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Message: <blockquote data-quote="Paul Corfield" data-source="post: 3227448" data-attributes="member: 19132">Did a test with the Fujinon TN to see how far I could push it for magnification. For the final image I used all my extension tubes between the TN and the camera to give 4.7X mag.  On the 600mm SW80ED that's 2820mm and with my Nikon D3300 crop factor it's 4314.6mm equivalent.First image is scope only, 2nd image is with the 1.8X TN mounted straight to camera, 3rd image is with a 50mm good quality macro tube between camera and TN and last image is with 180mm of macro tubes. Wind was gusting to around 40mph when I did these. All taken with tripod axis loose and hand holding the camera. Surprised the bird just sat there singing as it was getting quite blown around.Paul.</blockquote>