What does 1:1 mean in this specification?


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dRebelXT

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May 14, 2005
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Why don't the manufacturers name their lens like what Tokina does, give every lens a
model name, like 242, Bigma, etc?


Tamron SP AF90mm F/2.8 Di Macro 1:1 Model 272E lens

Tamron SP AF 90mm f/2.8
Di Macro 1:1
Model 272E lens
by Paul Fisher
 

able to produce up to life size magnification
 

user111 said:
able to produce up to life size magnification
What does life size magnificatin mean? :rolleyes: I thought the
size of an image is determined by the printing & display devices.
 

means a 1 cts coin will be exactly the same size on the film/sensor..
 

kex said:
means a 1 cts coin will be exactly the same size on the film/sensor..
I see. Thank you.
 

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