Sigma Quattro H vs Sony A900

On this page, we will be looking at the Sigma Quattro H and Sony A900, one being a Advanced Mirrorless and the latter is a Advanced DSLR by companies Sigma and Sony. There exists a significant gap among the image resolutions of the Quattro H (45MP) and A900 (25MP) and the Quattro H (APS-H) and A900 (Full frame) offer totally different sensor measurements.

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The Quattro H was introduced 7 years later than the A900 and that is a fairly sizable gap as far as camera technology is concerned. Both cameras have different body design with the Sigma Quattro H being a Rangefinder-style mirrorless camera and the Sony A900 being a Mid-size SLR camera.

Before getting right into a thorough comparison, here is a simple introduction of how the Quattro H scores vs the A900 for portability, imaging, features and an overall rating.

Below is a preview of the gallery images for Sigma sd Quattro H and Sony Alpha DSLR-A900. The whole galleries are viewable at Sigma Quattro H Gallery and Sony A900 Gallery.

For anybody who is looking to carry your camera, you'll have to factor its weight and proportions. The Sigma Quattro H enjoys outer dimensions of 147mm x 95mm x 91mm (5.8" x 3.7" x 3.6") having a weight of n/a grams (0.00 lbs) whilst the Sony A900 has measurements of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") having a weight of 895 grams (1.97 lbs).

Check out the Sigma Quattro H and Sony A900 in the all new Camera and Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will differ depending on the lens you choose at the time. Underneath is a front view proportions comparison of the Quattro H and the A900.

Using dimensions and weight, the portability rating of the Quattro H and A900 is 78 and 54 respectively.

Quite often, it's difficult to visualise the gap in sensor sizing only by seeing a spec sheet. The visual below should give you a more clear sense of the sensor dimensions in the Quattro H and A900.

As you can see, the two cameras have different resolutions and different sensor sizing. The Quattro H with its smaller sensor will make getting shallow depth of field harder and the Sigma Quattro H will produce greater detail using its extra 20 Megapixels. Higher resolution will allow you to crop photographs a bit more aggressively. The newer Quattro H is going to have an edge when it comes to sensor technology.