optical formula

[petiot]

I am looking for some optical formulas (doesn't matter how complex it is) that would allow me to calculate the magnification factor for various type of lenses (based on the focale, minimum focusing distance).

anyone for good links?
Many thanks

Daniel

[G3]

I'm not sure if this is exactly what you are looking for, but here's a link:

http://www.mellesgriot.com/products/optics/gb_2_3.htm

[dtrayers]

Here's another option:

http://www.photo.net/learn/optics/lensTutorial

[petiot]

Thanks guys. botht links have been really useful to me.

Many thanks to both of you

Dan