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TC + 90mm f/2.8 G Macro via extension tube

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On Facebook I saw that someone used both tele-converters (1.4x and 2x) together with 400mm f / 2.8 via Kenko extension tube 16mm. Extension tube served as a bonding device between teleconverters. So he had on body TC 1.4x + Ext. Tube 16mm + TC 2x + 400mm f/2.8. AF worked and there was no significant drop in image quality. So he had 1120mm lens.

I wonder if a combination of TC with extension tube and a 90mm f / 2.8 G OSS lens would work similarly. What do you think?
Can anyone try it and let me know?



Edited by SAF Admin
Please don't post images you don't have the copyright. Thanks

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