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02-25-2010, 05:18 AM   #1
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[langtitle=nl]queston distance scale sigma 24mm 2.8mm AF[/langtitle]

Does anyone know what 22' , 11`, R`, `4, `11, `22 means on the bottom of the distance window positioned on a SIGMA 24mm/2.8 mm lens.
This listing is below the markings in metres and feet.

02-26-2010, 12:41 AM   #2
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It's the DOF scale and the numbers are the apertures; I assume 'R' is for infra red.

Last edited by sterretje; 02-26-2010 at 09:45 AM. Reason: missed the 'R' in the sentence and added it now
02-27-2010, 02:46 AM   #3
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thanks a lot . The R for infrared was the questionmarkt I was after.
Interesting but logical on older lens

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