DScience
No longer a newbie, moving up!
- Joined
- Apr 12, 2009
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- Denver, CO
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Funny thing is I just came back from experimenting with bokeh christmas lights and then saw this.
What lens did you use in your original post Dscience? My 18-70 cant get good bokeh lights for ****.
I posted one of these already this morning, but since you made a themed thread...
CANON---Santa doll shot Dec 15, 2007 with Canon 70-200--I didn't like
the cat's eye effect caused by the rear element shroud
Canon has on many of its L-glass lenses. My little son
put this Santa doll on the couch near the coffee table so
that "the real Santa" would know where the cookies would
be placed on the night of his arrival a few days later.
Funny thing is I just came back from experimenting with bokeh christmas lights and then saw this.
What lens did you use in your original post Dscience? My 18-70 cant get good bokeh lights for ****.
It was shot with my 105mm f/1.8. It was in front of a store, they had lights in the window, with this lil tree outside.
what I would suggest is to just set your aperture wide open, change cam to manual focus, and then just shoot your Xmas lighhts out of focus. This will just give you the feel of it.
I think you're probably pretty close. I suspect it has to do with the angle the light is coming into the lens, the distance from the camera to the subject, and other factors. But I honestly don't know.Derrel, so it's certain lens elements that cause the so-called 'cats eye' bokeh? The imperfect circles that resemble a cat's retina?
I have wondered about this! But since I have seen it with all my lenses, I thought it was a matter of distortion caused by the emitted light being off center from the focus point. My thinking was that only the light being focused on was coming into the lens at a straight line, hence the perfect circle from the wide open aperture. Then I thought that the 'cat eye' ones were caused because the light is being bent somewhat or refracted, and thus you get an imperfect circle.
Please explain, this is something that's bugged me.