Quote:
Originally Posted by JA
It's not a Barlow, but you can use a teleconverter (a telecentric amplifier ) which is like a powermate to increase the focal length, typically 1.4, 1.7 or 2 times, and even stack them if you REALLY must.
Best
JA
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No need for stacking, tele-extender (as well as barlow) will have larger magnification if distance to camera is longer.