I am no expert but I think you will at least need to put a piece of glass of the same thickness, and possibly refractive index? I think I read about this in some detail on one of Roger Cicala's (lens rentals) posts. I have a feeling it was one about the machinery they recently bought for testing lenses. I also watched a video ages ago about removing the filter and thing there was something about it there too. I think that one was about a 300D.
This thread (or the fraction I've seen of it so far) is amazing! Thank you everyone, who's sharing their efforts and insight
I've lots to learn but I really, really want to! I've been threatening to convert my EOS M to Full Spectrum for a little while, thinking I might give it a go myself, having seen some online deconstructions etc, but I'm no expert on these things.
I love the idea of going FF/FullSpectrum like you have with the 6D, cazza132, your results are wonderful... but I think I'll start with the EOS M Is yours a total filter-removal job, and is this the preferred way for Astro-'togs? I'm aware there are various filter replacements with different frequency ranges for different results but if there's no reason to replace one bookend with another I'll be happy to go properly Full-Spec and filterless!
Also any advice on where to start with the essentials (tracking equipment etc? Software?), as direct advice or respected online resources worth reading through, would be super appreciated! I'll start with the rest of this thread, from the beginning, and take notes
Happy shooting, everyone!
7DII+Grip, 7D+Grip, 40D+Grip, 5D+Grip, EF 24-105 f4L EF-S 17-85, EF-S 10-22, EF 70-200 f2.8 L IS II, EF 2x III, Σ150-500, Σ17-70 f2.8-4 C, EF 50mm f1.8, 550EX, Triopo TR-985, Godox FC-16, Filters Remotes Macro tubes Tripod heads etc!
5D, 20D, 24-105, BG-E4, BG-E2N, 17-85, Nifty 50 pre owned. 😀