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Understanding Macro Lens Apertures (Micro-Nikkors)...

davidnholtjr

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"RE: Understanding Macro Lens Apertures (Micro-Nikkors)..."

davidnholtjr Registered since 15th Apr 2007
Sun 18-Jan-09 08:12 PM

Call me dumb, but I still don't understand this.

I have the Sigma 150mm F/2.8.

So you can only get f/2.8 at infinity and at 1:1 you get f/5.6. So this means at 1:1 you lose 2 stops of light? If so, then why is it not called a f/2.8-5.6 lens because it changes apertures like on a cheaper zoom lens?

Later,
David
http://davidthenikonuser.blogspot.com/

D700 | D300 | D60
28mm | 35mm | 50mm | 150mm Micro | 300mm
24-70mm | 70-200mm | 80-400mm | 200-400mm
TC1.4 | TC1.7 | TC2.0

Pinned topic Understanding Macro Lens Apertures (Micro-Nikkors)... [View all] , SzennyBoy Awarded for his shared hands-on experience in macro photography within the community forums and the Resources , Sun 29-Dec-02 10:02 AM
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