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Canon EF 70-300 4-5.6 IS USM

Started Aug 5, 2015 | Questions thread
tatslau Regular Member • Posts: 298
Re: Canon EF 70-300 4-5.6 IS USM

JLN74 wrote:

So shot raw an post process the CA out. Are there files that do it for you? What program do I need to download (free is best . . .)

The images I was talking about was shot in jpeg and it seems like there is not much you can do once that file is written.

Thanks for the info!

Yes you can remove CA out of jpeg. I downloaded oldest version of Photoshop PS2 free legally:

http://www.redmondpie.com/download-adobe-photoshop-cs2-for-free-legally-while-you-still-can/

And use its "Filter-Distort-Lens correction" feature.  You can NOT ONLY remove CA, but also vignette, barrel and pin cushion, and even perspective distortions:

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Tat S Lau

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