How does the auto focus speed of this lens compare to canon USM lenses?
1082258
Im not certain on the specifics, but from my personal experience, nikkor was a little bit slower than a 70-200 cannon i used recently. Not a great deal, but in high velocity sports it could be substantial. Sorry i cant be much help tho :)
1908363
The focus on the copy I had was really slow and was too slow for chasing kids around. If you need a fast focusing lens you might look at the 50 1.8g. I found the 85 to be a little long on a cropped sensor camera and like the 50 better. The optics on this lens are amazing and you will be thrilled in that area. It is a great lens especially for the money and the focus speed and focal length are mostly personal preference. If you are looking for a lens where you can stand back a ways and still get the shot or want to fill the frame with a headshot this is a great lens.
2072504
F. Dudek,This lens would be ok. The speed of the lens is ok, as far as f/stops go. The focus speed might not be up to the task. Also the focal length of the lens might be a little short for what you want to do. However, at $100 you wont find a better value lens, it is worth having. My suggestion would be buy the lens and try it. If it doesn't work it will still be great for home indoor photography. If it doesn't work look at the Canon EF 85mm f/1.8 USM Medium Telephoto Lens, it has just as fast aperture, has faster ring USM focus, and has a little bit longer reach. For even more reach look at the Canon EF 100mm f/2 USM Telephoto Lens. F. Dudek,This lens would be ok. The speed of the lens is ok, as far as f/stops go. The focus speed might not be up to the task. Also the focal length of the lens might be a little short for what you want to do. However, at $100 you wont find a better value lens, it is worth having. My suggestion would be buy the lens and try it. If it doesn't work it will still be great for home indoor photography. If it doesn't work look at the Canon EF 85mm f/1.8 USM Medium Telephoto Lens, it has just as fast aperture, has faster ring... » Read More F. Dudek,This lens would be ok. The speed of the lens is ok, as far as f/stops go. The focus speed might not be up to the task. Also the focal length of the lens might be a little short for what you want to do. However, at $100 you wont find a better value lens, it is worth having. My suggestion would be buy the lens and try it. If it doesn't work it will still be great for home indoor photography. If it doesn't work look at the Canon EF 85mm f/1.8 USM Medium Telephoto Lens, it has just as fast aperture, has faster ring USM focus, and has a little bit longer reach. For even more reach look at the Canon EF 100mm f/2 USM Telephoto Lens. « Show Less
354390
For me - I liked the smaller size and the faster general shutter speed in lower light situations. it works very well for a travel all purpose lens - great with landscapes.
213967
Hi the autofocus is fast. This is a relatively fast lens. you can google to compare with the latest lens 58mm f1.4 which produces stunning shots. But this model of 50mm f1.4G is a good lens to use and nice bokeh. Generally no lens will get stuck. I reckon you meant hunting or trying to focus. Every lens has a min distance of focus. Like someone who is long sighted, if you are too close you will not be able to focus. I think this lens is around a foot distance. Check the specifications.
2240581
Thank you Very much for your Help, what do you think about the Tamron 17-50mm f/2.8 XR Di II and the Canon EF-S 17-55mm f/2.8 IS USM? If you had the money for only one general purpose lens, wich one will you chose?
766699
The speed and focus depends on the camera you mount it on but this is a high quality lens. The image quality is fantastic. To get 1 stop better in speed isn't worth the extra money in my humble opinion. If you have a body with high ISO ability you will be quite pleased with this lens. It is designed for full frame FX cameras.
473928
I have owned both lenses, still have the 400 prime. It focuses faster and more accurately, is sharper and light. With good technique and the right settings on your camera the results are pleasing. I hated the push/pull zoom of the 100-400. The only thing I miss is the IS, but if you spend most of your time photographing birds in flight you don't use IS anyway. I bought it used for $1030 and it is a gem.
247254
The Canon EF 35mm f/1.4L USM works very, very well with autofocus. The USM is for "UltraSonic Motor," Canon's way of advertising their very fast, very quiet autofocusing system. One major advantage of USM is that you can still focus manually on top of the autofocus, in case the camera was looking somewhere different from where you were looking at. That being said, "Complete manual focus" just means that you can turn autofocus completely off, and switch to manual focus only. Even when you do that, the lens will still communcate with the camera, and you lose none of the features of the lens/camera system other than being able to completely control the focus manually. Hope that helps! The Canon EF 35mm f/1.4L USM works very, very well with autofocus. The USM is for "UltraSonic Motor," Canon's way of advertising their very fast, very quiet autofocusing system. One major advantage of USM is that you can still focus manually on top of the autofocus, in case the camera was looking somewhere different from where you were looking at. That being said, "Complete manual focus" just means that you can turn autofocus completely off, and switch to manual focus only. Even when you do that, the lens will still communcate with the camera, and you lose none of the... » Read More The Canon EF 35mm f/1.4L USM works very, very well with autofocus. The USM is for "UltraSonic Motor," Canon's way of advertising their very fast, very quiet autofocusing system. One major advantage of USM is that you can still focus manually on top of the autofocus, in case the camera was looking somewhere different from where you were looking at. That being said, "Complete manual focus" just means that you can turn autofocus completely off, and switch to manual focus only. Even when you do that, the lens will still communcate with the camera, and you lose none of the features of the lens/camera system other than being able to completely control the focus manually. Hope that helps! « Show Less
608535
Hey,the focus is very fast and absolutely noticeable compared to the 18-55mm. Hope that helps.Kind regards
970969
I am using this lens with my Cannon 6D which works very well in low light anyway. I use this lens with a tripod for landscape 90 % of the time and I love it !! It is an F4 so it is not as fast as a 2.8 or less. But For the price difference and a little speed loss maybe, the quality is excellent. If you plan to take allot of low light pictures without a tripod you may want to spend the extra money and go for a 2.8 or less. I just love the quality of the photos with this lens. It is fast enough, light weight and takes great pictures.
1495160
I agree with Wesley, for the most part. USM refers to Ultra Sonic Motor, which is a little bit quieter than the regular autofocus motor, but that's not its primary purpose. The USM is capable of Autofocusing a great deal faster than a regular lens. Side by side, you'll notice quite a difference in the amount of time the lens needs to focus. Now, I shoot wildlife photography of wild animals. For me, that time difference in crucial. You'll want that should you ever be shooting moving subjects, like animals or sports events, for example. You'll have to consider how you plan to use the lens, and decide if the additional speed is something you'll need. I agree with Wesley, for the most part. USM refers to Ultra Sonic Motor, which is a little bit quieter than the regular autofocus motor, but that's not its primary purpose. The USM is capable of Autofocusing a great deal faster than a regular lens. Side by side, you'll notice quite a difference in the amount of time the lens needs to focus. Now, I shoot wildlife photography of wild animals. For me, that time difference in crucial. You'll want that should you ever be shooting moving subjects, like animals or sports events, for example. You'll have to consider how you plan to use... » Read More I agree with Wesley, for the most part. USM refers to Ultra Sonic Motor, which is a little bit quieter than the regular autofocus motor, but that's not its primary purpose. The USM is capable of Autofocusing a great deal faster than a regular lens. Side by side, you'll notice quite a difference in the amount of time the lens needs to focus. Now, I shoot wildlife photography of wild animals. For me, that time difference in crucial. You'll want that should you ever be shooting moving subjects, like animals or sports events, for example. You'll have to consider how you plan to use the lens, and decide if the additional speed is something you'll need. « Show Less
579921
It's a better lens. There are video tests on youtube of these two lenses against each other and this lens is considerably sharper. It's sharpness is somewhere between the Canon 85mm 1.8 and the Canon 85mm 1.2 L lens. This is a very powerful lens.
970
Seems pretty fast to me, maybe a little slower as the scene gets darker, but it takes great pictures in very low light with autofocus.Has infrared light to focus with. Hardly ever use flash in a room with ordinary lighting.
2193892
Do you mean fast as in how quick it grabs autofocus? If thats your question, i dont know about the 35 but this is pretty quick. If you were asking about the max aperture, well, this is a f/4 glass so its not as near as fast, but they re two totally different lenses for two different purposes.
2175607
Just bought the Canon 14mm and the Rokinon 14mm manual focus. Returned the Canon. I need sharpness. The canon was soft at the edges at all f-stops. The manual focus is not a problem as I shoot mostly aerials. Great lens for the money.
579923
I love that lens it's more comparable to a Ziess 85mm. The bokeh at 1.5 is awesome! I would highly recommend it over the canon 1.8