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Posts posted by marshmellohi_
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I've been experimenting about my Samyang f/2 lens and I realized that the corners of my images aren't perfectly field flattened, and that brought me to the idea of lens corrections. In Lightroom, there is an option for lens corrections that correct both distortions and vignetting, so I was wondering if there were any disadvantages to applying those corrections to each and every one of my light frames before stacking? Correct me if I'm wrong, but I imagine this would correct the stars in the edges of the frame a noticeable amount, as well as make background calibration easier with vignette corrections. Thanks!
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For reference, I do AP in Bortle 6 suburban skies, and I have a Samyang 135mm f/2 lens along with my Astronomik 12nm clip-in filter. I normally use my Canon 2000d for AP, but recently a relative gifted me a Canon 700d that he barely used. I find the Canon 700d to be so much more flexible UI-wise with its rotating screen, sensor cleaning feature, etc. However, it has an 18 MP sensor, while the 2000d has a 24.1 MP sensor. Additionally, the 700d was released in 2013, while the 2000d was released in 2018. I’m struggling whether I should choose higher megapixel count for lesser features over lower megapixel count for more features. Personally, I haven’t had much time for imaging but I just wanted to get an idea of what people thought elsewhere.
Lens Correction Question for Lightroom
in Discussions - Software
Posted
Wow, I completely forgot about the existence of flat frames! Thanks, I feel dumb for forgetting about them 😅
Also, thanks for the detailed response, your explanation really cleared up how distortions work.