Upload & Sell: Off
An old experiment with real a life subject:
180/5.6 + tube (at least one crazy) combinations with my ex D3:
Nikkor 180mm f/5.6 ED ais close up comparisons por labecoaves, no Flickr
Comparison of magnifications when using the Nikkor 180/5.6 ED ais at MFD + some tubes. All shots with D3 at ISO 200 + tripod + remote shutter.
Top: no tube, f/2.8 at 1/60s; magnification 0.133x; distance subject to sensor - 1,75m.
2nd: 12mm Vivitar, f/2,8 at 1/80s; magnification ~0.2x; distance 1,3m.
3rd: PN-11 (52.5mm), f/5.6 at 1/10s; magnification ~0.42x; distance 86cm.
Bottom: 120.5mm (all Vivitar set 12+20+36mm + PN11); f/11 at 1/2s magnification ~0.8x; distance 73cm.