Review on Canon EF 40mm f/2.8 STM Lens - Fixed Black (6310B002) for US Cameras by Ar Bl Srivastava ᠌

I thought for a long time whether to buy this lens in addition to my EF 50 / 1.4 USM (I shoot on EOS 6D). Finally, I decided, because the gain in length by 2 times is relevant, for example, when skiing. As expected, the image quality of 40 mm is completely similar to the quality of fifty dollars on the corresponding apertures. That is, very high, even at F / 2.8. The lens is small, the camera fits even in small bags designed for large soap dishes. Focusing is quite fast, although ring-USM is faster on modern lenses. If you put on 3 macro rings (the issue price is about 5000), then the image scale becomes 1.9 - having spent very little money, we get a good macro lens for jewelry. There are also disadvantages. Firstly, a completely indistinct manual focus - due to focusing "by wire" there is no feedback, the ring always spins without the slightest effort. If the proboscis of the lens is extended outward, then to retract it, you need to turn on the camera. The focusing sound is quite audible, so it will get on the video soundtrack. (Of course, the STM is still head and shoulders above the old micro-motors in all respects.) The lens is also very popular at full frame, but on crop it is too wide for a portrait lens and too narrow for a "normal" lens. Overall, for a full frame, this is a great option to carry around all the time. Of course, the aperture is low for a fix, but this is more than offset by the price, dimensions and quality. I would advise crop lovers to wait for a 28 mm "pancake". I'm not going to sell fifty dollars (unless EF 50 / 1.8 IS USM comes out) - after all, 2 stops of aperture are not lying on the road.