6/24 | CHARLESTON
Top-Tier Gear to Revere. Sponsored by the MAC Group, Bogen Imaging, High Output, and Capture Integration.
Infrared Modified P45 plus
39 megapixel infrared digital back in stock this month only. Call for a demo.
Capture One 4.1.1 RELEASED
Phase One tethering and new features!
Miami Open House Event May 7,2008
Come see Phase Backs and Color Mangement
Old San Jaun PhotoWorkshop
May 13-17, 2008
Upgrade Your Classic Hasselblad
Use your favorite glass. Upgrade your body.
Architectural Bundle
FREE Cambo Wide DS body with a 24mm or 35mm lens w/ P25+ or P45+
Clearance Items
Digital Backs, Canon dSLRs, Profoto and more up to 81% off
Infrared Phase One P45+

Background
This article is about the Phase One P45+ IR which is a version of the P45+ modified for infrared photography. This test is to show the results of using various filters with the P45+ IR. It also compares the visible-only photographs of the P45+ IR with the visible-only photographs of the standard P45+.
In infrared photography the sensor (or film) can see infrared light, which is beyond the visible spectrum of light. It is easiest, though not entirely accurate, to think of infrared light as a 4th color after blue, green, and red. This allows for infrared+visible photography where the camera sees RGB and infrared. Infrared-only photography is possible by using a filter which removes visible light. By adding a filter which removes infrared light such a camera can also take standard (i.e. visible-only) photographs.
Test Equipment - Filters
For Infrared-only: Kodak 89B filter
For Infrared-only: Hoya R72 filter
For Infrared+visible*: Infracolor Orange 099
For Visible-only: 1st gen Phase One IR-Cut filter
For Visible-only: 2nd gen Phase One IR-Cut filter
For Visible-only: B+W 486 IR-UV-Cut Filter
*The infracolor orange filter removes about half of the visible spectrum
Test Equipment - Camera / Body / Lens
Standard Phase One P45+
IR-Modified Phase One P45+ (a.k.a. “P45+ IR”)
Hasselblad H2
Hasselblad HC80mm
Heavy Tripod
Testing Notes
1/125th or 1/60th sec at f11 using ISO50.
Triggered by Self Timer
Downloads
Full-Res full-frame in native color space in a ZIP file
Low-Res full-frame in sRGB in a ZIP file
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Phase One P45+ and P25+
Test Equipment:
- Cambo Wide DS
- Schneider Digitar XL 35mm f/5.6 lens
- Heavy Tripod
Processing Method:
All raw-development was done with Capture One 4.1.1. Files were white balanced using Color Chart at image-bottom. Lens Cast was corrected using LCC. Images were upsized to 16bit TIFFs at 9000 pixels wide (to allow valid comparison between the different native resolutions) and sharpening disabled. Noise reduction set in Capture One 4.0 to 15/30 (which is low). Unsharp mask (100% 1.3pixel 1 threshold) applied to both files in Photoshop.
Testing Notes:
1/15th sec at f11 using ISO 50. 5mm of rise was given
Triggered by Cable Release
Downloads:
Screen Resolution Full-frame JPGs in a ZIP File
Upsized and equally sharpened crops as 8-bit TIFFs in a ZIP file
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Phase One P25 and Leaf Aptus 22
August 2005
Download Leaf Aptus 22 full resolution JPG
Download Phase One P25 full resolution JPG
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Phase One’s Wide Angle Solution Comparison
This comparison done by Phase One is between a Schneider 35mm XL lens, as used on a Cambo Wide DS or Horseman SWD, and a Hasselblad HC 35mm lens.
Download Phase One Wide Angle Solution Comparison
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