Welcome to our community

Be a part of something great, join today!

Log in
  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Advice on Spots

JS Fendelander

JS Fendelander

Active member
Joined
Dec 23, 2009
Messages
38
Reaction score
0
Points
0
Location
Orange County, CA
I didn't think this looked like dust, but let me know what you think it is and how best to get rid of it. There is the line to the left of the baby's mouth, and another spot of the same in the brown cloth below. I changed lenses and still get it, so I think it is on the glass in front of the sensor...

The other two pictures are of a white piece of paper, I added the red circles in photoshop.

Thanks!

James Sebastian
 

Attachments

  • Dust Close up on Face.jpg
    Dust Close up on Face.jpg
    13.3 KB · Views: 0
  • White Paper close up.jpg
    White Paper close up.jpg
    34.1 KB · Views: 0
JS Fendelander said:
I didn't think this looked like dust, but let me know what you think it is and how best to get rid of it. There is the line to the left of the baby's mouth, and another spot of the same in the brown cloth below. I changed lenses and still get it, so I think it is on the glass in front of the sensor...

The other two pictures are of a white piece of paper, I added the red circles in photoshop.

Thanks!

James Sebastian
Click to expand...

It looks like it may be mold. Is it an old lens or one that has been exposed to the elements?
 
JS Fendelander said:
My lenses are about 8 years old, I haven't used them a ton. This spot though, is in my pictures when I'm using my Canon 50mm, and it is still there when I switch to my 24-70mm. :(
Click to expand...

What camera are you using? Have you checked to see if the sensor is clean on digital or if its film if the mirror shutter is clean?
 
If its in the same spot on each of the lenses it would seam as if whatever it is will be on the sensor itself. Have you happened to have any lasers hit the sensor?
 
well hopefully it is just some dirt or dust on the sensor that can be cleaned. Be careful when you clean it not to scratch the sensor. It might be wise to have a professional do it or send it back to RED to check it out. Where on the frame does this occur?
 
It doesn't look like dead pixels. Hope its nothing major. Let us know what it ends up being and ill keep my fingers crossed its just dirt.
 
Don't worry about scratching the sensor, as the OLPF is between you and the sensor. Worry about scratching that. But using a fresh lens tissues should not scratch that. So I would try dry cleaning the OLPF first and see what happens.
 
Get yourself a "sensor-cleaning" kit. Everyone who uses digital cameras for their living should have this stuff and learn how to use it. Don't worry, it's not as risky as you might think. You are NOT cleaning the sensor on the Epic or Scarlet (or on most other cameras for that matter), You are cleaning the OLPF filter that sits in front of the sensor. I use just three things for this:
  1. A loupe
  2. A blower
  3. A sensor swab, which you use with cleaning solution.

There are other brands of each of these things. But being able to clean your own sensor is an essential skill for a digital photographer or cinematographer unless you are lucky enough to travel with a good camera assistant most of the time.
 
This looks like debris on the actually sensor, which is strange. Dust on the OLPF isn't as defined but creates more of a soft shadow, or dark area. When the spot are well defined then it usually something right on the senosr it's self. I'd have Red look at this. It may need to be sent in for cleaning.
 
I thought usually you cant see dust clearly on olpf's or ir-cuts unless you are stopped down a lot or the dust is actually on the sensor itself beneath the filters?
 
Matt Ryan said:
What camera are you using? Have you checked to see if the sensor is clean on digital or if its film if the mirror shutter is clean?
Click to expand...

It's dirt on the sensor. A mirror shutter on a film camera can be scratched have fingerprints & dust on it, it's a non issue as it's not in the film path. A beam splitter is another matter.
 
Noah Yuan-Vogel said:
I thought usually you cant see dust clearly on olpf's or ir-cuts unless you are stopped down a lot or the dust is actually on the sensor itself beneath the filters?
Click to expand...

thats why i assumed whatever it is was on the sensor. Hope its not though
 
You must log in or register to reply here.
Back
Top