Any photography buffs care to lend a hand?, page 1

So i was playing around with my new tripod and some longer exposures on my EOS t1i and decided to put myself in one of the photos; was reviewing them and saw this:

full size: i.imgur.com...

Any theories? i suppose it could be the smoke from the lantern but wow, what a pattern! Nothing quite like this in probably 30 - 40 other shots.

Cheers and so very much Love my friends!

reply to post by phroziac

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Thanks!

f 3.5 / .6"

Originally posted by soulshn
So i was playing around with my new tripod and some longer exposures on my EOS t1i and decided to put myself in one of the photos; was reviewing them and saw this:

full size: i.imgur.com...

Any theories? i suppose it could be the smoke from the lantern but wow, what a pattern! Nothing quite like this in probably 30 - 40 other shots.

Cheers and so very much Love my friends!

Looks like Michael Jackson in casual garb snuck into your backyard.
Some scary s**t right there!

Get Away! Get Out NOW!!

This is most likely a "mirror ghost flare" effect that occurs when a bright light is shot.

The flare is generally due to the presence of a protective filter in the camera, after the lens. The flare is a mirror ghost of the original bright object, with the image center serving as a point of symmetry (or point reflection).



All dimensions are, most of the time, perfectly preserved, which suggests that reflections at planar surfaces are responsible. However, this is not exactly the case in your photo, as:
1- the line (green) that join the light source and its ghost image do not exactly pass through the photo center and
2- the length of the two segments from the center to the light source firstly and to the ghost image secondly aren't the same.

This is due to the fact that the filter on this camera is not plane, but curved.

Let's see how it works on a planar filter with the figure below:



Black arrows indicate the light rays of a distant bright light source that form a regular image point on the film (1). Values for the reflectance of undeveloped photographic film vary from 15% to 40% [see sources 1,2], which makes the film a much stronger reflector than any optical component in the lens.

So, a significant percentage of the light is reflected off the film, partly specular and partly diffuse. (For convenience, we will consider that paths of the reflected light are the same and thus are already drawn for the incident light).
Thus, the blue arrows indicate light reflected from the film. This light encounters the filter, which specularly reflects a small fraction (red arrows). The red rays are parallel and consequently focused onto a point on the film. (2)

The virtual source of the mirror point is traced by the dashed black lines. Note that the blue rays reflected by the film seem odd from the viewpoint of specular reflection; they merely illustrate the fact that all light rays that originate from a single point on the film, and which are collected by the lens, emerge parallel at the filter.

reply to post by elevenaugust

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Wow, thank you!

That was much more in-depth than anything i was expecting; i learned something.

Cheers!

reply to post by soulshn

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Now that i think about it though; this is a new lens, and i do not have a filter of any type in front of it.

Originally posted by soulshn
reply to post by soulshn

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Now that i think about it though; this is a new lens, and i do not have a filter of any type in front of it.

Well, it can also occurs with any external lens, provided that the light source is bright enough.

The lens construction is impressive and there are so much lens in cameras that undesired flares effects cannot be 100% avoided.


Canon TS-E 17mm f/4 L lens

The risk of being confronted with filter flare reduces with a smaller focal length, a smaller aperture (larger F-number), an increased separation of highlights from the image center, and with a better filter quality. However, by far the most secure way to avoid this type of flare is to omit the filter altogether.

I like the shot, and the lens flare kind of adds a little "something extra" that works pretty nice with the general theme. I'd probably crop out most of the patio and put the guy just off center and balance the shot off the "ghost" if it were my shot. Then, the anomaly would be much more visible, with sort of a narrative emerging as a result. I'd be pretty happy with that photo if it were my own.

Something like this..... I call it "Dreamtime"

Damn...the photo is bigger than I thought. Here's the url - files.abovetopsecret.com...

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