I like it. On the Canon ef-m, you may need to enable a setting in Custom Settings for the shutter to work without a lens being recognized. This is a 100% manual lens, so the camera doesn't "see" it. Focus peaking works, but the field of view is so short it's hard to see. This is a clear sharp lens. Very tele, but compact, ofk. At this length, I was still able to shoot some things handheld in low light outdoors at high ISOs. In low light I need a tripod. Still a great lens, but at 300mm you need a fairly fast shutter speed (1/125+) to avoid shake. The attached photo is a scaled (reduced) photo imported from the camera without any post-processing. Only JPG from raw CR3. Excellent color, no visible aberration. The lens comes with a hard plastic hood that is kept in place and can be used for the focus ring. Also comes with OK lens case and caps on both ends.
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