New Sigma Art 50-100 f/1.8 and Quattro Mirrorless

The New Sigma Sigma 50-100mm F1.8 DC HSM Art

Sigma sd Quattro and the Sigma sd Quattro II, mirrorless.

You have to hand it to Sigma for thinking outside the box, the new Sigma sd Quattro and the Sigma sd Quattro H, mirrorless cameras are definitely outside the box.

The Sigma Quattro SD: sd Quattro

• Two mode Autofocus system
• Mirrorless system, Dust & Splash magnesium alloy body
• Resolution equal to 39MP Bayer sensor on resolution testing
• Compact design similar to dp Quattro cameras
• SA mount

The Sigma SD Quattro H:

• Larger APS-H sensor
• Resolution equal to 51MP Bayer sensor on resolution testing
• Designed to take advantage of SGV lenses with great IQ
• SA mount

Sigma continues to drop excellent lenses on the market, especially for crop or APS-C cameras, something the big guys don't feel a need to do, they figure you'll buy there full frame lenses. This has left a gap that Sigma has smartly taken advantage of. Their highly respected line of ART lenses with their fast aperture and good quality optics. They are providing these smaller sensor cameras with the lenses they really need. This will really complement the 18-35 f1.8 DC HSM A , although with a slight gap.

Made for the following:

Micro Four Thirds, Sony E (NEX)
Canon EF-S, Nikon F (DX), Sigma SA Bayonet

Hands on with the Quattro here at DPReview

Why do Canon, Nikon and Sony not do this? My guess is they are more concerned with making lenses for upcoming mirrorless APS-C cameras and don't want to invest in high quality APS-C (DSLR) lenses, when their customers can use full frame lenses on the APS-C mount. I think whats going to happen here is, APS-C is going to go mirrorless and full frame will stay DSLR, at least for the near term.

 What does this mean? New lens mount for Canon and Nikon. There are issues with mounting their current lenses on mirrorless cameras, including, back spacing and telecentricity. So that means adapter or new mount. This, I believe is the real reason the big guys don't want to invest in more APS-C (DSLR) lenses.

Understanding Telecentricity:
Wikipedia
Opto Engineering

Sigma Lenses web site here

Ross

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