Spot in image

scorsesefan

scorsesefan

Veteran
Can anyone identify what this is? I've cleaned my c70 sensor about a dozen times and looked into the sensor block (ND filter lifted) with a flashlight and I cannot see whatever dust or debrus could be causing this (the spot is near the top of the frame, center right)

Any thoughts? Thanksdust spot .jpg
 
That one? If so, it looks like the common dust particle on the inside, more and more visible as you close down. Sometimes one moves around.

Sometimes it could be a spot from cleaning on the outside, but it would change if you cleaned it again, or another one may appear somewhere else (that's a tough-to-clean area).

DS_.jpg
 
Thanks, Norbro. Yes, the one you circled. It's most visible at f11 up. Really only visible against light backgrounds (like blue or cloudy skies)...
 
I'm debating on whether or not to send it in to have it cleaned. It's minimally $300, but it's annoying me that it (sometimes) shows up in the image under certain conditions. @NorBro have you ever used Photo Tech in the city for service?
 
Noticed a few earlier in my life that had me beginning to check brand new cameras straight out of the box.

Closed the lens all the way down at noon, pointed straight at the sky.

Almost always something there, rarely ever perfectly clean.

It bothered me to no end but I learned to let go, it wasn't easy (so I hear you).

Another thing added to my lifelong list of how imperfect human processes are (and I see a future with cameras being assembled in special chambers with only machines in them which have small air intakes near the parts that are handling the camera parts and putting them together).

___

I haven't used them, or any service; I just returned a camera once or twice.
 
NorBro said:
Noticed a few earlier in my life that had me beginning to check brand new cameras straight out of the box.

Closed the lens all the way down at noon, pointed straight at the sky.

Almost always something there, rarely ever perfectly clean.

It bothered me to no end but I learned to let go, it wasn't easy (so I hear you).

Another thing added to my lifelong list of how imperfect human processes are (and I see a future with cameras being assembled in special chambers with only machines in them which have small air intakes near the parts that are handling the camera parts and putting them together).

___

I haven't used them, or any service; I just returned a camera once or twice.
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Thanks. I bought this one used but I didn't think to check for dust. I suspect it was there all along, but I just noticed it recently when I was pixel peeping a used lens that I bought and DID notice some dust in the front/rear elements. That dust didn't register, but I noticed this in the process. As mentioned it only shows up under certain conditions and one of them is with the speedbooster and FULL FRAME EF lenses. Not my s35 glass.

I really should try to just let it go but my OCD dragging me under...
 
Yup, it's mentally debilitating (the strong OCD).

At this point I don't own a single piece of camera gear besides my new iPhone.

The weight is off my shoulders, hated worrying about everything, I'll rent everything I'll ever need.

[Someone's thinking, 'you guys are nuts', lol.]
 
NorBro said:
Yup, it's mentally debilitating (the strong OCD).

At this point I don't own a single piece of camera gear besides my new iPhone.

The weight is off my shoulders, hated worrying about everything, I'll rent everything I'll ever need.

[Someone's thinking, 'you guys are nuts', lol.]
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Wow, interesting. I thought for sure you had a warehouse full of gear ;)
 
scorsesefan said:
Thanks, Norbro. Yes, the one you circled. It's most visible at f11 up.
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That's your problem right there. It's crap on the sensor. No digital camera should be used beyond f/5.6- f/8 because of this problem. That's the 2nd reason why we have ND filters. I'll bet every one of my removable lens cameras would show spots at f/11 when shooting a sky or other plain background. But shoot wide open and it all disappears.

Easy enough to fix. Turn the camera off, take the lens off, and shine a flashlight in there. You'll probably see that dust and others. Use a lint-free swab (looks a q-tip but not a q-tip) to blot it off. Don't scrub. And remember, the image is flipped on the sensor, so if the spot is at the top of the screen then you'll see the dust at the bottom of the sensor.

You can easily fix the shot in Resolve by drawing a power window around it, adding some feathering, and then cranking up the blur to make it disappear.
 
Doug Jensen said:
That's your problem right there. It's crap on the sensor. No digital camera should be used beyond f/5.6- f/8 because of this problem. That's the 2nd reason why we have ND filters. I'll bet every one of my removable lens cameras would show spots at f/11 when shooting a sky or other plain background. But shoot wide open and it all disappears.

Easy enough to fix. Turn the camera off, take the lens off, and shine a flashlight in there. You'll probably see that dust and others. Use a lint-free swab (looks a q-tip but not a q-tip) to blot it off. Don't scrub. And remember, the image is flipped on the sensor, so if the spot is at the top of the screen then you'll see the dust at the bottom of the sensor.

You can easily fix the shot in Resolve by drawing a power window around it, adding some feathering, and then cranking up the blur to make it disappear.
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Thanks for the helpful advice, Doug. I've swabbed the sensor probably ten times so it's definitely inside the sensor block. I think ND is probably the best solution short of sending it in to Canon and there's no guarantee that $300 later more dust won't settle in there...
 
scorsesefan said:
Thanks for the helpful advice, Doug. I've swabbed the sensor probably ten times so it's definitely inside the sensor block.
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You'd know better than I would since you actually have the camera in your hands, but with that said, I've never encountered any dust on the sensor of my Sony or Panasonic cameras that couldn't be removed the way I described. But then again, I don't worry about it too much because I shoot wide open 99.9% of the time.
 
Doug Jensen said:
You'd know better than I would since you actually have the camera in your hands, but with that said, I've never encountered any dust on the sensor of my Sony or Panasonic cameras that couldn't be removed the way I described. But then again, I don't worry about it too much because I shoot wide open 99.9% of the time.
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Yeah, and that's exactly what I told Canon. I've owned fs5, fs7, a7siii, fx3, and fx6 and not once did dust enter the sensor block. They didn't want to hear it...
 
scorsesefan,

I've used Photo Tech many times for camera repair, they are very good. They used to be located on 13th street in a large space with their techs in the same room and a counter in front. So you could go in and if they were slow they would look at your camera while you were there. A few years ago they moved up to west 30s a few blocks from B&H. I believe they now ship all repairs to a bigger facility in NJ. They used to offer free estimates not sure if they still do. I agree with the others, in your case its a waste of money and an easy fix in post.

Jeff
 
jcadge said:
scorsesefan,

I've used Photo Tech many times for camera repair, they are very good. They used to be located on 13th street in a large space with their techs in the same room and a counter in front. So you could go in and if they were slow they would look at your camera while you were there. A few years ago they moved up to west 30s a few blocks from B&H. I believe they now ship all repairs to a bigger facility in NJ. They used to offer free estimates not sure if they still do. I agree with the others, in your case its a waste of money and an easy fix in post.

Jeff
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Thanks, Jeff. I spoke to them a few times on the phone and I liked their vibe. They quoted me $285 over the phone. I sent it to Canon and they quoted me over $400 but offered a 20% discount because I argued that the previous owner had had the same service done over a year ago and that the sensor unit should be reasonably sealed and that I never had this issue with Sony. Then they basically lectured me about using the camera under adverse conditions and I told them I’ve had three indoor shoots since I got it. Anyway, good advice from you and others to just let it be and fix it in post or used NDs
 
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