Re: How do you test if camera lenses match?

[P3D <PTWW@xxxxxxx>]

George Themelis writes:

>If I was going to test lenses for FL match I would take two slides and
>mount them in an Albion mount.  By aligning the bottom of the images
>I can see how well they match at the top by using the aluminum mask
>as my reference.  
>
>Now, that it simple!

Recent rumblings indicate that assuming access to Albion mounts could
soon (or already) be a problem.  Wouldn't RBT mounts be ideal for this
test?  The guide pins would assure alignment of one side of the two
chips with minimal fuss.

Also, for those who may have missed it, I recall a discussion some time
back about using a (projected?) grid for comparing focal lengths of two
lenses.

Paul Talbot


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