Hi Folks, So I have a Canon 7D and a 70-200mm EF lens. I got givena 1.4X EF extender. Question. What's the overall focal length? is it 1.6 (crop factor) X 1.4 (extender) x 70 (at low end) = ~157mm (or 448mm at high end) or is it 98mm at low end 'cro...
Hi,I've been watching the early reviews of the RF 100mm f/2.8L lens with interest, as I am greatly looking forward to having a native 1:1 (or better!) macro option on the R5.All the demos that I have seen of the SA control feature have results where ...
Hi everyone, I just received my new EF 70-300mm f/4-5.6 IS II USM and I'm battling a big issue. On its long end (supposedly 300mm), the zoom ring rotates all the way but lens indicate 267mm in the photo data (Canon 200D). Since it has got an APS-C se...
Here's where I'm coning from. I have a Canon T7 with the 75-300 lens. Some of you will recall I had inquired about the Sigma 150-600 lens. I was browsing through Lenses and found a conversation that mentioned keeping a lens that goes to 300mm and get...
Hello Forum, I have a question regarding the Canon EF 70-210 f4.0 I recently purchased. This lens was manufactured in 1987 designed for 35mm cameras. When this lens is used with APS-C sensor DSLR (30D) what wouild be the atucal adjusted focal lengt...
Hi. I've read some of the previous threads regarding issues with autofocusing on this particular lens, but I think that my problem is somewhat different.When I turn on the camera, 5D III, the lens immediately starts hunting/clicking, and when I say ...
I have a kit lens of 18-55mm. However, recently while zooming in the 'subject' gets blured but when I zoom out it works fine. This happens in all the mode. I tried to resent the camera to factory setting too but still the same issue. Can any one thro...
Has anyone owned this 1st generation 70-210 f4 from 1987? What did you think of its performance? Would it be a lens worth keeping?
is there an adapter that can run the autofocus on the canon ? Have a fotodiox adapter , but totally manusl .
I'm using canon 100mm lens and I have the camera on auto focus but when I attach the macro lens it automatically switches to manual focus? Does anyone know why it's doing that? I have a 50mm and this doesn't happen so I think it's an issue with the 1...
Hi everyone,I was wondering if anyone could help me. I just bought a used lens on let go (Canon 24-1-5 f4 L Series). I use it on my canon rebel t6. The switch from af to mf physically switches but it stays in af. Is this something I can fix or is the...
Which do people prefer and why?
When I turn camera on, the lens makes a sound like a low-pitched alarm and it never goes off until I turn power on. Also, when I look through the viewfinder, the whole image is shaking in tune with the alarm. You can feel the camera shake with eac...
Hi Friends, Does anybody have first-hand experience comparing this lens to its predecessor the EF 600mm f/4L IS II? Particularly I'm interested in the sharpness loss fact while it's paried to a teleconverter.I'm in the market for the RF 600mm f/4 (wh...
just to confim - i sent my lens to CPS to get my lens reapaired , and they told me that the Canon 70-200 L IS usm 2.8 is at end of life and no parts are avalible , im finding this hard to belive . can someone from canon explian thanks
