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This sounds like a misunderstanding to me.
"He puts a little more plus".. compared to what?
Many hyperops wear a weaker correction (compared to optimal) until they're 40. When presbyopia happens...

Please share when you publish!

Found this and still looking

Anything new on your side?

Help!
I wrote a few companies and noone knows or wants to share such info.
I need refractive index for 3 colors in all materials. Any lens producers here?

Please fill...

lol, kinda both..
I'm trying to prove myslef wrong, to see if I'm right.
I'm also trying to show how Abbe is an 'abstract' number, especially if you don't know what to do with it. Kind of like Dk...

Some advancement on the topic but I need to gather more data. I actually realized something that completely changes my understanding of Abbe, but I have to make many calculations trying to prove it...

Thanks everyobody for sharing knowledge.
I enjoyed the 'war between optics and cosmetics' that has all the info I need, except it's for 2mm center thickness. My question is how much chromatic...

Hi,
We know that on paper ABBE number describes amount of dispersion. But this is not inherited property of a real lens - in a real lens, in order to describe dispersion, we have to include another...