Expansion & Compression

 

Example 1:

Educationally, this is the best example for the novice that just spent too much money on an 18-200 Quantary lens.  The image below accurately represents the effect of expansion and compression.  There!

Lenses can be \frac{1}{f} = (n-1) \left[ \frac{1}{R_1} - \frac{1}{R_2} + \frac{(n-1)d}{n R_1 R_2} \right], CRAY

 

Example 2:

Of course things…anatomical.  I’m not here to educate completely everyone.

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One thought on “Expansion & Compression

  1. Lipitor says:

    how much for the double exposure? also, when you gonna give away some of them tickets?

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