The nice thing about the lens database is that it is composed of text files that are easy to edit. Once I added an entry for my lens and added settings for the OS lens everything worked ok again.Īnyway, thanks to this ASP forum post and this Bibble forum post I was able to add my lens to Aftershot Pro.
Only the OS lens is mentioned and I presume the non OS lens was removed in Bibble 5 by error. Unfortunately for me there’s no mention of “Sigma 18-200mm DC” in the “Canon Lens Table” or profile_canonlenstable.txt.
Ptlens profile pro#
Bibble 5 and Aftershot Pro think my lens is the “Sigma 18-200mm DC OS” but my lens doesn’t have an Optical Stabilizer! Bibble 4 probably detected the lens correctly. In the lens correction widget of Aftershot Pro you’ll see an “Uncalibrated Lens” message if your lens isn’t there.īibble 4 supported this lens and I only realised today that a bug in Bibble 5 and Aftershot identified the lens incorrectly and led me on a merry dance across the Internet.
Unfortunately not every lens is supported. The bottom of the sign isn’t straight but after correction it’s much better. The middle of the image is clearly bulging out. The animated gif above shows you what that distortion looks like in my favourite zoom lens, the Sigma 18-200mm DC. You won’t even recognise the distortion unless you’re looking for it but quite often it can look like straight lines are slightly bent or bulging. Bibble 5 and Aftershot Pro have a useful lens correction function that will fix the distortion created by a camera lens when a photo is taken.
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