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PostPosted: Fri May 04, 2012 7:43 pm 
Hi just buoght the
SIGMA DC Macro 17 - 70 mm F/2.8-4.5 second hand on my nikon d90 how do i get below f4

with the 70-210 i set ap at 22 and camera does the rest
thaks steve


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PostPosted: Sat May 05, 2012 2:12 am 
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Joined: Thu Jan 26, 2006 10:41 pm
Posts: 366
Hmmm - might need a little more info, but basically run the camera in aperture priority and you set any aperture you like.

Are you referring to an aperture ring on the 70-210? I'm not familiar with that lens, but there isn't one on the 17-70, is there?

Basically, you would run the aperture through the rear control wheel and all should be good.

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PostPosted: Sat May 05, 2012 7:11 am 
hi
yes it is a aperture ring on 70-200 have tried the 17-70 on a mode wont go below f4 in auto should it not pick the lenses lowest in low light
thanks for your reply


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PostPosted: Sat May 05, 2012 9:38 am 
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Location: The Netherlands
Just turn the Mode dial to ''A'', and turn the front wheel to adjust the aperture. That should work.

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Panasonic DMC-FZ18, Panasonic DMC-FZ28, Canon G5, Canon 350D, Canon 50D + BG-E2N
Tamron 17-50 2.8, Canon EF 70-200mm f/4L USM,
Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies


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PostPosted: Sat May 05, 2012 10:15 am 
Thanks rubin
tried this goes from f4 to f32 ? lens or camera faulty


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PostPosted: Sat May 05, 2012 1:49 pm 
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Location: Germany
You need to do two things to get below f4.5:
1. zoom out to 17mm
2. set focus to infinity
Now use the aperture ring again.

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PostPosted: Sat May 05, 2012 2:01 pm 
just tried this lens on a d300 and would not go below f4 obviously something wrong with lens
thanks everyone


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