To put simply, I didn’t quite expect to have any issues with my Canon 5D Mark IV after I unboxed it. After adopting third-party lenses over the years I more or less expected things to function as it did on my Canon 5D Mark II.

The first lens I had on hand was my Sigma 50mm f/1.4 and when I turned on the ‘Live View’ to set exposure I noticed right away that there was a giant transparent circle covering the entire screen..



At first I thought it was the in-camera horizon leveler and didn’t think too much of it, but then when reviewing the photos the transparent circle was actually still on top of the image. Was something wrong with my camera?! Did I get a faulty unit?

So after looking online it appears that this is a common issue that is also apparent in the Canon 1DX Mark II and potentially other Canon cameras as well.

To correct this, you will need to do the following:

  • Navigate to the 1st page of the RED menu and locate the ‘Lens aberration correction’ selection
  • Turn OFF the ‘Peripheral illum corr’

What this peripheral illumination correction setting does is that it fixes the edges of your photos so that it doesn’t have a dark vignetting around it. It’s not a big issue having this setting turned off, as it can be easily fixed in Adobe Lightroom.

The next lens I wanted to test after finding this issue was my Tamron 15-30mm f/2.8 lens. There doesn’t seem to be the issues with the transparent circle like the Sigma but another problem has come up..

It appears that you can’t switch into ‘Live View’ when you are in Photo or Stills mode — when you press the button, the screen switches to ‘Live View’ for a split second and then goes back to the camera settings screen. The only way to get ‘Live View’ to work is by switching your camera into Video or Movie mode and then things seem to function OK.

This is honestly a bit of a hassle and can slow down photographers who tend to switch into ‘Live View’ to set exposure and color correction before shooting.

I’m not sure if there will be a firmware update to correct either of these issues, but I figured that I’d do a quick video for those who are looking to purchase the Canon 5D Mark IV and own either a Sigma or Tamron lens.

Hope it helps, and let me know in a comment below if you are having the same issues with your lenses.


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– Norman




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