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extension tubes on magnification of macro lenses
* Annika1980 wrote :
On Jul 23, 8:04*pm, Troy Piggins wrote: Lately I've been shooting with full set of extension tubes on, and I realise you lose infinity focus, but I've been wondering what the minimum magnification really is. I was out trying to shoot eagles one day and I had the trusty old Vivitar 2x on the 400 f/5.6. But for some stupid reason I couldn't get the damn lens to focus, even manually. My 400 f/5.6 has some focus problems anyway (it slips when focusing manually so using TCs becomes quite a challenge), but all I was getting was a blurry screen. I checked every setting I could think of and couldn't figure out what the hell happened. I even went through all the Custom Functions to see if I might have set something screwy. Then I finally noticed that the 2x wasn't the 2x at all, but was actually my Kenko 36mm extension tube that is the same size and color as the 2x. Oops! Haven't heard that one before! I've got the Canon TCs. They're white, metal, and much heavier than the Kenko black plastic tubes. -- Troy Piggins I always appreciate critique. |
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