I was very happy with the P25 and now the P45.  It is not about the final output size but the detail it captures at native resolution.
[a href=\"index.php?act=findpost&pid=132541\"][{POST_SNAPBACK}][/a]

The first test I did with a 39 megapixel back was an interior shot also captured with a 22MP back that was outputted at 8x11. On the 22MP the doorknob across the room looked like a small gray-ish blob. On the 39MP it looked a doorknob. That's the difference. Richard is absolutley correct - you can certainly scale images bigger, you can crop smaller and still enlarge, but even at native size, you gain better rendition of detail.

Steve Hendrix
PPR
www.ppratlanta.com
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Steve Hendrix
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clawery

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P25 vs P45
« Reply #6 on: August 10, 2007, 03:58:17 pm »

Quote
John,

The P-25 file looks pretty damn good, it just renders the brick a little more red.  Shadow detail is a little better on the P-25.     Could that could be to a different exposure settting.....Chris????.  

db
[a href=\"index.php?act=findpost&pid=132326\"][{POST_SNAPBACK}][/a]


That could be from either different camera settings or possibly different coatings on the lenses.

Chris Lawery
Sales Manager
Capture Integration
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johnE

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P25 vs P45
« Reply #7 on: August 11, 2007, 01:15:40 am »

Quote
The first test I did with a 39 megapixel back was an interior shot also captured with a 22MP back that was outputted at 8x11. On the 22MP the doorknob across the room looked like a small gray-ish blob. On the 39MP it looked a doorknob. That's the difference. Richard is absolutley correct - you can certainly scale images bigger, you can crop smaller and still enlarge, but even at native size, you gain better rendition of detail.

Steve Hendrix
PPR
www.ppratlanta.com
[a href=\"index.php?act=findpost&pid=132542\"][{POST_SNAPBACK}][/a]
I just shot with both backs today and they are both very impressive. A p45 can be purchased for a pretty good price since the + backs are out. The + backs are very nice, definately a better lcd.

What I really liked on the + was the ability to zoom in to check focus on the actual raw file (very high res) compared to the lower res jpg on the non +. So the choice for me is a P45 (non +) or a P25+. Maybe the P45 is the way to go.
« Last Edit: August 11, 2007, 01:18:47 am by johnE »
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Gary Ferguson

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P25 vs P45
« Reply #8 on: August 11, 2007, 04:32:37 pm »

I've used a P25 for about two years now, both on a Linhof and on a range of Hasselblad V cameras. I've been delighted with the P25 except for a couple of small issues that the P25+ seemed to address. However, the upgrade price for the P45+ wasn't much more than for the P25+, so I ordered the 39MP back.

For large fine art and display enlargements the extra pixels may come in handy, but for 99% of the commercial work that I do 22MP is plenty big enough. Once you get to full bleed on a double page spread at 300dpi it's pretty much the end of history!

So why did I trade up? It seemed to me that although 22Mp is enough for my purposes cheaper cards and faster processors means there's not much downside, and 39MP will protect the future value of my investment. Although I also suspect that the absolute image quality I was getting from two stitched P25 shots (using the sliding carriage on the Linhof) would be better than a single capture using the P45+ with an appropriately adjusted lens. I hasten to add that's just a theory, and as I won't have the P25 and the P45+ together to experiment with it'll probably remain just a theory!
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vgogolak

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P25 vs P45
« Reply #9 on: August 12, 2007, 11:25:24 pm »

I find the biggest advantage is the reduced need for post processing of sharpening.
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