 | | General |
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| Name | Sony Alpha DSLR-A900
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| Mount type | A-mount
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| Supported lenses | classic, xi, SSM, SAM, (D), DT
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| Release year | 2008
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| Status | discontinued
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| Digital parameters |
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| Output resolution [pixels] | 6048×4032, 4400×2936, 3024×2016, 3984×2656 (APS-C), 2896×1928 (APS-C), 1984×1320 (APS-C)
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| Output resolution (16:9) [pixels] | 6048×3048, 4400×2472, 3024×1704
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| Output resolution (panorama) [pixels] | –
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| Output resolution (3D panorama) [pixels] | –
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| Effective output pixels | 24.4 M
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| Sensor type | CMOS, Bayer pattern, 12-bit ADC
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| Sensor size [mm] (crop factor) | 35.9×24 (1×)
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| ISO range | auto (200–1600; conf.), 100–6400 (1/3 stops)
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| Color and post-processing |
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| Color spaces | sRGB, Adobe RGB
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| Image parameters | contrast, saturation, sharpness, brightness (-3 – +3), zone matching (-1 – +2)
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| Creative styles | standard, vivid, neutral, clear, deep, light, portrait, landscape, sunset, night view, autumn leaves, B/W, sepia
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| Picture effects | –
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| Picture parameters | –
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| Gamma settings | –
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| Picture profiles | –
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| Soft skin effect | –
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| White balance | auto, daylight, shade, cloudy, tungsten, fluorescent, flash, direct entry, custom (3 registers)
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| Color temperature range [K] | 2500–9900
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| Color temperature increments [K] | 100
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| Color compensation index [steps] | ± 9 (G/M)
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| White-balance bracketing [pictures per shot] (steps [mired]) | 3 (10; 20)
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| Noise reduction | long exp. (>1s), high-ISO (3 levels; off)
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| D-range optimizer | standard, advanced auto, manual (5 levels)
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| DRO bracketing [pictures per shot] (levels) | 3 (2 levels)
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| Auto HDR | –
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| Lens compensation | –
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| Movie recording |
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| Movie resolutions [size/fps] | –
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| Movie ISO range | –
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| Shutter speed (movie) [s] | –
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| Movie formats | –
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| Audio formats | –
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| Movie length | –
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| Microphone | –
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| Audio monitoring | –
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| Movie features | –
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| Auto-focus |
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| AF sensors | 8 line, 1 double cross, 10 assist
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| AF range [EV] | 0 – 18
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| AF modes | AF-A, AF-S, AF-C, DMF
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| AF range limiter | no
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| AF assist light | yes
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| AF adjustment [no. of lenses] | 30
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| AF bracketing [step width] ([number of shots]) | - (-)
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| Features |
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| Eye-start | no
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| Anti-Shake/Super Steady Shot | yes
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| Remote control via USB/WiFi | yes
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| Other features | top LCD, viewfinder shutter, intelligent preview, DT auto crop
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| Metering |
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| Metering modes | 40 segments, center-weighted, spot (2.2%)
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| Metering range [EV] (with spot) | 0 – 20 (2 – 20)
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| Auto Exposure Lock button | yes
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| Exposure modes | Auto, P with shift, A, S, M with shift
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| Subject programs | 3 preset modes
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| Exposure compensation [stops] (steps [stops]) | ± 5 (1/2), ± 5 (1/3)
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| Zebra | no
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| Flash |
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| Flash shoe type | iISO
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| Accessory shoe cap | FA-SHC1AM
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| Flash modes | normal, rear sync, slow sync
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| Flash metering | 40S-TTL (pre-flash only), ADI
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| Requires D flash unit | yes
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| Flash guide number [m]/ coverage [mm] | -/-
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| X-Sync speed [s] | 1/250 (1/200 w/ SSS)
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| High Speed Sync | yes
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| Wireless flash | yes (only w/ separate controller)
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| Wireless x-sync speed [s] | 1/250 (1/200 w/ SSS)
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| Wireless HSS | yes
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| Ratio flash control | yes
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| Flash exposure compensation [stops] (steps [stops]) | ± 3 (1/2), ± 3 (1/3)
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| Studio flash socket | yes
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| Flash Exposure Level lock | no
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| Viewfinder |
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| Viewfinder type | pentaprism
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| Viewfinder resolution [pixels] | –
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| Viewfinder coverage | 100%
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| Viewfinder magnification | 0.74×
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| Eye relief [mm]/ from frame [mm] | 20.0/unknown
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| Screens | G (default), M, L
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| Diopter adjustment [diopters] | -3.0 – +1.0
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| Eyepiece cup | FDA-EP4AM
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| Viewfinder accessory compatible | yes
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| Live View | –
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| Live View zoom | –
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| AS/SS scale in viewfinder | yes
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| Display |
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| Display technology, size [mm/inches], resolution [dots] | TFT, 3″, 921600
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| Display mount | fixed
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| Histogram display | luminance, RGB
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| Automatic brightness | no
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| Touch screen | no
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| Video output interfaces | HDMI-Mini (1080i/720p/ 580p/576p)
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| Display accessories (opt.) | screen protector PCK-LS4AM, screen protector PCK-LH4AM
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| Shooting |
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| Frame rate [fps] | 5, 3
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| Frame rate with AF [fps] | 5.0
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| Frame rate with live view [fps] | –
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| Shutter speed (still) [s] | 30 – 1/8000, B
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| Shutter type | mech.
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| Self-timer [s] | 10, 2 (w/ mirror pre-fire)
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| Continuous self-timer [shots] | –
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| Bracketing frames (stops) | 3, 5 (1/3, 1/2, 2/3), 3 (2, 3)
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| Remote release socket | Minolta/Sony 3-pin
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| Wireless remote release | RMT-DSLR1, RMT-DSLR2, RMT-VP1
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| Release priority | yes
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| Depth of field preview | yes
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| Aperture can be changed during depth of field preview | yes
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| Silent depth of field preview | yes
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| Storage |
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| Storage media (number of slots) | CompactFlash I/II (UDMA), Microdrive, Memory Stick Duo, PRO Duo, PRO-HG Duo (2)
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| Remote storage via USB | yes
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| Remote storage via FTP | no
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| File system formats | FAT12, FAT16, FAT32
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| File formats | ARW 2.1, JPEG w/ EXIF 2.21
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| Power |
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| Batteries | 1× NP-FM500H
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| Battery pack | –
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| Vertical grip | VG-C90AM (1×/2× NP-FM500H)
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| External power supply | AC adaptor AC-VQ900AM, AC adaptor AC-PW10AM
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| Construction and accessories |
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| Weather sealing | yes
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| Mount material | steel
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| Weight [g] | 850
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| Standard accessories | strap, body cap ALC-B55, accessory shoe cap FA-SHC1AM, USB cable, TV cable, remote control RMT-DSLR1, battery NP-FM500H, charger BC-VM10, software
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| Other optional accessories | –
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| Misc |
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| Other interfaces | USB 2.0 (High Speed)
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| USB modes | mass storage, remote control/storage, PTP/PictBridge
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| Printing | Exif Print, Print Image Matching Ⅲ
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| Latest firmware version (release date) | 2.00 (12/2010)
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| Comments | –
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| Reviews & links | Imaging Resource (full review), Simon Joinson on DPReview (full review)
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| Related cameras |
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| Kits | – |
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