Sigma SD Quattro Digital Camera with 30mm F1.4 DC HSM

Product Information

but show me its great quality of image from other cameras offering same or similar size sensors made by non-Sigma sensor makers!

No idea where you found "terrible chroma detail". Sure, if you pixel-peep the DNGs, then yes, you can see the flaws that are typical to how foveon sensors work, but no observer is going to do that. As far as my eyes tell me - the detail is just fine. Not the "amazing" kind of fine, but more than usable. Combine that with spacial detail, and the results are quite amazing. Okay, enough with the caveats. Opening these DNG files in Adobe Camera Raw is an almost surreal experience. You still get the absolutely astounding crystalline sharpness Sigma's cameras are known for, but now you can make any adjustment you'd ordinarily make to a Raw file, and with a decently powerful computer, it all happens in real time. No more making a small adjustment and waiting ten seconds (or thirty) for a full re-render. The Sigma sd Quattro H offers a full range of advanced exposure controls via the Mode button on the rear of the camera, including aperture-priority, shutter-priority, manual and manual focusing, with three Custom modes so that you can save and recall your preferred settings. There are no auto-everything or scene modes on this camera, which is a veritable breath of fresh air at a time when most manufacturers are stuffing their cameras full of clever technologies that take control away from the user. The aperture or shutter speed are set by using the forefinger-operated control dial on top of the camera which encircles the shutter button, with a smaller rear control dial setting the aperture in the Manual shooting mode and exposure compensation in the other modes. points select mode, Free move mode (It is possible to change the size of Focus Frame to Spot, Regular and Large), Face Detection AF Mode This isn’t to suggest that either
is wildly unreliable – indeed, most times the sd Quattro gives nicely judged, attractive images. But it’s less consistent than some if its peers and can be prone to over-neutralising atmospheric lighting such as warm evening sunlight.As well as the innovative sensor which I’ll get to in a moment, the SD Quattro maintains the Sigma DSLR tradition of having a removable IR cut filter. You simply take it out with tweezers. For the price I would definitely consider this camera as my main landscape shooter if I didn't already have a better (and waaaay more expensive) option. Sure, it's not even close to Pentax K1, it's silly to claim otherwise, but it's still a very interesting choice. The grip is comfortable and makes all-day use easy. While not cupped in like some DSLR cameras, it has enough surface for a solid grip. P) Program AE (Program Shift is possible), (S) Shutter Speed Priority AE, (A) Aperture Priority AE, (M) Manual

I found the body pretty comfortable to hold, despite its weight and I was able to shoot sharp images a long way below 1/equivalent focal length, suggesting I had a fairly stable grip on the camera. The two main dials are well placed, meaning it was easy to set the aperture and exposure compensation. You can see the output from the Sigma is significantly sharper and contains a lot more fine details than the output from the Nikon. I have not normalised (i.e. resized) the output from the Sigma to match the lower resolution Nikon (when does a 36MP camera become a lower resolution camera!??). So if I resize the 39MP JPG from the Sigma down to 36MP, Sigma’s per-pixel sharpness would be even better. However, the camera does have a Focus Peaking option which allows live view focusing with a digital zoom for accomplishing precision focus in manual focus mode.

Film-like response

The Sigma sd Quattro H camera is a unique-looking, mirrorless camera with a unique sensor capable of producing sometimes astonishingly crisp images. The technology involved means this camera is not the first choice for everyone, but should certainly be under consideration by landscape, portrait, architectural and lifestyle photographers. The main menu system on the Sigma sd Quattro H, accessed by pressing the Menu button above the navigation pad, is rather rudimentary but simple to use. There are three tabs along the top, Camera, Play and Settings, subdivided into 6, 2 and 5 screens of options respectively. Due to the large LCD screen and restricting the number of on-screen choices to 5, the various options and icons are quite clear and legible, and each option uses a combination of text and helpful small icon.