Is my camera faulty?

AshD93

AshD93

AshD93

Associate
Joined
21 Oct 2009
Posts
1,613
Hi guys,

For the first time I thought I would try to enter the photo competition on Overclockers.. However, while messing around, I noticed this. Apologies for the large images in advance. If you look carefully, there is a 'x' in my images?

Is this therefore a faulty camera? Considering the amount I paid, I don't expect to see this (I know TV's can have faulty pixels which are at times, not covered).

Edit: Just as I was highlighting one of the 'x's I spotted another!

NW4bKPH.jpg.png

3wTSSTP.jpg.png

Edit 2: It's a Canon 700d bought in November. I do change lens from time to time. Bought from JL so got 2 years on it.

Edit 3: All pictures were JPEG's straight off the camera. I haven't really tried RAW much yet.

Edit 4: Just looking again and I've seen a one or two more!

Regards

Ash
 
Last edited:
You could try getting the camera to map them out.

Take the lens off and put the body cap on. Now use the menu to enter manual sensor cleaning mode, which will lock the mirror up. Now wait 30 seconds or so and then turn the camera off. Now turn it back and on and test again.

I've read the above procedure will make the camera map out hot pixels but I've never tested it myself.
 
Even if you had 20 of them it's only 0.000111% of the pixels, it's fairly normal especially on longer exposure shots.
 
Not faulty， all cameras are like that i think . If you shoot raw you'll probably never see them as they get mapped out
 
Zogger said:
. If you shoot raw you'll probably never see them as they get mapped out
Click to expand...

Ah is that what happens. I came home the other day checked on my son and he was asleep in the dark cuddling his teddy. So I set the tripod up and took a few 30 sec+ exposures.

When I loaded the raws into lightroom for a second I saw hot spots and then they went and so on as I previewed through the frames. I thought something like that must be happening.

I think I'm right in saying that when you initially select a frame in lightroom in shows the picture as it is on the back of your camera which even if you shoot raw shows the jpeg settings and then it loads the raw?
 
yep that's normally what happens, it takes a couple of seconds to apply the standard adjustments and in that time you can normally see these spots, it's particularly apparent on dark long exposures like that because a) it's dark and b) the long exposure allows the sensor to heat up which causes more of them

although it's not quite the "jpeg settings" as such because if you shoot in jpeg the camera will apply its own processing to enhance colours etc - this is also what you see on the back of the camera.
 
Last edited:
Vertigo1 said:
You could try getting the camera to map them out.

Take the lens off and put the body cap on. Now use the menu to enter manual sensor cleaning mode, which will lock the mirror up. Now wait 30 seconds or so and then turn the camera off. Now turn it back and on and test again.

I've read the above procedure will make the camera map out hot pixels but I've never tested it myself.
Click to expand...

On my old 400D there was a menu option to map hot pixels which it then applies to images. No need to do all that above if that's there still.
 
You must log in or register to reply here.
Back
Top Bottom