Lens correction

If you want to find out about the quality of lenses you should refer to the dxomark website.
http://www.dxomark.com//

It is a complete database of new lenses including most prices.
Search Digital Cameras by Features and Specifications | Neocamera

Neocamera provides a better search for features of lenses.

Dxomark provides lens databases and lens correction software that is most complete.
http://www.kenrockwell.com/tech/dxo/optics-pro.htm

For commercial software, Adobe Photoshop's Lightroom is good. You can download a trial version for 30 days.
 http://www.adobe.com/sea/products/photoshop-lightroom.html

To know more about lens corrections you can read this website.
 http://photographylife.com/lightroom-lens-corrections

It will direct you to the free software on how to create lens profiles yourself.
I followed the tutorials and managed to correct my Sony NEX3N pictures because its lens database is available there but didn't commit because I don't see much point. Probably my camera did the correction itself when it processed the RAW to JPEG.


For the free version, Lensfun is the software. It uses panotools as its base so it is also supported by Hugin and other commercialised software.

 http://libregraphicsworld.org/blog/entry/creating-lens-distorsion-models-with-hugin-lens-calibrator
You can create your own lens profile for Lensfun and therefore ufraw.

If you are lazy, you can upload the test pictures to this website in order for it to calculate your lens profiles.
http://wilson.bronger.org/calibration

Other RAW mode processing software mentioned there are:
 Darktable, Rawstudio, digiKam, Imagemagick.
What is not mentioned in Ufraw which I actually test and quite easy to use but not its lens correction facility.  I have difficulty because I don't have the lens profile for my camera, a Sony NEX3N.


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