james holdsworth
Consulting Biologist
I may have missed something but why not compare the Zeiss to the Swaro 8x25? The other two are going to differ in obvious ways.
I may have missed something but why not compare the Zeiss to the Swaro 8x25? The other two are going to differ in obvious ways.
Does the new CL830 employ some kind of ED element in the objective? or it's just an achromat?
On Swarovski website, EL has "fluoride-containing HD lenses", SLC is rather vague for saying they use "HD optical system" , but on CL the website says nothing.
It has Swarovski's Swarodur, Swarobright and Swarotop coatings.
https://aa.swarovskioptik.com/download/pdf/5497475-TD.pdf
The EL has Swarotop, Swarodur, Swaroclean and Swarobright coatings.
https://aa.swarovskioptik.com/download/pdf/5222839-TD.pdf
Bob
These said nothing about whether ed glass is used or not.
These said nothing about whether ed glass is used or not.
Of several of the 8x30 Swarovski binoculars, I have not found them needing ED glass.
They perform well, and CA is not an issue at all. So I would not be concerned at all.
As far as CA goes, and that is where ED or HD glass would be important, it is not as important in the
smaller sizes, compared to 40 mm and larger.
Jerry
Actually CA is the single biggest issue of CL series.
Not being sensitive to CA doesn't mean its not there....I have read user reports of ''no issues'' with CA before [various models], then try them myself and find CA to be obvious and troublesome.
I think coating has noting to do with CA correction.
It's due to the glass material.
I can live with the CA in my CL companion, but not satisfied with the sharpness, my little zeiss 8x25 victory is much sharper.
That is interesting.
How is Chromatic Aberration corrected in binocular lens glass?
Bob
I did not know why you kept talking about coatings, now I understand.That is interesting.
How is Chromatic Aberration corrected in binocular lens glass?
Bob