Internal lens flare?

[ichiu]

I took these two shots last night. The first one is with the Canon 85mm 1.8, 30sec, f11, iso 200. The second is with the 50mm f1.8, 20 sec, f11, iso 100. What gives? Is this internal lens flare? I tried changing angles and for some of the shots it helped. Thanks.


Ivan

[Franglais]

I took these two shots last night. The first one is with the Canon 85mm 1.8, 30sec, f11, iso 200. The second is with the 50mm f1.8, 20 sec, f11, iso 100. What gives? Is this internal lens flare? I tried changing angles and for some of the shots it helped. Thanks.


Ivan

The form of the artifact in your first image looks just like the lights on the bridge. This makes me think it might be a reflection off something in the camera being reflected back onto the sensor/film. I seem to recall reading about this happening with digital image sensors, which have a shiny surface. But this happens with film cameras as well. It might even be in the lenses.

Charles

[another view]

Did you use a lens hood? That may solve the problem or at least help, night shots seem to be more prone to flare.

[ichiu]

Thanks Charles for the insight. That's the first I've heard of digital cameras prone to this. If that's so, that's going to suck. I've never had this problem with my night shots on film. And this is the first i've seen on the 10D, never had this problem with my digirebel. hmmm... I think I need more investigating.


Ivan

[Sebastian]

Was there a filter on the lens? I had all sorts of ghosts and reflections until I stopped using UVs. I have taken several shots with the 10D upwards of 30 seconds, no reflections here. Good luck.

[Franglais]

Thanks Charles for the insight. That's the first I've heard of digital cameras prone to this. If that's so, that's going to suck. I've never had this problem with my night shots on film. And this is the first i've seen on the 10D, never had this problem with my digirebel. hmmm... I think I need more investigating.


Ivan

I don't remember where I read that about image sensors being shiny. I don't want to start any false rumours. Sebastien could be right, I've had this sort of thing happen with a non-multicoated UV filter.

Charles

[Sebastian]

I don't remember where I read that about image sensors being shiny. I don't want to start any false rumours. Sebastien could be right, I've had this sort of thing happen with a non-multicoated UV filter.

Charles

Charles,

Relax, you are not the first to mention the relfectance of the sensor.

I have heard about it before, but it seems to be one of those once in a million sort of things. Now that I think about it, I only heard about this with the 14n, and only with certain lenses, at certain apertures. Apparently it's something that a new coating is supposed to fix on the new SLR/n.

Anyway, you're not imagining things.

[ichiu]

Was there a filter on the lens? I had all sorts of ghosts and reflections until I stopped using UVs. I have taken several shots with the 10D upwards of 30 seconds, no reflections here. Good luck.

You may be right. I had a UV filter on the 85mm. But I took it off after I noticed the wierd reflections. That seemed to work. But, there's no filter on the 50mm and I can't seem to figure out where that flare is coming from.


Ivan