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 | |
| Company type | Division of Phase One[1] |
|---|---|
| Industry | Digital imaging |
| Founded | Massachusetts, USA (1991) |
| Headquarters | Kfar Saba, Israel |
| Products | Digital backs |
Leaf is an Israeli company that manufactures high-end digital backs for medium format and large format cameras. It was previously a division of Scitex and later Kodak, and is now a subsidiary of Phase One. In 1991, Leaf introduced the first medium format digital camera back, the Leaf DCB1, nicknamed ‘The Brick’, which had a resolution of 4 million pixels (4 megapixels). As of 2012, Leaf produces the Credo line of digital camera backs, ranging from 40 to 80 megapixels. Until 2010, Leaf also produced photography workflow software Leaf Capture.
Products
Digital camera backs
After Leaf's DCB, the digital backs evolved into two product lines, the Aptus and the (now discontinued) Valeo. The main difference is that the Aptus models have a 3.5-inch touchscreen, where the Valeos have no on-board display. The Valeos can still be used untethered by using the DP-67 software or the more recent WiView software on a Compaq iPAQ. The iPAQs are connected via Bluetooth with the digital backs. For untethered usage, you will need battery packs for both the Aptus and the Valeo, otherwise the back must be powered via a FireWire connection to a computer. The Valeo models need a Leaf Digital Magazine as well for untethered use, where the Aptus models have a Compact Flash slot.[citation needed]
Current models
Credo is the current generation of digital camera backs from Leaf, and the first Leaf back based on Phase One platform and not Leaf legacy platforms. Some of the changes are that the back no longer has a cooling fan, but instead makes use of passive cooling. Also to be noted is the new hi res capacitive touch screen which no longer require stylus pen. The back also boots in one second with Phase One OS. Previous Windows CE operating system took up to 10 seconds to reboot.
The differences between Credo and Aptus II:
- Interface: Credo has both FW800 and USB3 interfaces. Aptus II has only FW800 interface. Aptus uses a proprietary L-shaped FW connector, while Credo uses a straight regular connector. Thick head connectors will not fit into either backs. Credo uses standard USB3 type B connector and standard cables may be used. Officially only 3 meter USB3 cables are supported, but 5 and 7.5 meters were tested and worked with repeaters. FW cables in Credo and Aptus are supported up to 10 meters.
- Battery: Credo uses an internal battery, and Aptus uses an external battery. Credo can't operate without a charged battery inside it. When Aptus is tethered it can work only without battery, as the battery port and cable port are overlapping. The Credo battery is charged when using powered FW800, but not when using USB. It is possible to use low powered Windows tablets to tether Credo, while Aptus generally requires tethering to a laptop which has a FW port that is powered from AC. Aptus can load a double capacity and size battery, which Credo can't, since the battery goes into a slot in the Credo body.
- Screen: Credo has a smaller screen but with more resolution. Credo has capacitive touch screen (more sensitive like current smart phones), and Aptus has a resistive touch screen (less sensitive, like older PDAs)
- Connection protocols: Credo is much faster to connect in tethering than Aptus, and establishes a more stable connection.
- Colors: Credo colors are more accurate and less punchy and unique than Aptus colors.
- Sensitivity - Credo is 1/3 stop more sensitive to light than Aptus, using the same ISO settings.
- Body compatibility: Aptus can work on all 645 Mamiya models from AFD and upwards. Credo requires 645DF and upwards, and can work with 645AFD III only when version 1 of the firmware is installed on it. Interfacing to non Mamiya 645 bodies, such a RZ67, HY6, Hasselblad H/V, Contax, tech cameras is unchanged from Aptus.
- Long exposures: Credo can do much longer exposures than Aptus with acceptable noise.
- Noise: Credo has slightly less noise in high ISO than Aptus in normal length exposures.
- File format: Credo produces IIQ files same as Phase One backs. There are two types of files: large and small. Large has no compression and small has some compression and about half the size. The "Large" files can be opened by Adobe Photoshop and Lightroom. IIQ files are not compatible with Leaf Capture.
- Live view: Credo has live view on the back's screen - Aptus has live view only on tethered computer. Since both live views are CCD based, they are significantly inferior to live views on current CMOS sensors.
- All ports in the Credo body are covered ("weather sealed").
- Credo body is made of metal, Aptus has plastic/metal combination. Credo has a metal heatsink, while Aptus has a cooling fan, which makes some noise and can make the back freeze in icy winds.
- Aptus has a detachable LCD protector cover which Credo does not have.
- Turning on/off: Tethered Aptus automatically turns on when the computer is turned on, and autocratically turns off when the computer is turned off. Credo must be turned on and off manually, and also turns off automatically after a period of idle time.
| Model | Sensor Size | Resolution | Active Pixels | ISO range | Dynamic range | Frames per Second | Lens conversion factor | Display | Storage | Host Connection | Released |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Credo 50 | 44 x 33 mm | 50 MP, 16 bit | 8280 x 6208 | 100-6400 | 14 f-stops | 1.2 | 1.25 | 3.2-inch 1.5-megapixel Retina-type multi touchscreen | CF up to UDMA 6 | IEE1394b FireWire 800 and USB3 | 2014 |
| Credo 80 | 53.7 x 40.4 mm | 80 MP, 16 bit | 10328 x 7760 | 35–800 | 12.5 f-stops | 0.7 | 1.0 | 2012 | |||
| Credo 60 | 53.9 x 40.4 mm | 60.5 MP, 16 bit | 8984 x 6732 | 50–800 | 12.5 f-stops | 1.0 | 1.0 | 2012 | |||
| Credo 40 | 43.9 x 32.9 mm, | 40 MP, 16 bit | 7320 x 5484 | 50–800 | 12.5 f-stops | 1.2 | 1.25 | 2012 |
Aptus II models are very similar to corresponding previous Aptus models, with the notable differences:
- Live view available with Phase One 645AF and 645DF bodies (+ Mamiya AFD III & DF), no dongle required. Live view is available on Capture One with large format bodies for legacy Aptus 22 and up, Live View dongle is no longer required.
- Camera controls (aperture, shutter speed and shutter release) on Phase One 645AF and 645DF bodies (+ Mamiya AFD III & DF)
- Faster shooting speed, shot-to-shot and faster transmission to tethered computer
- FireWire 800 connection replaces FireWire 400
- Slightly different color response
The following table shows the models which Leaf still shows on their website as current models.[2][3][4]
| Model | Released | Sensor Size | Resolution | Active Pixels | ISO range | Dynamic range
(f-stops) |
Seconds/Frame | Lens conversion factor | Display | Storage | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Aptus-II 12R | 2010 | 53.7x40.3 mm | 80 MP, 16-bit | 10320 x 7752 | 80-800 | 12 | 1.5 | 1.0 | 3.5-inch touchscreen | FireWire, CF | Rotating sensor |
| Aptus-II 12 | 2010 | 53.7x40.3 mm | 80 MP, 16-bit | 10320 x 7752 | 80-800 | 12 | 1.5 | 1.0 | 3.5-inch touchscreen | FireWire, CF | |
| Aptus-II 8 | 2010 | 44x33 mm | 40 MP, 16-bit | 7360 x 5562 | 80-800 | 12 | .8 | 1.3 | 3.5-inch touchscreen | FireWire, CF | |
| Aptus-II 7 | 2009 | 48x36 mm | 33 MP, 16-bit | 6726 x 5040 | 50-800 | 12 | 1.1 | 1.1 | 3.5-inch touchscreen | FireWire, CF | |
| Aptus-II 5 | 2009 | 48x36 mm | 22 MP, 16-bit | 5356 x 4056 | 25-400 | 12 | .9 | 1.1 | 3.5-inch touchscreen | FireWire, CF |
Discontinued Models
| Model | Released | Sensor Size | Resolution | Active Pixels | ISO range | Dynamic range (f-stops) | Seconds/Frame | Lens conversion factor | Display | Storage | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Aptus-II 10R | 2010 | 56x36 mm | 56 MP, 16-bit | 9288 x 6000 | 80-800 | 12 | 1 | 1.0 | 3.5-inch touchscreen | FireWire, CF | Rotating sensor |
| Aptus-II 10 | 2010 | 56x36 mm | 56 MP, 16-bit | 9288 x 6000 | 80-800 | 12 | 1 | 1.0 | 3.5-inch touchscreen | FireWire, CF | |
| Afi-II 10 | 2008 | 56x36 mm | 56 MP, 16-bit | 9288 x 6000 | 50-800 | 12 | 1 | 3.5-inch Tilt touchscreen | FireWire, CF, Digital Magazine | ||
| Afi-II 7 | 2008 | 48x36 mm | 33 MP, 16-bit | 6726 x 5040 | 50-800 | 12 | 1.1 | 3.5-inch Tilt touchscreen | FireWire, CF, Digital Magazine | ||
| Aptus-II 6 | 2009 | 44x33 mm | 28 MP, 16-bit | 6144 x 4622 | 50-800 | 12 | 1 | 1.3 | 3.5-inch touchscreen | FireWire, CF | |
| Afi-II 6 | 2008 | 44x33 mm | 28 MP, 16-bit | 6144 x 4622 | 50-800 | 12 | 1 | 3.5-inch Tilt touchscreen | FireWire, CF, Digital Magazine | ||
| Afi 7 | 2007 | 48x36 mm | 33 MP | 6726 x 5040 | 50-800 | 12 | 3.5-inch touchscreen | ||||
| Afi 6 | 2007 | 44x33 mm | 28 MP | 6144 x 4622 | 50-800 | 12 | 3.5-inch touchscreen | ||||
| Afi 5 | 2007 | 48x36 mm | 22 MP | 4056 x 5356 | 25-400 | 12 | 3.5-inch touchscreen | ||||
| Aptus 75s | 2006 | 48x36 mm | 33 MP | 6726 x 5040 | 50-800 | 12 | 1.2, unlimited burst | 3.5-inch touchscreen | FireWire, CF, Digital Magazine | ||
| Aptus 65s | 2006 | 44x33 mm | 28 MP | 6144 x 4622 | 50-800 | 12 | 1, unlimited burst | 3.5-inch touchscreen | FireWire, CF, Digital Magazine | ||
| Aptus 54s | 2006 | 48x36 mm | 22 MP | 4056 x 5356 | 25-400 | 12 | .87, unlimited burst | 3.5-inch touchscreen | FireWire, CF, Digital Magazine | ||
| Aptus 75 | 2005 | 48x36 mm | 33 MP | 6726 x 5040 | 50-800 | 12 | 1.7, 5 frames burst | 3.5-inch touchscreen | FireWire, CF, Digital Magazine | ||
| Aptus 65 | 2005 | 44x33 mm | 28 MP | 6144 x 4622 | 50-800 | 12 | 1.5, 6 frames burst | 3.5-inch touchscreen | FireWire, CF, Digital Magazine | ||
| Aptus 22 | 2005 | 48 x 36 mm | 22 MP, 16-bit | 4056 x 5356 | 25-400 | 12 | .9, no burst | 1.1 | 3.5-inch touchscreen | FireWire, CF, Digital Magazine | Bluetooth |
| Aptus 17 | 2005 | 43 x 32 mm | 17 MP, 16-bit | Zdroj:https://en.wikipedia.org?pojem=Leaf_(Israeli_company)