quoting John Shaw from his book "closeups in nature":
"The magnification obtained with stacked lenses is roughly given by this formula:
Magnification = focal length of prime lens / focal length of reversed lens."
Jostein
----- Original Message ----- From: "Kostas Kavoussanakis" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Monday, May 16, 2005 5:07 PM
Subject: Re: Reversed lens observation
On Mon, 16 May 2005, Jostein wrote:
an adapter with two cokin rings and epoxy glue, and tried the FA 50/1.4 reversed in front of the A*200/4 macro.
<snip>
Optically it seems like a good solution for 4X macro in the field.
Can you point me to a reference for the calculation of the magnification?
Thanks,
Kostas
