...The filter will only hurt the view in a big way...
I just bought these filters from B&H and thought I would share. I wanted to protect the front objective lens and keep the optical performance of the HT.
Does that count as 1 more, or 2 more, air to glass surfaces?
(virtual bb stacking question)
-Bill
Astro users use colour filters when viewing planets to enhance features not seen without filters.
Also for viewing deep sky objects.
For imaging, a filter wheel can have up to ten filters.
A good clear filter will have about zero impact at 10x.
It might start to degrade the view at 100x and will probably be noticed 200x.
I wonder if in fact the water repelling layer gives 100% transmission.
I doubt it.
I would query whether 99.8% total transmission is achieved in practice.
The Canon 18x50 IS has threads.
Personally, I only use polarising filters for viewing and photography.
My Minolta lenses rarely had filters and with careful use I don't think I ever scratched one.
Wearing polarising sunglasses, a weird thing happens with the Canon G15 screen if I turn it upright.
The screen goes completely black and I can't see anything.
But the viewfinder still works.
I think that B and W used to be part of Schneider, but am not sure.
B.
My experience is this. I had a camera lens filter, a UV, or skylight filter, and tried it on my
Nikon ED50 spotting scope, it affected the view markedly, by darkening the view, and it also
seemed to give off some reflections.
Binoculars are optimized for anti-reflection by using very high quality coatings on the objective
lenses. All "nano" means is just marketing jargon.
So, I don't think much of filters, they will offer protection, and that is good, otherwise not so good for
optimal viewing.
Jerry
My experience is this. I had a camera lens filter, a UV, or skylight filter, and tried it on my
Nikon ED50 spotting scope, it affected the view markedly, by darkening the view, and it also
seemed to give off some reflections.
Binoculars are optimized for anti-reflection by using very high quality coatings on the objective
lenses. All "nano" means is just marketing jargon.
So, I don't think much of filters, they will offer protection, and that is good, otherwise not so good for
optimal viewing.
Jerry