Hi everyone, I'm a researcher from the university. In my study, we ued two SLR lens with Ultrasonic Motor for imaging (f=50/1.4 and f=100/2.8).Recently one reviewer of our paper ask us to compare our new technique with the focusing speed of the USM...
Hi everybody!I switched recently from Canon EF 70-300 IS USM II to RF 100-500 L and noticed that when mounted on a tripod my 100-500 unit (looks like) shuts down IS. Just want to know... is it something wrong with my unit or is it just a normal behav...
I have Rebel T6i and I want to buy Canon EF 70-200mm f/2.8L IS III USM Lens... Can I used it on my camera?
My 1.4x iii release/anti-rotation pin doesn't aways engage and I have to move the lever back and forth a few times on occasion. Not wanting my attached lens/body to fall off, I aways try to check. I would like to send this in for service, but it loo...
Can someone point me to the correct dust caps for this model lens? Unable to find on the Canon site.
I cannot register my RF100-500mm F4.5-7.1 L IS USM as it doesn't come up as I type it in.
Lens: Canon 500mm L iiProblem statement:I notice that if I shoot at f8 or higher fstop that the resultant picture is more and more overexposed by about one fstop for every fstop raised. I think that the aperture is not closing to narrower than about ...
Hello forum,I recently purchased this lens and tried to register is on Canon website.They don't have it in the list of available products.How can I register my purchase?Thank you!
There is a just announced Macro for EF-M with several cool features:Builti in LED lightsMagnification to 1.2X life size .31 ft focus distance which I am guessing is about 2" in front of the lens.
I have a Canon rebel eos t7. Is there another telephoto lens that i can use past 300?
When in MF and I turn the focus ring, it turns forever but makes no adjustment. When in AF, and half press the shutter, it clicks but makes no adjustment. Is it trash? I'm so sad, I love this lens. Nothing happened... It was working yesterday. T...
I've been shooting with an R5 and a number of different RF lenses with no issues. Everything is great. I recently purchased the RF 15-35mm F2.8 IS USM for landscape shots. The pictures all show distortion where for example trees on the left are sla...
The manual focus ring on my Canon 18-135mm EF-S spins freely whether the switch is in the AF or MF position. It does not alter the focus. Auto focus works well. Another zoom lens seems to allow manual focus without difficulty. What have I overlooked?
Yesterday I started having an issue with my Canon 1Dx Mark II and 400mm f/2.8 IS II - When the lens is attached to my camera, nearly all buttons stop working, including review, menu buttons, set, AF-On, etc. The only buttons/dials that work are the s...
Many times now I have noticed a lot of my photos are coming out out of focus and I know that I have focused on the eyes of the subject in each photos. I notice it more with any focal length below 100mm but it's not always happening. It seems that if ...
