topic Re: Canon 800D (T7i) -- ability (or non-ability) to use manual cine lenses in EOS DSLR & Mirrorless Cameras

Canon 800D (T7i) -- ability (or non-ability) to use manual cine lenses

nwiles1414 — Fri, 30 Oct 2020 19:39:49 GMT

I bought the Canon 800D because it allowed for external audio and I'm not yet ready for a pro camera.

That said, I like to shoot video and wanted to upgrade my lens and got a Rokinon 35mm after seeing tons of reviews saying it was the best lens for budget-conscious amateurs getting their feet wet on video...

Only problem is the lens will not communicate with the camera and only works about 20% of the time...which makes it completely unreliable.

Another problem is the Canon 800D does NOT have a setting int he menu for release shutter w/o lens...

Anyone else have this problem or know a fix...or am I just stuck using only Canon lenses?

Re: Canon 800D (T7i) -- ability (or non-ability) to use manual cine lenses

Waddizzle — Fri, 30 Oct 2020 20:36:19 GMT

Nearly all of the Rokinon lenses are fully manual lenses. They do not communicate with the camera. The Aperture setting will typically display as "F00" in the Quick Menu, and in the Optical Viewfinder. You will not have any auto focus capability.

As far as firing the shutter goes, only the mirrorless cameras lock out the shutter release, by default, when there is no lens attached. It should fire no matter what, every time you fully press the shutter.

[EDIT] The Rokinon provides a medium wide AOV, Angle of View, on a full frame camera body. It will provide a medium standard AOV on an APS-C sensor body like the Rebel T7i.

It is perfect for one of those "talking head" shot videos that you see all over YouTube.

Re: Canon 800D (T7i) -- ability (or non-ability) to use manual cine lenses

ebiggs1 — Mon, 02 Nov 2020 14:44:11 GMT

Just buy a Canon lens. It will work!

Re: Canon 800D (T7i) -- ability (or non-ability) to use manual cine lenses

kvbarkley — Tue, 10 Nov 2020 14:56:57 GMT

Is the camera in manual focus mode?

Re: Canon 800D (T7i) -- ability (or non-ability) to use manual cine lenses

Storme22k — Sat, 31 Jan 2026 11:12:20 GMT

Hi, i know this is like 5 years too late but the Canon 800D doesnt have that option as it automatically does it, you cant turn it off.

i just ordered a manual vintage lens and was about to cancel my order till i decided to see if my 800D will take a photo without a lens on as i wasnt able to find the option either, and the shutter went off.

Re: Canon 800D (T7i) -- ability (or non-ability) to use manual cine lenses

Waddizzle — Sun, 01 Feb 2026 20:37:39 GMT

“ Just buy a Canon lens. It will work! “

Which lens would you suggest? When capturing video it’s advantageous to use a lens with an aperture ring. For a budget conscious video setups, using a fully manual lens is more useful. Besides, Digital Rebels do not have AF tracking in video mode, and the AF display gets in the way.