I'm an amateur astrophotographer, and I recently bought a Canon EOS R10 to attach to my telescope for taking pictures. I took some pictures yesterday and noticed a lot of chromatic aberration, either from the telescope itself or from the extra zoom lens I attached. I know there are special parts to correct this, but I currently don't own any of these, so made sure to save my images as CR3 and downloaded Digital Photo Profession 4 to see if I could correct it there. The program tells me that I have to register a lens, which I can't do since I didn't use a normal lens. Is there a way to correct chromatic aberration without registering a lens, or a different program I can use? I'd rather not use Photoshop, unless there is no other option.
https://support.usa.canon.com/kb/s/article/ART162839 DPP4 / Lightroom/ Photoshop all have manual ability to dial in adjustments... Quick google search gave the artical above and #8 shows that there is a CA module you can check and adjust the sliders yourself.
It is a great inconvenience that DPP4 will not allow CA correction unless you are using a Canon lens. The best thing to do is use DPP4 to perform necessary PP and then convert the file to a TIFF so that you can do CA correction in another editing program e.g Photoshop, Lightroom, Paintshop Pro, GIMP or any of the many others.
That's a shame. I get why they would do that from a business perspective, but it's surprising since they did release a line of cameras made for the exact purpose I'm using them for. Thanks for the reply though, I'll see how far I can get with GIMP.
I don't use GIMP myself, although I did try it many years ago so I am not that familiar with it but do believe you may need to install an add-on module for CA correction.
I have used either of the ones I am about to mention as i prefer Lightroom and Photoshop, but I understand that Darktable and RawTherapee are popular free editors.
