Welcome to Michael’s Blog!

Welcome to Michael's blog. Michael Andrew, (aka Michael The Maven) is a freelance producer, photography instructor, tech innovator, and when needed, disaster aid specialist. Disclaimer: Michael is a participant in Bhphoto & Amazon affiliate programs that provides an advertising commission if you purchase through links on this website.


Viewing one post  |  view all recent posts

10.04.16         photography  

Canon 5D IV - Possible Strobe Bug


First let me say Im very impressed with the 5D4. Really incredible camera, even the video - I am very impressed, so this isn't a post to rip on the 5D IV at all. I think it is amazing.

I noticed something strange when shooting my Dynamic Range test, it looks like some sort of ghosting across the frame (see images below) and it occurs even when I block 1/2 of the lens with a poster board. It is a horizontal banding across the entire frame, even on the side that was completely blocked with a black poster board (right on the lens).

The strange thing is, I've posted this on Canon's Forum twice now, and both times it was taken down almost immediately. Which is really strange.

I was wondering if a couple of you guys could test the same conditions on your 5DIV's to see if you are getting the same results?

This is what I know:

1. The defect doesn't happen on a 5D3, A7rii, Nikon D500 or Fuji XT-2 under the same conditions.
2. It only happens on the very far left 1/3 of the frame when over-exposing a certain amount of it, about 1/4-1/3 of the frame, and it typically needs to start on the very far left side, and extend minimum about 1/4 into the frame. Overexposing in the center, the right, or smaller portions of the left side have no effect and seem normal.
3. The defect is strictly horizontal, even when the over exposure is oriented diagonally.
4. The defect is not visible until raising the shadows. You won't see it until then.

Im trying to figure out if this is something exclusive to the 5D4 I was using or if it is a model wide defect.

Can anyone else test this to confirm or deny?

1. Block the right half of the lens
2. Overexpose the left half with a strobe.
3. Open in RAW
4. Open up the shadows.

Please let me know in the comments below & I thank you in advance!

blog stats
posts: 4,825
comments: 12,242
visits:
archive by month
2020:   january  february
2019:   january  february  march  april  may  june  july  august  september  october  november  december
2018:   january  february  march  april  may  june  july  august  september  october  november  december
2017:   january  february  march  april  may  june  july  august  september  october  november  december
2016:   january  february  march  april  may  june  july  august  september  october  november  december
2015:   january  february  march  april  may  june  july  august  september  october  november  december
2014:   january  february  march  april  may  june  july  august  september  october  november  december
2013:   january  february  march  april  may  june  july  august  september  october  november  december
2012:   january  february  march  april  may  june  july  august  september  october  november  december
2011:   january  february  march  april  may  june  july  august  september  october  november  december
2010:   january  february  march  april  may  june  july  august  september  october  november  december
2009:   january  february  march  april  may  june  july  august  september  october  november  december
2008:   january  february  march  april  may  june  july  august  september  october  november  december
2007:   january  july  august  september  october  november  december
Paintballer ProPhotography Lighting Crash CourseCanon Speedlite Crash Course DVDDigital Photography Crash Course DVDMaven Adapter - Sky Cam ConnectorCanon 5Diii Crash Course Training VideoCanon 600EX-RT Speedlite Crash CourseMichael Andrew Lollipops | Photoshop Action SetCanon 6D Crash Course Tutorial Training VideoNikon D5300 Crash Course DownloadMA- Maui Screen Savers 2009Photoshop Crash Course DVD Beginner LessonsMichael Andrew Maui Desktop WallpaperBusiness Crash Course For PhotographersBH PhotoNikon D7100 Crash Course Training Tutorial VideoAdvanced Photography Techniques Lessons DVD