Sony's first full-frame DSLR — 24.6MP with A-mount and in-body SteadyShot.
The Sony Alpha A900 was released approximately 2008 as Sony's first full-frame DSLR in the Alpha system, featuring a 24.6MP full-frame CMOS sensor. Positioned as Sony's professional-grade camera competing directly with the Nikon D3 and Canon EOS 5D Mark II at launch. Sony A mount.
24.6MP full-frame CMOS sensor. ISO 200-6400 (native). 5fps continuous shooting. Optical viewfinder (full-frame pentaprism, 100% coverage). SteadyShot Inside (5-axis IBIS). 3-inch LCD. At approximately 895g. Sony A mount.
The A900's SteadyShot Inside IBIS was a key advantage over Canon and Nikon full-frame DSLRs of the era, which relied on in-lens stabilisation. The 24.6MP resolution matched the Canon 5D Mark II at a similar price point at launch. High-ISO performance is limited by 2008 standards at ISO 3200+.
On the used market the Sony A900 is a vintage full-frame professional DSLR of historical significance. Condition checks: shutter actuation count (rated 150,000), sensor for dust, SteadyShot function, battery health (NP-FM500H). Sony A mount — compatible with Minolta AF lenses.