Overview:

The Achromatic + Digital back is basically a Phase One P45+ with all "Bayer" CCD colour filtration removed. Thats not all though. The Achromatic Plus is subjected to the highest levels of quality controls. Special attention is paid to calibration and spectral sensitivity as well as ensuring a "flawless" image.

It is designed to integrate with all major conventional Medium Format, Large Format and Technical Cameras in addition to customized 'camera’ solutions and Photogrammetry system.

Black and White Photography, Select Spectrum Imagery and False Color Infrared and/or Ultraviolet Imaging has a newly defined horizon without the limitaions common in ordinary colour imaging systems.

The Achromatic+ Digital Back Replaces film with unsurpassed image quality, ease of application and unique repeatability for Photographers, Preservation Specialists and Scientific Imaging Professionals.

Designed and developed by: Bear Images in Palo Alto, California. Manufactured by Phase One of Copenhagen, DK. Sold and supported in the UK by DTEK Systems (UK) Ltd.

• Michael Reichmans review of the Acromatic + Here
• Walter Borchenko's Achromatic Plus Blog Article
• Bayer Filter Wiki

Achromatic+ Digital Back 39MP Specifications

Typical CCD Sensor Spectral Response:

Image courtesy of EASTMAN KODAK COMPANY

Available Models:
CV:  Classic Visible Photography
ER:  Extended Range Infrared and UV

Available Camera Mounts:
Phase One 645, Mamiya AFD, Hasselblad 500 Series
Hasselblad/Fuji H1 & H2, Contax 645

Normal Lens Focal Length: 72mm

CCD Size, effective Millimeters: 49.1mm x 36.8mm
Actual Pixels: 7216 x 5412, 39MP

Light Sensitivity (ISO): 50-800

Exposure Time Range: 1/10,000 sec. up to One Hour

Anticipated Battery Life:
up to ~2500 captures, up to 4 hours stand-by time

Image Quality: 16bit, 12+ f-stops Dynamic+  Range

Display: 2.2” QVGA TFT, 230,000 pixels high brightness and high contrast both indoor and outdoor, very fine details

Special Features:
Extended IR and UV Ranges
Easy to clean sensor
Live Preview functionality with CaptureOne 4 & 5 for easy composition and focus checking

Suggested Filter Options from B+W
(Schneider Optics) Call for Pricing.

B+W Filter Handbook PDF

B+W UV Black Filter 403 [UG ¡]
Not to be confused with UV-blocking filters that photographers normally refer to as “UV Filters”, this one passes UV A radiation (320 to 385 nm), but blocks visible light and looks pitch-black to our eyes. It is used with appropriately sensitized films in such applications as ultraviolet reflection photography in forensics or in materials research, but also as filters on UV-emitters for fluorescence photography. Depending on the illumination and on the film’s sensitization, its filter factor is in the range of 8 to 20.

B+W Infrared Filter 092 (≈ 89 B) [RG 695]
The nearly opaque B+W Infrared Filter 092, which looks dark purplish red when held in front of a light source, blocks visible light up to 650 nm, and passes only 50% of the radiation just below 700 nm (thus the dark red color). From 730 nm to 2000 nm, transmission is greater than 90%. This makes photographs of pure red and infrared images possible with the best utilization of the relatively low sensitivity of infrared films. As the sensitization of infrared black-and-white films barely extends beyond 1000 nm, the red portion that is transmitted still makes a relevant contribution to the exposure. That is why this filter is the preferred filter for pictorial photography on IR black-and-white film. Its filter factor is 20 to 40.

B+W Infrared Filter 093 (≈ 87 C) [RG 830]
This B+W Infrared Filter blocks the entire visible spectrum, so to our eyes it looks completely opaque. Unlike the infrared filter described above, it makes pure infrared photographs possible without the visible red component. Its transmission only begins to exceed ¡% at 800 nm, rising to 88% at 900 nm, and remains that high far beyond the upper limit of sensitization covered by infrared films. This filter is used less frequently in pictorial photography because of the dramatic loss of effective ISO. But in the scientific field, materials research and forensics, the limitation to a strictly infrared range is often important. The filter factor is very dependent on the illumination and on the characteristics of the film.

• Conventional Black and White Copy Photography with Preservation of Extreme Tonal Ranges.
  
  
• Extended Ultraviolet Imaging Sensitivity for Image Analysis and Authentication.
  
  
• Digital Zone-System Technology with Complete Optical Filtering Capabilities.
  
  
• Extended Infrared Imaging Capabilities for Image Analysis and Authentication.
  
  
• Unique True Data Imaging - No Bayer-Pattern Data Interpolation as found on conventional camera systems.
  
  
• Integration with Phase One Automated Camera Systems with 120mm Macro Reproduction Lenses and other Technical and Field cameras with ultra-high resolution optics from Rodenstock and Schneieder as well as all major medium and large format camera platform.
  
  
• Multi-Image Spectral Separation Photography for pure color-separation imaging and preservation of color originals.
  
  
• Ideal for Glass Plate Imaging, Large Format Aerial Film Digitization and volume digitization projects demanding the utmost in image quality.
  
  
• Compatible and Integrated with Phase One Capture One DB and Professional Softwares. Custom Imaging Applications also available for specialized imaging applications.

Information courtesy of Bear Images Photographic Phase One, Kodak and B+W (Schneider Optics)