cberry
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Senior Member
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Posts: 1,127
Versatile lens highly recommended for first prime.
3
Any review of the 85mm f/1.8 seems to concentrate on it's abilities on full frame and shooting wide open. For this review, I'm going to look at the lens from a different perspective - that of a crop sensor owner.
Most times, you'll see the 50mm f/1.8 recommended as a first prime for a crop sensor owner. Honestly, while the image sharpness of the nifty fifty can be nothing short of amazing, the drawbacks that go with it are quite frankly not worth the frustration that go with it. I think that the 85mm should take it's place.
It's a cheaper canon lens, exceptionally well built, very fast aperture, very fast focus.
Purpose: 135mm equivalent which is a long portrait, short tele, tack sharp stopped down, very nice OOF areas
MFA adjust: on this 12 year old copy, I had to add +12-+14 to compensate for the shift. Canon will calibrate this lens so MFA is not (as) needed.
Portraits: You're looking at head and shoulder shots - unless you have a LOT of distance. the sweet spot is at about f/4 but remember this is an 85mm lens so that's 21.25mm of aperture. that's about the same as a 50mm @ f/2.4. To me, the combination of magnification and softer OOF falloff at f/4 with this lens is ideal.
Sports: Touted as an indoor sports lens, because of the higher resolution, you can even crop it further without bemoaning quality loss. I used it today at a swimming gala and did not miss the extra focal length of my 18-135mm STM. With kids, you've got an ideal outdoor sports lens at 5-10m.

Street/candids: at 5-10m again it gives you just enough distance to stay out of trouble but the magnification for great detail.

Conclusion:
While I can see the 50mm f/1.4 which I own as being a great portrait lens, the 85mm has a place in my bag more for sports. It's more consistent than the 50mm but given the choice, I'd probably look at the 100mm f/2 lens instead but have yet to put this through the paces.
As a fast aperture quick focusing tele, I think it beats that 50mm f/1.8 and f/1.4 in terms of consistency and results quality by a country mile. The only thing missing is IS but the price more than makes up for it.