Newest 'aperture+lens+macro' Questions - Photography Stack Exchange

5 votes

3 answers

2k views

Can I force the aperture to stay open on macro lens?

I have a sigma 180mm f/2.8 lens, which I bought because it was the largest aperture I could find that focuses around 0.5m See this question for why this was important.. Upon arrival, however, the lens ...

James

215

asked Jul 9, 2018 at 2:01

3 votes

4 answers

837 views

How is it possible to have shallow depth of field with a small aperture? (The tele-macro paradox.)

Some longer tele lenses have a macro mode that allows for really shallow depth of field that have a lot of background melting when using relatively narrow apertures; like f/4.5-6. I have tried and ...

James

2,724

asked Apr 11, 2013 at 11:02

6 votes

2 answers

1k views

What is the effective aperture of two stacked lenses for macro?

Is there a way to calculate the aperture of two lenses stacked together for macro? In my specific case, I have 90mm f/2.8 and 18mm 1/3.5 lenses.

Paolo

2,781

asked Mar 5, 2012 at 13:46

1 vote

1 answer

2k views

Why does the max aperture change when use Nikon 60mm AF-D Micro on D90 camera?

I have found that my Nikon 60mm Micro AF-D changes aperture from 2.8 to 3.2 when used with a D90. I have tried both A and M mode. Is it by design? Why? I intend to buy Nikon 50mm 1.4 AF-D, but it ...

Joan Pham

13

asked Feb 17, 2012 at 4:09

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