Quote:
Originally Posted by JA
Which make and model of 135mm lens do you have? What is its front filter thread diameter? It is possible that something MIGHT be possible without too much compromise depending on your lens aperture.
Depending on the lens performance you may even like the lens stopped down a little. In that case the restricted circular aperture offered by front mounted filters would be better than stopping down the lens via its normal aperture blades as there would be no attendant diffraction spikes induced by the aperture blades of your lens if stopped down.
Best
JA
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Sorry, didnt see this reply!
It's a Rokinon 135mm Lens
https://www.amazon.com.au/Rokinon-13...33211358&psc=1
It has a 77mm thread on the front. I have seen light pollution filters with a 77mm thread but unsure yet if these are any good/better than using a Astronomik or Optolong clip in filter.