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As an adjunct to the Tangents blog, the intention with this forum is to answer any questions, and allow a diverse discussion of topics related photography. With that, see it as an open invitation to just climb in and start threads and to respond to any threads.
I have a sigma 15-30. Having just edited some files from a job (property photography) I have noticed a purple flare on almost all of my images. I have cleaned the front glass and it's still there. Not sure why it's there and the worst thing is I'm finding it very difficult to remove in PS ?
Comments
Do the images with the flare contain an open window/doorway like the sample you uploaded?
I think it's your lens with refraction from the outside light influencing the flare.
Have you just shot normal stuff outside (as long as there is no sun in front of you when shooting) to see if you can dupe the results?
More about sensor bloom, and how to avoid it:
http://www.digital-photo-secrets.com/tip/1175/how-to-avoid-blooming/