View Full Version : What went wrong?
Rachellebee27
28th of June 2008 (Sat), 07:40
OK, I shot this photo yesterday. I know my focus was off... Anyways at the top there is this weird halo. I'm just wondering if anyone can tell me why, and what I did wrong.
EXIF- f/5 ss 1/125, 220mm, ISO200
The lens was my Canon 75-300 f/4.5-6 III
Thanks in advance for any help you all can be.
John_B
28th of June 2008 (Sat), 08:30
Rachellebee27,
My guess is its just strong out of focus backlight.
The same shot taken from a bit lower angle might help, or the use of flash would also help.
Rachellebee27
28th of June 2008 (Sat), 08:50
Thanks, I got it from lower and more to the right. I just couldn't figure out what was with the halo.
seaside
28th of June 2008 (Sat), 08:50
Nothings wrong. This appears to be out-of-focus highlights or bokeh. Lenses, due their design have unique bokeh characteristics or how they render the out-of-focus areas in the image. It is often sought after and used to enhance an image. It can also be an interference if it is too distracting.
neumanns
28th of June 2008 (Sat), 09:30
1/125 @ 220mm...
Try a shutter around 1/400
Rachellebee27
28th of June 2008 (Sat), 11:03
nak, oh nono not the bokeh, the halo...
Rachellebee27
28th of June 2008 (Sat), 11:15
OK, sorry about that weird rendering, and the bad gif, I've locked myself out of photobucket (I really should write down all my passwords somewhere, LOL!) so I'm stuck with POTN's attachments, and they thought my edit was too big, and then the highlights are messed up cause I had a wiggly baby in my arms trying to eat. Maybe I should just delete and re-post, but I'm off for a day with the family.
The red is the area that I'm confused with especially the green... Maybe it's just a by-product of a cheep (relatively) lens, the OOF flower, and the globular highlights in the BG. I'm just interested in figuring out the reason so I can work around it in the future. the outing was not to get flower shots, I just saw the flower off to the side on my path and bent down to capture it.
Thanks all!
Naturalist
28th of June 2008 (Sat), 11:15
I'm just wondering if anyone can tell me why, and what I did wrong.
EXIF- f/5 ss 1/125, 220mm, ISO200
The lens was my Canon 75-300 f/4.5-6 III
There are a couple of things going on here:
1. Shooting 1/125 when lens is at 220mm. Try to make a conscience habit of shooting your shutter speed at least as fast as your mm length. Example: At 220mm I would shoot no slower than 1/250 second.
2. You did not say if you used a tripod, this (and the slower shutter speed) accounts for the overall softness of the image.
3. Replace the lens! I had one of these and could not believe the "haloing" I was seeing even when I used a tripod. With bright sun, or strongly lit backgrounds, this halo effect is more predominant when shooting this lens over 200mm and gets worst when you push it to 300mm.
Box Brownie
28th of June 2008 (Sat), 11:17
Now you have 'marked' the part you are talking about I surmise this is "purple fringing" i.e. a chromatic abberation. Plenty of threads about it and some lens are more prone to it but whether the 75-300 is one of them I do not know.
:)
Rachellebee27
28th of June 2008 (Sat), 11:30
Wait where did the other advice go? I was enjoying looking it over, LOL! OK, now I've really got to go or my family is going to start yelling. Have a good day all!
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