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10/12/2005 02:24:56 AM · #1 |
| If I have a 1:2 300mm macro lens and add a x2 teleconvertor do I end up with a 1:1 600mm or just a 1:2 600mm? Wouldn't it be a 1:1 just being able to focus at the same spot only with twice the focal length? I hope someone understands this cause I just read it and I got a little confused. |
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10/12/2005 03:08:04 AM · #2 |
1:2 600mm. The lens in the converter is making this happen. Look at it this way; if the manufacturer wanted to turn your 300mm into a 600mm they would add another, magnifying lens inside the barrel right? (I realize this is a gross oversimplification) The teleconverter just makes that extra element removeable.
To get this lens to shoot 1:1 you need an extension tube, which will cost you your ability to focus to infinity.
R.
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10/12/2005 03:18:38 AM · #3 |
| Ok, got that. Now if I can focus on say minimum 12 inches at 300mm and I add a x2 will the minimum focus become 24 inches ,or some other number? |
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