Will this lens auto-focus in movie mode? A sales guy told me that the a non-STM lens would only have manual focus when taking movies but I wasn't sure how to know if this lens is STM or not. He was referring to a similar Tamron lens (18-270). Will this lens auto-focus in movie mode? A sales guy told me that the a non-STM lens would only have manual focus when taking movies but I wasn't sure how to know if this lens is... » Read More Will this lens auto-focus in movie mode? A sales guy told me that the a non-STM lens would only have manual focus when taking movies but I wasn't sure how to know if this lens is STM or not. He was referring to a similar Tamron lens (18-270). « Show Less
2046268
The autofocus function is controlled by the camera, not the lens. Let's say that the lens has the muscle but the camera has the brain. So if you have another lens that does not autofocus in movie mode, don't expect this one to do so.Hoping this answers your question.
2046269
For all practical purposes, no. Depending on your camera, it will auto focus, but only on one point, and the focus is always jumpy. There is no smooth transition available.
934839
This lens does auto focus if you have a camera with a built in auto focus motor. The lens itself does not have a built in motor so if you are trying to buy it for say a D5100 it will only work manually.
1299323
Hello, the optical design has been improved, as well as the coatings. The STM focusing motor, primarily an advantage for video, can also result in more accurate focus for still images, so I would say yes, but not a huge improvement. Thanks, and let us know if you have any other questions.
1654694
Do note that with the STM motor it will not auto-focus on anything before the T4i as its not supported while in video-mode.
980020
No, not in auto-mode. But you can fine tune the focus when you switch to manual focus on the lens, and you leave the camera set for auto focus.This is different than other Pentax lenses that don't have the switch on the lens, this may be due to the fact that this lens was built by Tamron. I don't find this to be a big deal though, and enjoy the lens a lot!
361637
Don't quite understand the question but I have the Pentax version of this lens and it can operate in manual or auto focus. Just flip a switch.
1768509
I had both! The STM is the superior of the two IMHO for three reasons - sharper (clearer pictures) in general, silent focusing for video and a nice focal length as a follow on from the 18-55 kit lens.I tend to pixel peep to a certain degree, so the STM is the one in my bag. It is a bit unwieldy on the SL1, but manageable! Very useful.
888895
I have not been happy with the auto focus. I have used this lens with both a cannon T3 and a cannon 70D. The problem is it will no come into focus. I have contacted sigma asking if there is anything that can be done about this. I have not yet gotten a reply.
606483
I have these lens and I cannot use the autofocus, only manual. It won't focus no matter at what range. So disappointed..
1394505
Yes this lens has auto-focus. I have used it on one outing to the Miracle Garden in Dubai and it was awesome. I have been trying to get a good solution to macro photography. I have tried extension tubes, close-up filters and decided to spend the money and try a macro lens. I am glad that I did. This lens in my opinion was well worth the money.
863859
I haven't taken a lot of video but I never have much with any digital camera I've owned. Having said that, I would ONLY shoot video with STM lense (like the 18-135 in this kit) so when the auto focus "hunts" for focus its at least silent. I shot one video with the 50-250...you could hear every motor movement. Yes it is simple to use. You set the mode you want (manual, aperture priority, shutter priority or auto) and press the record button...It picks up clear audio better than any cellphone(probably not the best comparison) but in the videos of the kids in the yard you can heard what they are saying clearly enough from 20+ ft away. I haven't taken a lot of video but I never have much with any digital camera I've owned. Having said that, I would ONLY shoot video with STM lense (like the 18-135 in this kit) so when the auto focus "hunts" for focus its at least silent. I shot one video with the 50-250...you could hear every motor movement. Yes it is simple to use. You set the mode you want (manual, aperture priority, shutter priority or auto) and press the record button...It picks up clear audio better than any cellphone(probably not the best comparison) but in the videos of the kids in the yard you can heard... » Read More I haven't taken a lot of video but I never have much with any digital camera I've owned. Having said that, I would ONLY shoot video with STM lense (like the 18-135 in this kit) so when the auto focus "hunts" for focus its at least silent. I shot one video with the 50-250...you could hear every motor movement. Yes it is simple to use. You set the mode you want (manual, aperture priority, shutter priority or auto) and press the record button...It picks up clear audio better than any cellphone(probably not the best comparison) but in the videos of the kids in the yard you can heard what they are saying clearly enough from 20+ ft away. « Show Less
119686
The STM (step motor) lens--hell yes. Even without the step motor it would be worth it. It's an excellent lens. Auto Focus is quick and virtually silent. I've taken shots in the dark, no flash, ISO 12800 with extremely low noise with this lens. It's amazing.
2137578
The STM (step motor) lens is virtually silent. Anyone who says otherwise hasn't actually used one and is passing on bad information from YouTube. I have this camera with the EF-S 18-135 STM lens. There is no noise, at all, none. You can't hear it while you're shooting or in the resulting video. It's absolutely silent, fast, autofocus. I really wish people would not talk authoritatively about things they have no first hand knowledge about.
1919428
Complicated question; but short answer; it's great for video. Research the camera and you'll see that people are using these for actual professional video production. That being said, STM lens is essential for speed of focus and quietness. It's also important to choose the right settings and lighting for your shot. Regarding comparisons to camcorders; camcorders of course are made for video, but what most people don't understand is that they have much smaller capture areas than an SLR. So the images on an SLR can be (and with this one are) more accurate and detailed than most consumer camcorders. So for an all in 1 solution; you can't beat this camera. If this was helpful, please click yes! Thank you.
794474
The new STM lens is an inch shorter and adds a zoom lock and instant manual-focus override to the older 18-135mm EF-S IS lens, however manual focus is electronic. The focus ring isn't connected to anything, and there is a tiny time delay between when you move the ring and the lens moving. Another huge improvement from the older 18-135mm EF-S IS is that the zoom range from 24mm to 18mm has been spread-out on the zoom ring, so it's much easier to set precise wide-angle framing. On the old lens, it was very cramped at the wide end.
1855393
It will not autofocus. If you purchase this lens you will have to manually focus all of your shots
794476
I have the 18-135mm STM lens and if your planning to do any video shooting its a better buy hands down! I use this lens daily! I also have the 40mm STM lens the STM version is quiet and it seems to work best with the Canon DSLR's