Reviews written by Pavel Janicek

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Pavel Janicek
www.juzaphoto.com/p/PavelJanicek

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Reviews of cameras, lenses, tripods, heads and other accessories written by Pavel Janicek

The following opinions have been automatically translated with Microsoft Translator.

Sigma SD Quattro

Pros: Colors and image cleanup

Cons: Slow focus, insufficient crosshair resolution

Opinion: I bought a Sigma SD Quattro because it allows instant replication of the optical image and observation of this replica with an eye isolated from the environment (1) and I bought it because it is equipped with a Foveon sensor, which offers the possibility of a recording high-quality electronics thanks to its unique design (2). I've been working with the device since it was launched in 2017 and I have to say that the mirror replica doesn't have enough resolution to focus the lens with the naked eye. Focus is only possible by activating autofocus that works well but very slowly. Momentary capture of the image is therefore difficult. As for the second reason why I purchased the Sigma SD Quattro, I can say that the sensor is really outstanding. When working at 100 ISOs, the sensor is able to take better advantage of the quality of the lens, especially in terms of detailed resolution. When set to a higher sensitivity, the recording quality of the Foveon Quattro sensor is similar to that of Bayer's sensors, which easily exceed its foveon rival with sensitivity above 400 ISOs. The Sigma SD Quattro was designed and built as a cul-de-sac. It only allows the use of Sigma SA lenses originally designed for the sigma SD1 Merrill corporate DSLR (2012). For Sigma SD1 Merrill, many high-quality corporate optics with an SA-specific bayonet graft have been left, but there will be no new ones. The SA attack has been abandoned and the imminent successor of the Sigma SD Quattro with the size of the FF sensor will already be equipped with a Leica attack.

sent on December 22, 2019