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If you plan on ever doing widefield imaging with normal lenses, you'll need a piece of glass to correct the refractive index (or something like that) so that you can focus at infinity.
Might as well go with an IR/UV cut filter and then you can use it with anything.
Some say that the CLS clip in corrects well enough to use lenses without a filter, but i'm not sure.
I'd fit the filter anyway, in case you're ever under a dark sky and don't need the CLS.
If you decide to mod it, DO NOT use JJCamera in Sydney for the service though.
The filters they use do not correct enough, and they blame your equipment for it. (mine was a Nikon D7000)
Worst service I've ever used, for anything...ever.
They have a service on eBay too, but by a different name.
I would do it yourself or send it somewhere more reputable.
Cheers
Bob
Last edited by bobbyf; 30-06-2016 at 01:44 PM.
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