Robert Moore
Well-known member
So far I have not noticed any glare issues and have been testing for it. I also have been looking at bright light sources to look for ghosting and have not noticed that yet either.
GoldenBear,
I am not so sure that a flat glass filter cannot affect rays of light coming at an angle into the optical system.
Whether this can lessen field curvature, I don't know.
I have noticed a change in focus with a 200mm camera lens, Tamron maybe, through a good single plate glass window.
I think that here there might have been some curvature in the window, but I don't see how. It could be a pressure difference, but this was not double glazing.
Regards,
B.
I got about twenty 4 inch f/1.8 lenses as a job lot.
Only two were usable.
The others all had sand blasted front elements, some almost opaque, because the techs forgot to put the front filters on.
They were used underneath aircraft for photography.
I also had a Zeiss 10x40 Classic rubber coated binocular.
The lenses were destroyed by the user who may have cleaned them repeatedly with a scarf on his sandy beach.
The binocular came from a seaside town.
I found it hard to believe anybody would treat optics like this.
But personally, I have almost never used filters even with my Minolta cameras on the beach.
My lenses and cameras still look almost new after nearly 50 years.
The cameras always had an ever ready case that took about one second to drop the front and take a photo, with the close fitting rubber double grip front caps dropping into the front of the case.
B.