Dust?

[sepiareverb]

Shot this image last night, with a 35/2.0 V4 on a Monochrom with new sensor, and saw all kinds of spots in the image. Never noticed anything in regular shooting, don't really see dust in it. Thought at first dust in the air, but they are all the same shape?





Some real strong internal reflections at the bottom center of the light from the top center, so lots of light bouncing around inside the lens here.

 

[airfrogusmc]

What shutter speed were these shot at? Just curious.

 

[sepiareverb]

I was ranging between 1/30 and 1/125 at ISO 4000 most of the night. Just putting the camera away I see a nice big fingerprint on the filter. I was several drinks in by the end of the night. Don't think I'd see spots like that off the filter tho?

Now I'm wondering if they're also internal reflections from the lights- some multi-bulb units. I've shot this band a lot and not seen this before, but I've also not shot with this lens before. Usually a 28 or 50.

Oh, and this was shot wide open.

 

[Bill Clark]

Hard to tell here on the internet.


My guess:

Looks like dust to me probably on the sensor. If you take the lens off then make an image in very dim light still see the stuff? They can be removed in PS but that would be a PITA to me anyway.

After several drinks they may go away! Just kidding!

That's why I rarely change a lens on my digital cameras but when I do I have the camera turned off. Static electricity.

https://havecamerawilltravel.com/photographer/changing-lenses

 

[airfrogusmc]

Or light streaks from something reflective the air? When shooting at slow shutter speeds like 1/30 I can sometimes get those kinds of things from small lights or reflective things in the frame from camera movement. The thing that makes me think it might be that is the same type of shape in different places.

 

[David Hughes]

I'll second that.

 

[Michel154]

i would say its dust flying in the air backlit by the stage lights

 

[Darthfeeble]

I have had several cameras with dust on the sensor and the spots always show up as dark. When on a dark area of the picture they are invisible. These seem to be something in or on the lens.

 

[sepiareverb]

Thank you all.

I've gotten dust before, also dark. Lots of shiny things in this bar, and many Edison bulbs all over. Some gremlins somewhere are chuckling.

 

[Darthfeeble]

I'll bet that if that were in color you would see rainbow colors to those light bits.

 

[menos]

Doesn't look like sensor dust at all.
At such wide open apertures sensor dust will be almost always entirely invisible.

This looks more like either strange reflection pattern (dirty filter in combination with exotic back-/side light from the stage) or like something in the air in combination with camera shake (notice the similar shape of the patterns - looking like camera shake to me).

 

[jammcat]

It's dust particles illuminated by the stage lights.
I take it that you don't shoot music/theatre often? 🙂

 

[mpaniagua]

It's dust particles illuminated by the stage lights.
I take it that you don't shoot music/theatre often? 🙂

Agree. They are long shapes because they are floating in the stage. Due to slow speed, they left a trail on the photo.

Happened to me the few times I made the same kind of photography (stage performance and the like).


Regards

Marcelo