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DPChallenge Forums >> Individual Photograph Discussion >> What the heck is the Blue Line in this one?
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Showing posts 1 - 12 of 12, (reverse)
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08/02/2005 12:48:31 AM · #1


Shot in RAW, 50mm 1.8 MKII ISO-1600 1/200sec, f/1.8, Manual Mode.

There is a mirror facing the Exercise Group that I am standing next to, Over head Flourescent Lights are all that we had on during this shot (it was way to hot for any more).

Can it be fixed.

Thanx in Advance...Andy
08/02/2005 12:50:14 AM · #2

It almost looks like you are shooting through glass and it's a reflection!

08/02/2005 12:53:46 AM · #3
Originally posted by Makka:

It almost looks like you are shooting through glass and it's a reflection!


I agree. It definitely looks like some type of reflection.
08/02/2005 01:05:36 AM · #4
No glass between me and the peeps...

Now that I look at it more, the line seems to be the exact angle of the flourescent ligthing (and/or rigging) that is above...

Is it possible to get lens flare from a flourescent bulb?

Message edited by author 2005-08-02 01:05:54.
08/02/2005 01:06:17 AM · #5
Do you have any kind of filter on. I have had this happen with a UV filter indoors before that caused a reflection to bounce between the filter and the lense. But maybe she is so hot that she burned your sensor up.

Message edited by author 2005-08-02 01:07:55.
08/02/2005 01:09:51 AM · #6
Looks like you had a filter on your lens, maybe a polarized? Look at the blue line it is parallel with the bright florescent light at top that is burned out.
08/02/2005 01:10:14 AM · #7
Originally posted by ph223048:

Do you have any kind of filter on. I have had this happen with a UV filter indoors before. But maybe she is so hot that she burned your sensor up.


Now that you mention it, I do have a UV filter on the lens.

This was an interesting shoot, very tough low light situation (my first).
08/02/2005 01:21:55 AM · #8

Ahhhh....problem solved!!

:)

08/02/2005 01:24:06 AM · #9
so the take away is that a filter is not a good thing for indoor shots?
08/02/2005 01:30:11 AM · #10

Oh, as for fixing it up, try cloning out the line!

08/02/2005 07:08:52 AM · #11
One more possibility...

Have you read how some lenses are being made for digital cameras? One of the things that they do different is to make the back lens elements less reflective.

The problem is the "shiny sensor" in the back of the digital camera bounces the image back towards the lens. Then the lens bounces it again back towards the sensor and you end up with ghosting.

So... if you remove the filter and STILL get the ghosting, you might need to get a new lens.

Note: I've never seen that effect happen with the 50mm 1.8 so this probably is not it, but I mention it just in case. (and come to think of it, the front element of the 50mm 1.8 is deeply recessed ... a filter in front of that is going to catch and reflect a lot of light - so the filter idea is most likely the cause)
08/02/2005 08:27:24 AM · #12
Yup, the filter is almost definitely the cause of this. It's certainly a ghost imnage of the fluorescent light fixture. This is the reason I don't use a filter unless I have to. They usually result in increased flare and ghosting, and somewhat reduced contrast.
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