Mamiya Leaf Credo 40MP Digital Back Kit with 645DF Medium Format DSLR and 80mm f/2.8 LS D Lens

SKU: MYLC40K MFR: 020-00300A
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About Mamiya 40MP

The Mamiya Leaf Credo 40MP Digital Back Kit with 645DF Medium Format DSLR and 80mm f/2.8 LS D Lens combines the 40MP Leaf Credo digital back with the 645DF camera and 80mm f/2.8 lens to create a fast, high resolution medium format photography system.

The Credo 40MP Digital Back houses a 43.9 x 32.9mm DALSA CCD sensor for exceptionally detailed, color-accurate, low-noise images and is the fastest of the Credo digital backs with a full resolution capture rate of 1.2fps. Its 3.2" touchscreen LCD provides accurate verification of colors, shadow details and focus and the bright 1.15MP screen with 170deg. viewing angle allows for improved viewing in challenging light. Its intuitive graphical user interface (GUI) means more efficient browsing and smart navigation and the touch screen controls extend beyond the LCD to keep the viewing area clean of fingerprints and smudges.

A dual core microprocessor and the latest CF technology provides fast capture and viewing rates and USB 3.0 and FireWire 800 technology offers rapid transfer speeds. Lossless 16-bit file compression accelerates file handling without loss of image quality. An internal battery charger keeps you ready to work un-tethered and the brilliant LCD with Live View allows for clear focus and composition on the go. The Credo back provides Capture One workflow software to seamlessly edit, enhance and present images and, with Capture Pilot, you can immediately preview images with an Apple iPhone or iPad and remotely control your camera. Weather-sealed construction offers peace of mind when shooting in less than optimal conditions.

The 645DF is an open platform, digital-only medium format camera that handles like a 35mm SLR, but with an image area almost 3 times as large (56 x 41.5 mm). It provides aperture-priority AE, shutter-priority AE, programmed AE (PH, PL setting possible) and manual TTL metering, center-weighted average (AV), spot (S) and variable ratio (A-S auto) exposure modes, auto-bracketing and it uses the TTL phase difference detection method for autofocus. When used with one of three Mamiya D lenses, including the Sekor AF 80mm f/2.8 LS D, it allows you to choose between the integral focal plane shutter and the leaf shutter and can achieve flash sync speeds up to 1/1600s.

The Sekor 80mm f/2.8 LS D Lens is a leaf shutter, normal digital lens with a 35mm equivalent focal length of 50mm. It is manufactured by Mamiya specifically for the 645DF camera and with top flash sync speeds of up to 1/1600 second and a maximum aperture of f/2.8 it is effective for bright professional strobe shooting and when shooting in available light.

Mamiya 40MP Features

  • Digital Back (Tradition of Quality and Innovation): Designed to the highest standards, the 40MP Credo is the fastest of a new line of medium format digital camera backs from Mamiya Leaf
  • Digital Back (Next Generation Display): The new high resolution 3.2", 1.15MP touch screen allows for quick and accurate verification of focus, tone and color. Outdoor usage has been made easier with a viewing angle of 170deg. and a brighter LCD
  • Digital Back (Custom Built CCD Sensors): Leaf Credo digital backs utilize the ultra-low-noise DALSA CCD sensors enabling the capture of fine details, rich tones and accurate colors
  • Digital Back (Speed): The Leaf Credo is built with a new, dual core microprocessor and extended buffer which offers unlimited shooting and the fastest image viewing, zooming and editing
  • Digital Back (Software): Phase One Capture One, one of the most powerful solutions for tethered shooting and RAW file post-processing, is included with Mamiya Leaf Credo Digital Backs
  • Digital Back (Portable shooting): An internal battery charger keeps the back always ready for un-tethered use and the bright LCD with extreme 170deg. angle of view allows for Live View use even in strong glare
  • Digital Back (Mamiya 645 Mount): This Credo 40 back is specifically designed to work with Mamiya 645 cameras
  • Camera Body: Medium format camera for use with digital backs having resolution from 22MP to 80MP
  • Camera Body: Image area 3x that of 35mm
  • Camera Body: Autofocus 30% faster than previous models
  • Camera Body: Performance upgrade for almost any digital back, including Leaf, Mamiya, Phase One and Sinar
  • Camera Body: 19 custom settings
  • Camera Body: Selectable dual shutter system--integral focal plane shutter or select lenses with integral leaf shutters
  • Camera Body: Dedicated lenses (available separately) with integral leaf shutters for sync speeds of up to 1/1600s
  • Lens: Equivalent to 50mm in 35mm format
  • Lens: Shutter speeds up to 1/1600 second
  • Lens: 72mm filter size

Mamiya 40MP Specifications

Digital Back: Imaging Sensor
43.9 x 32.9mm DALSA CCDCrop factor: 1:1.3
Digital Back: Effective Resolution
Digital Back: Pixels
7,320 x 5,484
Digital Back: Pixel Size
6.0 Micron
Digital Back: Capture Rate
1.2 frames/second
Digital Back: File Format
RAW file format IIQL (large) or IIQS (small)
The IIQ stands for "intelligent image quality"
Digital Back: File Size
RAW file compression (large): 40MB
RAW file compression (small): 26MB
Digital Back: ISO
50-800 ISO sensitivity
Digital Back: Dynamic Range
12.5 f/stops
Digital Back: Exposure Time
1/10,000 - 60 seconds
Digital Back: Color Depth
16-bit (65,536 levels per channel)
Digital Back: Color Management System
A range of factory ICC profiles, plus optional ability for users to create custom camera profiles
Digital Back: Images
Viewing: Preview up to 12 images on one LCD screen
Up to 400% zoom
Measuring tools: Spirit Level, ISO, WB, histogram, exposure alarms, image rating, 645DF custom functions
Live View on LCD
Digital Back: Connection
FireWire 800, USB 3.0, USB 2.0
Leaf Credo: LCD
3.2", bright 1.15" MP touch screen with 170deg. viewing angle
Digital Back: Software Requirements
Capture One 6.4 or higher
Apple Mac: Core Duo 2 or higher, 4GB or more, 10.6 or higher
Windows: Core Duo 2 or higher, 4GB or more, Windows 7 or higher
Digital Back: Storage
Compact Flash UDMA 6 cards and high volume portable FireWire disks.
Digital Back: Languages
English, Chinese, German, French, Spanish, Italian and Japanese
Digital Back: Operating Environment
Temperature: 32 to 104deg.F / 0 to 40deg.C
Humidity: 15%-80% (non-condensing)
Digital Back: Power Supply
2,900 mAh rechargeable Li-ion
Digital Back: Output image dimensions
300 dpi: 61.90x46.40cm (24.37x18.26")
600 dpi: 30.10x23.20cm (11.85x9.13")
Camera Body: Type
6 x 4.5cm format
Electronically controlled focal-plane shutter
TTL multiple mode AE
AF single lens reflex camera for digital backs
Camera Body: Image Size
56 x 41.5mm (actual image)
Camera Body: Lens Mount
Mamiya 645 AF Mount, compatible with M645 Mount (manual focus confirmation, focus aid, stopped-down exposure metering)
Camera Body: Shutter
Both the shutter speed and the aperture level can be set to 1/3 or speed and aperture 1/2 using the electronic dial lock function
AE 30 to 1/4000 sec. (1/8 step), manual 30 to 1/4000 sec. (1/2 or 1/3 steps), 1 min-60 sec. (1 step), X, bulb (Bulb, electronically controlled), Time, shutter curtain protection mechanism
Camera Body: Shutter Release
Utilizes standard screw-in type cable release located on shutter button
Remote-Control Terminal: Located on the side of the body
Electromagnetic Cable Release RE401 is 5m and oiled
Electromagnetic Cable Release RE402 is 1m and is straight
Camera Body: Self Timer
With shutter release mode selector 2 to 60sec. (default setting: 10sec., can be set in 1sec. steps between 2 and 10sec. and in 10sec steps between 10 and 60sec.)
Camera Body: Flash Synchronization
X contact point, 1/125 second (focal plane), 1/800 or 1/1600 second (leaf shutter)
Camera Body: Exposure Metering
Aperture-priority AE, shutter-priority AE, programmed AE (PH, PL setting possible) and manual
TTL metering, center-weighted average (AV), spot (S) and variable ratio (A-S auto)
Camera Body: Exposure Bracketing
Enabled with Auto-Bracketing button (2 or 3 frames selectable), 0.3, 05, 0.7, 1EV step units selectable
Camera Body: Exposure Compensation
Expandable to ±5 EV
Camera Body: Depth-of-Field Preview
Preview Button on body
Camera Body: Viewfinder
Fixed prism viewfinder magnification x0.71; built-in diopter adjustment (-2.5 to +0.5, optional diopter correction lenses provide adjustment ranges of -5 to -2 diopter and 0 to +3 diopter); built-in eye-piece shutter
Camera Body: Viewfinder Info
Focus mark, defocus mark, warning mark, aperture value, shutter speed, metering mode (A, S, A/S), exposure compensation value (difference between set value and metered value) and flash ready/OK lamp with TTL Metz connection.
Camera Body: Focusing System
TTL phase difference detection method; sensor: CC D line sensor (I+I type); operating range: EV0 to EV18 (ISO 100)
Camera Body: Power Source
6 AA-size batteries (alkaline-magnesium, lithium, nickel-hydride or nickel-cadmium rechargeable batteries)
Camera Body: Custom Functions
19 items
Lens: Focal Length
Lens: Aperture
Maximum: f/2.8
Minimum: f/22
Lens: Camera Mount Type
Mamiya M645 Mount
Lens: Format Compatibility
Digital Medium Format Sensor
Lens: Angle of View
Lens: Minimum Focus Distance
27.6" (70.10cm)
Lens: Magnification
Lens: Maximum Reproduction Ratio
Lens: Groups/Elements
Lens: Image Stabilization
Lens: Autofocus
Lens: Tripod Collar
Lens: Flash Synchronization
Shutter speed up to 1/1600
Lens: Exposure Control
1/800 - 1 sec
Lens: Filter Thread
Digital Back: 3.80x3.15x2.40" (9.65x8.00x6.09cm)
Camera Body: 6.00x5.00x6.00" (15.24x12.70x15.24cm)
Lens: 2.03x3.17" (5.15x8.05cm)
Digital Back: 1.23lbs (0.55kg)
Camera Body: 2.3lbs (1.04kg)
Lens: 15.87oz (449.90g)
Mfr #

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Questions about this item:

Jesus G  When it comes to focal length equivalents, how much does it change depending on which digital back you use? Since all 3 have different-sized sensors (although the 60 and 80 are not that different) how much would the focal length be on these lenses: 28mm, 80mm, 110mm and 150mm. If anyone could answer these accurately I'd be grateful.
Jesus G  Just found a Mamiya catalogue showing that focal lengths change depending on the sensor you use. Look up the Mamiya DM System Catalogue and it gives examples And some are quite dramatic the changes especially with a 44x33 sensor
Andrew R  What Mamiya is showing there is the rough equivalent. The focal length itself doesn't change, only the angle of view. The catalog states (in part) "Equivalent focal length to 645 format (48x36mm CCD)" for example. So what they're really saying is that the the 48x36 sensor has (roughly) a 1.3(ish)x crop factor thus giving their 55mm lens an angle of view equivalent to a 64mm lens. The 44x33 sensor seems more dramatic because it's smaller, hence it has a bigger crop factor and a narrower equivalent angle of view. What they're basing their ratio's on is what the lens was originally designed for, in this case a format that gives a 6cm X 4.5cm image on film (i.e., 645).
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