Lens Comparisons - Canon 18-80mm T4.4 vs Canon 24-70mm f2.8 II

We decide to compare canons most popular stills lens, the 24-70mm f2.8 II, to their new affordable cine zoom, the 18-80mm T4.4.
We look at the zooming, focus breathing, sharpness, image stabilisation and smoothness of the aperture rings.

Canon 18-80mm T4.4
Canon 24-70mm F2.8 L II


Main Camera
Canon EOS C300 Mark II EF Mount 
Key Light
Lishuai Edge 700RSV 20 Inch Soft Bi-colour LED Light


Video Transcript

Hi, Carl here for ProAV TV. Today I wanted to take a look at the footage from the new Canon 18-80mm cine lens and compare it to the stills glass which many people will be used to, in this case the 24-70mm f2.8 mk2.

So first up I wanted to check the focus breathing. This is where stills lenses that are designed for autofocus use zoom slightly when focusing in and out. You can see the 24-70 has pretty bad breathing at both the wide and telephoto ends. The 18-80 does have some at the wide end, but at the telephoto end there is next to none. This makes a big difference when you are doing focus pulls.

Next up I simply closed and opened the aperture on both lenses. The 18-80 has a physical aperture ring which has been declicked. So its very easy and smooth when changing your iris. The 24-70 obviously steps up and down in increments and is controlled by the dial on the camera.

Then I simply zoomed in and out with both lenses. The 18-80 is obviously smoother here as its a servo lens, and its completely par focal. I was actually surprised though at just how par focal the 24-70 was. It does loose focus in the middle slightly but remains in focus at both ends. This will differ from lens to lens though so it might be that we got lucky with this unit here we were using. Plus the 18-80mm has a back focus adjustment so you can always ensure sharp focus, so it still definitely takes the win here, but the 24-70 isn't bad for a stills lens at all.

Now this one is a slightly unfair test as the 24-70 doesn't have any image stabilisation at all. But I just wanted to see how big a difference it made, and sure enough its pretty obvious which one has stabilisation. The 18-80 also has 3 different modes of stabilisation so you can fine tune it for the type of movement you are doing.

Lens comparisons are always subtle. But there are some definite differences here both in image quality issues like focus breathing, and usability for video work. The 18-80 is hands down the better lens, although the 24-70 doesn't hold up too badly at all. Thanks for watching, and if you have any other lenses you would like me to compare, just let me know in the comments and subscribe for more.

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