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EF-M 2mm f/2 STM core specs:

• Moderate Wide-Angle Lens for EOS M
• Bright f/2 Lens Aperture
• Exceptional Low-Light Performance
• One Aspheric Lens Element
• Built-In Stepping Motor
• Smooth & Continuous AF
• Seven Blade Circular Aperture
• Short Minimum Focusing Distance of 5.9″

slrgear reviewed the Canon EF-M 22mm f/2 STM lens (price & specs), part of the Canon EOS M (price & specs) ecosystem. For the time being there are only two lenses for the EOS M system, the other one is the Canon EF-M 18-55mm f/3.5-5.6 IS STM(price & specs). I own this lens, and I have to say that I am overly satisfied by its performance, the featured review basically confirms my experience using the lens. Some excerpts:

• The Canon EF-M 22mm ƒ/2 STM provided surprisingly sharp results.[...] Stopping down to just ƒ/2.8 provides very sharp images – for practical purposes, we would say it’s tack-sharp from corner to corner.
• There is some significant corner shading with the 22mm ƒ/2: used at the ƒ/2 setting, the corners show up a full stop darker than the center of the frame.
• The 22mm ƒ/2 provides excellent resistance to distortion
• The lens, while not specifically built for macro, offers some usable close-up capability [max 0.21x]

In the conclusion they write:

For a small and relatively inexpensive lens, the Canon EF-M 22mm ƒ/2 STM provides an excellent result. Given the few options available [...] for Canon EOS-M users, having this prime lens as an option is a no-brainer.

The Canon EOS M with the EF-M 22mm f/2 STM is now sold for $679 on Amazon (click here), for $699 at B&H (click here) and Adorama (click here).

Canon EOS M price check: Amazon, B&H, Adorama, Canon USA, J&R, Digitalrev, eBay, rent it at Borrow Lenses
Canon EF-M 22mm f/2 STM price check: Amazon, B&H, Adorama, Canon USA, J&R, Digitalrev, eBay, rent it at Borrow Lenses
Canon EF-M 18-55mm f/3.5-5.6 IS STM price check: Amazon, B&H, Adorama, Canon USA, J&R, Digitalrev, eBay, rent it at Borrow Lenses

[via slrgear]