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Posts: 5
Registered: ‎12-12-2014
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70d is producing shots with prominent white streaks! Cleaned everything. Sensor issue!? Thoughts?

My 70d suddenly started taking shots with a PROMINENT white streak! The smaller the aperture the more prominent it is...this led me to believe it may be a dust issue ( although I have never seen dust accumulate this way) so I thoroughly cleaned everything. It didn't seem to help. Any thoughts? It seems as though it might be a sensor issue...which I would hate to replace!
Esteemed Contributor
Posts: 4,810
Registered: ‎11-13-2012

Re: 70d is producing shots with prominent white streaks! Cleaned everything. Sensor issue!? Thoughts

Try reformaiing your card or try a different card.
John Hoffman
Conway, NH

1D X, Rebel T5i, Many lenses, Pixma PRO-100, MX472
Esteemed Contributor
Posts: 3,440
Registered: ‎06-11-2013

Re: 70d is producing shots with prominent white streaks! Cleaned everything. Sensor issue!? Thoughts

Can you post an example?

 

Dust can usually be spotted by pointing the camera to something light with no contrast (a plain white wall... a plain blue sky, etc.) and taking a photo at very high f-stop (e.g. f/22 or higher) and again at your lowest f-stop.  The dust will show much more prominently at high f-stop.  If there's no difference between high & low f-stop, it's probably not dust.

 

You may also be experience some sort of flare... points of light will throw diffraction spikes at high f-stops and you can also pick up reflections or ghost (at any f-stop).  Filters can be especially problematic for adding to flare or ghosting issues.

 

 

Tim Campbell
5D III, 5D IV, 60Da
Occasional Contributor
Posts: 5
Registered: ‎12-12-2014

Re: 70d is producing shots with prominent white streaks! Cleaned everything. Sensor issue!? Thoughts

Here are two examples shot on diffrent days. Initially ( the birds) I just thought it was sunflare...and shrugged it off. The next day this appeared in every image I took! Slightly altered by setting and light, but it was alwayse present. 

 

Thank You for your input!

 

bird.jpg282.jpg

Occasional Contributor
Posts: 5
Registered: ‎12-12-2014

Re: 70d is producing shots with prominent white streaks! Cleaned everything. Sensor issue!? Thoughts

Thank you!I tried this in my first round of trouble shooting, unfortunately it did not help.
Esteemed Contributor
Posts: 3,440
Registered: ‎06-11-2013

Re: 70d is producing shots with prominent white streaks! Cleaned everything. Sensor issue!? Thoughts

This appears to be an internal reflection.  It *might* be caused by the lens, but not necessarily.

 

Remote the lens and follow the instructions to put the camera into manual sensor-cleaning mode.  This will cause the reflex mirror to swing up and the shutter will open.  

 

Ordinarily you'd do this to clean the sensor... but this time you want to do it just to inspect the camera and make sure everything did, in fact, swing clear of the optical path between the lens and the sensor (e.g. make sure the mirror isn't just partially swinging up, etc.

 

If everything is swinging clear then it's possible this is in the lens (do you have more than one lens?)

 

You may wan to remove the lens and look through it with the lens pointed at a plain non-contrast subject... such as a plain white wall.  You're looking for obstructions, etc.

 

You may also need to re-attach the lens to the camera, and do this again... but this time set a high f-stop (e.g. f/11, f/16, f/22) and use the camera's Depth of Field preview button.  This would allow you to check to verify that all of the aperture blades are properly sliding in and out and you don't have a stuck blade on the aperture.

 

Tim Campbell
5D III, 5D IV, 60Da
Occasional Contributor
Posts: 5
Registered: ‎12-12-2014

Re: 70d is producing shots with prominent white streaks! Cleaned everything. Sensor issue!? Thoughts

I do have several different lens options and the obstruction appears using all of them. Leading me to believe that the issue is with the camera body itself.

I went through the Manual sensor mode several times today both to clean and check for obstructions. The mirror seems to be functioning properly. The cleaning rendered me with a nice crisp shot.....of the streak!

I am stumped.



Esteemed Contributor
Posts: 2,257
Registered: ‎11-14-2012

Re: 70d is producing shots with prominent white streaks! Cleaned everything. Sensor issue!? Thoughts

Looks like a shutter problem.

"A skill is developed through constant practice with a passion to improve, not bought."
VIP
Posts: 9,050
Registered: ‎12-07-2012

Re: 70d is producing shots with prominent white streaks! Cleaned everything. Sensor issue!? Thoughts

Yes it is a shutter problem.  In fact it is a shutter blade is sticking.

A lot less stuff for 2018 but still a lot of Canon stuff. Along with, a lot of other stuff.
Esteemed Contributor
Posts: 4,285
Registered: ‎06-25-2014

Re: 70d is producing shots with prominent white streaks! Cleaned everything. Sensor issue!? Thoughts


ebiggs1 wrote:

Yes it is a shutter problem.  In fact it is a shutter blade is sticking.


If it's a sticking shutter blade, why doesn't the streak extend the entire length of the frame? Could it be a sticking mirror, possibly in the autofocus mechanism, instead?

 

Either way, of course, it presumably needs the attention of a professional repair shop.

Bob
Boston, Massachusetts USA
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