Mayfly naiad cerci (edited. larger images added)

Charles Krebs · Post by **Charles Krebs** » Wed Oct 28, 2009 12:48 am

These are sections of the three "tails" on a mayfly naiad (nymph).

Brightfield illumination. 8.3X on sensor using 4/0.16 S Plan Apo.

Darkfield illumination. 8.3X on sensor using 4/0.16 S Plan Apo.

Brightfield illumination. 21X on sensor using 10/0.30 S Plan Apo.

Hindpool · Post by **Hindpool** » Wed Oct 28, 2009 9:16 am

Charles -
Superb lighting to match your fine plan-apo; a delicate subject beautifully captured. I had to consult Britannica to discover that 'cerci' are 'sensory appendages on the 10th abdominal segment of many insects'. I try to learn something new every day . . .

Thanks for your earlier tip about the Vario-Orthomat manual. I am familiar with it, all 36 pages, but it covers the Leitz Vario-Orthomat camera system as a whole - something that digital has made rather redundant. I have been playing with the zoom lens part and believe it will be very useful in overcoming the restricted field of view problem.

Thanks for your help - and inspiration!

Hindpool