thank you so much sir for doing these videos for us. They are very helpful i have been watching your videos since the first semester of my second year and i have benefited a lot from them, plz keep uploading more. much love from South Africa🥸😊
Would you mind to clarify a few points here? While discussing Astigmatism you mentioned marginal rays as paraxial and while discussing field curvature you pointed out parallel rays as paraxial rays. Also, in distortion you completely messed up the magnification, saying that barrel has higher magnification close to edges and pincushion has more magnification at the center. It’s other way round though.
Thank you for your helpful comments the part related to barrel and Pincushion has been removed already to avoid the confusion as it was later realised that the concept has been explained vise versa
