Why do you think everyone has to stop what they are doing to answer your specific questions?
Go and buy one and then put a week aside so you can try out every test that everyone demands you perform.
It costs next to nothing. Be realistic about it's capabilities. It's not an L lens.
The reason I'm asking is because I'm considering the t4i and both STM lenses. That's a $1400 investment, not $200. I want to know if that is the route to go because I have little kids and pets. There aren't any threads on the 18-135mm STM right now so I'm asking about the 40mm. And maybe $200 to me is a lot. Maybe to you it's not.
Also, the reason I asked the questions multiple times is because people were giving answers that did not answer the question. So I re-worded the questions to make sure I was being clear.
Nobody has to stop what they're doing to answer my questions. It's up to them. And, by the way, I've taken plenty of time with new equipment to post samples, examples, etc., in different forums over the years because I'm often one of those "know-nothing" early adopters.
Also, I already was berated and I already apologized so why do you feel the need to continue to pour it on?
I own the USM EF 50mm f/1.4 and it's slower than that. My guess is it's also slower than the nifty. This lens as I've become accustomed to it, is for quiet mellow focus for video and for people who like the compactness of a p-cake lens. I haven't owned the 1.8 but have shot it many times and can say I think the 1.8 is quicker. That said I don't think focal speed is this len's forte. I think this was gared to the quiet focusing video people and the pocket sized lens crowd.
Thanks for this useful information.
Making a wrong purchase of a 40/2.8 is more like the "investment" of a cinema visit with popcorn and something to drink.
Again, $200 to you may not be much, but to me it's significant. I guess I'm a pauper.
Hopefully, they can be less disappointed if they realize that the thread doesn't contain absolute answers but just gives a basic idea about the quality and usability of the lens, and that the final evaluation must be done by themselves if the lens sounds interesting enough.
This is good advice, but focusing speed is something that is not subjective. It can easily be measured. That's why I was asking for a comparison. I know I can focus and get action shots with the nifty fifty but it's a lot more difficult than it is with my USM lenses. Anything with slower focusing speed than the nifty fifty probably won't suit my needs (and I'm also thinking of the 18-135mm STM lens as well to replace my current kit lens). Because if these lenses can't even focus as fast as the very slow nifty fifty, then they'll really disappoint a lot of people who get them to replace their current kits. But interestingly enough, I recently learned that the 40mm and the 18-135mm STM lenses have completely different focusing motors. So my research of the 40mm may not be doing me much good anyway as my everyday lens would likely be the 18-135. http://www.usa.canon.com …y/Lens_Advantage_Perf#usm
It depends! If you're in an office with overhead lighting or outdoors in daylight, I find the focus to be basically on par with my 50mm f/1.4, maybe a hair slower. This isn't a sports shooter, but it'll get the job done.
If this is true, it'll be fast enough for me, especially considering that the 18-135mm STM will be even faster. Your comments are also in line with Roger's over at lensrentals who said (regarding focus speed), I’d put it about the same as the 18-55 IS kit lens / Canon 50 f/1.4 lens category. Not lightning, but it moves along well.
Thanks for the good information everyone and again, sorry for my impatience!