Sony a7 Mirrorless Camera Body, Black {24.3MP}

Sony a7: the original full-frame mirrorless, proven at 24MP.

The Sony a7 put a 35.8 x 23.9mm full-frame CMOS sensor into a body measuring just 127 x 94 x 48mm, a genuinely small package for a genuinely large sensor. The 24MP output pairs with Sony's Bionz X processor, which applies area-specific noise reduction by distinguishing between smooth tones, textured detail, and subject edges than treating the frame as a single plane. ISO runs from 100 to 25600, with expansion down to ISO 50 for controlled-light work. The 117-point hybrid AF system, combining phase and contrast detection, drives 5 fps continuous shooting with autofocus active, a meaningful edge over the contrast-only a7R sibling.

The EVF deserves attention. It's a 2,359,000-dot OLED unit with 100% coverage and 0.71x magnification, backed by a three-element optical system that keeps aberrations out of the corners. That kind of eyepiece clarity matters when you're manually focusing legacy glass or checking critical exposure in bright sun. For video, the a7 records 1080/60p in AVCHD or MPEG-4, outputs uncompressed footage over micro-HDMI, and provides both a 3.5mm microphone jack and a headphone port for monitored audio, with XLR support available via adapter. The weather-sealed magnesium alloy body adds a layer of durability that the entry-level competition of its era didn't offer. For a full-frame shooting experience at a fraction of what this cost at launch, the a7 holds up.

Who It's For

Travel and street photographers working with a shallow bag will appreciate the a7's full-frame output in a body under 475g. Photographers with a collection of A-mount or legacy glass can run those lenses via adapter, using the hybrid AF system or manual focus aided by the high-resolution EVF. Documentary and editorial shooters get an usable video platform with dedicated audio ports and uncompressed HDMI output. Landscape photographers working from a tripod can extract genuine detail from the 24MP sensor across its full ISO 100 base, with RAW capture giving clean latitude in post.

Key Features

• 24MP full-frame CMOS sensor with Bionz X processor
• 117-point hybrid AF system with phase and contrast detection
• 5 fps continuous shooting with active autofocus
• 2,359,000-dot OLED viewfinder with 100% coverage
• 1080/60p video with uncompressed HDMI output and XLR adapter support
• ISO 100-25600 (expandable to ISO 50)
• 3-inch tilting LCD monitor with 1,230,000 dots
• Weather-sealed magnesium alloy body with Sony E-mount

FAQ

Does the a7 work with existing Sony E-mount lenses?

Yes, but with caveats. APS-C E-mount lenses will physically fit but won't cover the full frame-you'll get vignetting or can enable APS-C crop mode (drops to 10MP). For full-frame coverage, you need Sony's FE-series lenses or A-mount lenses with an adapter (LA-EA3 or LA-EA4 required for full-frame sensor coverage).

What's the autofocus system like compared to the a7R?

The a7's 117-point hybrid AF system combines phase and contrast detection, which gives it faster autofocus and better tracking than the a7R's contrast-detect-only setup. That's why the a7 hits 5 fps with continuous AF while the a7R can't match that speed.

Can I output video uncompressed?

Yes. The micro-HDMI port outputs uncompressed video, which is useful if you're capturing to an external recorder. The camera also records internally at 1080/60p in AVCHD or MPEG-4 format.

What's the electronic viewfinder actually like?

The 2,359,000-dot OLED EVF is backed by a three-element optical system that keeps corners sharp and aberration-free-it's genuinely one of the best viewfinders of its generation. 100% coverage and 0.71x magnification give you a clear, corner-to-corner view for manual focus or exposure checking.

Is this camera weather-sealed?

The magnesium alloy body is environmentally sealed, giving it durability that entry-level competitors didn't offer at launch. It's not sealed to professional sports-camera levels, but it handles weather better than most mirrorless bodies of its era.

How long does the battery last?

Sony rates it at 340 shots per charge (CIPA). The camera charges via USB, which is slow-investing in an external charger (BC-VW1 or BC-TRW) is smart if you plan extended shooting.

Can I use this for serious video work?

It records 1080/60p with manual exposure control, stereo mic and headphone ports, and uncompressed HDMI output. XLR audio support is available via adapter. Those are professional-adjacent features, though 1080p is the ceiling-no 4K.