5D4 Sensor Defect Discovered

LSXPhotog

EOS RP
Apr 2, 2015
377
204
www.diossiphotography.com
Well Michael the Maven made a post (http://www.canonrumors.com/forum/index.php?topic=30990.0) that got me to do my own testing so see if it was an isolated occurrence, or something that impacted my 5D4 as well. Turns out, YES...my 5D4 sensors experiences the same phenomena that could actually impact real-world results. Also worth noting is just how poorly my camera recovers shadows at ISO 100 versus ISO 50.

The details on what generated this phenomena: I underexposed by 5 stops and then recovered the RAW file 5 stops and pushed the shadows 100% to intensify the ability to see the problem. I then repeated 4 stops under and pushed them the same 5 stops and 100% shadows. The pattern appears to streak across the frame as if the results of the reading on the left side of the image impact the remaining photo-sites horizontally from it.

Obviously I never underexpose an image my as much as 5 stops, and the problem doesn't seem to appear when you're 3-stops under...but let's be real! This shouldn't happen at all PERIOD. I think I may be exchanging my 5D4 after I call Canon next week and see what they have to say about it. This could very well be a defect.

Image 1: 5D3 on the left and 5D4 on the right: ISO 50, 5-stops under, pushed 5-stops and 100% shadows


Image 2: 5D3 on the left and 5D4 on the right: ISO 100, 5-stops under, pushed 5-stops and 100% shadows


Image 3: 5D4 ISO 50 on the left and ISO 100 on the right: 5-stops under, pushed 5-stops and 100% shadows


Image 4: 5D4 ISO 50 on the left and ISO 100 on the right: 4-stops under, pushed 5-stops and 100% shadows


Image 5: Zoomed in to show detail on Image 3.


Image 6: Zoomed in to show detail on Image 4.


Just wanted to share my results here and I'll add more information after I speak to Canon.
 

Mt Spokane Photography

I post too Much on Here!!
Mar 25, 2011
15,477
713
We have met the enemy and he is us. Having to boost a photo 5 stops is not a sensor defect, something else is defective.
 

Ryananthony

EOS 7D MK II
Nov 7, 2015
498
2
Mt Spokane Photography said:
We have met the enemy and he is us. Having to boost a photo 5 stops is not a sensor defect, something else is defective.
Photography was a skill, a talent, and art. It has become so easy for anyone to pick up a camera, with a electronic viewfinder and the ability to push exposures 5 stops. why does anyone need to learn anything any more. Change your sething until the evf looks right. Ugh.
 

BigAntTVProductions

Hey Fellow Canon Shooters
Oct 13, 2014
275
21
37
NYC
www.facebook.com
this camera's been out for 1 month and change
WHY IS EVERYBODY TRYING TOO FIND AS MANY FLAWS as possible for the 5d4 smh ::)
either buy it be happy or don't buy it use what you have leave too nikon or sony
 

Alejandro

EOS M50
Feb 6, 2015
49
0
I just had to see this for myself, so i did this:

Underexposed a pic by 5 stops with iso 50.
Then underexposed 5 stops in post.
Then export in tiff.
Then underexpose 5 stops again.
Then export again in tiff.
Then overexpose by 15 stops.

The result was this:
 

Attachments

3kramd5

EOS 5D MK IV
Mar 2, 2012
3,082
404
LSXPhotog said:
my 5D4 sensors experiences the same phenomena that could actually impact real-world results.
[snip]
Obviously I never underexpose an image my as much as 5 stops
Then how is it going to affect your real world results?

LSXPhotog said:
I think I may be exchanging my 5D4 after I call Canon next week and see what they have to say about it.
I'd love to hear what the engineers would say when someone calls asking about image artifacts occurring after increasing brightness by 3100%.
 

Jack Douglas

CR for the Humour
Apr 10, 2013
6,097
1,034
Alberta, Canada
"Some of the posts in here might break the Internet. LOL Some people will never be happy with what Canon delivers...just continue worrying about your gear and taking awful images and blaming the gear. (Hint: it's not the gear)"

Anyone care to guess who made this wise statement? Hint: it wasn't me. ;)

Jack
 

Aglet

EOR R
Feb 26, 2012
1,726
15
AB
5d4 is miles ahead of Canon's previous bodies in raw editing latitude.
Even i'd consider using a 5d4 for cat pictures and would likely have little to complain about, unlike the 2 previous versions.
 

tpatana

EOS 6D MK II
Nov 1, 2012
1,227
16
Spock said:
3kramd5 said:
LSXPhotog said:
I think I may be exchanging my 5D4 after I call Canon next week and see what they have to say about it.
I'd love to hear what the engineers would say when someone calls asking about image artifacts occurring after increasing brightness by 3100%.
While you are talking to them, could you find out why the weather sealing fails when you change lenses underwater?
And CFast was supposed to fix the bent-pins problem. BS. I jammed my CFast into my 5D4, and got F*** bent pins! Such huge design flaw.
 

romanr74

I see, thus I am
Aug 4, 2012
531
0
45
Switzerland
BigAntTVProductions said:
this camera's been out for 1 month and change wHY IS EVERYBODY TRYING TOO FIND AS MANY FLAWS as possible for the 5d4 smh ::)
Because before I spend 3k I want to be sure I get something better than I have today...
 

meywd

EOS 6D MK II
Dec 9, 2013
806
5
Hoboken NJ
mahmoudsdarwish.com
tpatana said:
Spock said:
3kramd5 said:
LSXPhotog said:
I think I may be exchanging my 5D4 after I call Canon next week and see what they have to say about it.
I'd love to hear what the engineers would say when someone calls asking about image artifacts occurring after increasing brightness by 3100%.
While you are talking to them, could you find out why the weather sealing fails when you change lenses underwater?
And CFast was supposed to fix the bent-pins problem. BS. I jammed my CFast into my 5D4, and got F*** bent pins! Such huge design flaw.
;D ;D ;D
 

Mikehit

EOS 5D MK IV
Jul 28, 2015
3,213
398
romanr74 said:
Because before I spend 3k I want to be sure I get something better than I have today...
Well, as you keep on reminding us, this camera this camera is clearly not it so buy a ******** Sony.
 

kiwiengr

EOS M50
Feb 14, 2015
37
8
LSXPhotog said:
Well Michael the Maven made a post (http://www.canonrumors.com/forum/index.php?topic=30990.0) that got me to do my own testing so see if it was an isolated occurrence, or something that impacted my 5D4 as well. Turns out, YES...my 5D4 sensors experiences the same phenomena that could actually impact real-world results. Also worth noting is just how poorly my camera recovers shadows at ISO 100 versus ISO 50.

The details on what generated this phenomena: I underexposed by 5 stops and then recovered the RAW file 5 stops and pushed the shadows 100% to intensify the ability to see the problem. I then repeated 4 stops under and pushed them the same 5 stops and 100% shadows. The pattern appears to streak across the frame as if the results of the reading on the left side of the image impact the remaining photo-sites horizontally from it.

Obviously I never underexpose an image my as much as 5 stops, and the problem doesn't seem to appear when you're 3-stops under...but let's be real! This shouldn't happen at all PERIOD. I think I may be exchanging my 5D4 after I call Canon next week and see what they have to say about it. This could very well be a defect.
Have you performed this test with other Canon models, other manufacturer's equipment? Is there a benchmark for this?
 

tron

EOS 5D SR
Nov 8, 2011
4,034
338
romanr74 said:
BigAntTVProductions said:
this camera's been out for 1 month and change wHY IS EVERYBODY TRYING TOO FIND AS MANY FLAWS as possible for the 5d4 smh ::)
Because before I spend 3k I want to be sure I get something better than I have today...
I see that you have 5DMkIII. Isn't 5DMkIV something better than what you have today?
 

romanr74

I see, thus I am
Aug 4, 2012
531
0
45
Switzerland
tron said:
romanr74 said:
BigAntTVProductions said:
this camera's been out for 1 month and change wHY IS EVERYBODY TRYING TOO FIND AS MANY FLAWS as possible for the 5d4 smh ::)
Because before I spend 3k I want to be sure I get something better than I have today...
I see that you have 5DMkIII. Isn't 5DMkIV something better than what you have today?
I contrast to Mikehit's claim i never said it isnt. However I'm struggling if it is justifying the spend over what I do currently have.
 

BigAntTVProductions

Hey Fellow Canon Shooters
Oct 13, 2014
275
21
37
NYC
www.facebook.com
tron said:
romanr74 said:
BigAntTVProductions said:
this camera's been out for 1 month and change wHY IS EVERYBODY TRYING TOO FIND AS MANY FLAWS as possible for the 5d4 smh ::)
Because before I spend 3k I want to be sure I get something better than I have today...
I see that you have 5DMkIII. Isn't 5DMkIV something better than what you have today?
i see that your really trying too troll and need too mind your business