by ʇolɐǝz ǝɥʇ qoq

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I am thinking of getting Nikon AF Micro Nikkor 60mm f/2.8D. I'm not a stamp collector so what I am looking for is characteristics of 100mm macro lens for Full Frame camera.

Should I get 100mm macro for that even if I own Nikon D90 which is DX format camera? Or Should I get 60mm macro which would be the closest to 100mm after the crop factor considered?

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Which characteristics are you after? DOF, Bokeh, or Framing? – jrista Apr 13 '11 at 3:47
The crop factor on the D90 is roughly 1.5, so your 60mm f/2.8 will have the field of view and depth of field of a 90mm f/4.2. – Evan Krall Apr 13 '11 at 3:50
@Evan Krall: at macro range, doesn't the DOF-equivalence math break down? – mattdm Apr 13 '11 at 8:15
@jrista I would like to get all: DOF, Bokeh and Framing. But most importantly I am after framing. – studiomohawk Apr 13 '11 at 9:09
You can not get all my friend. If you could, everyone would buy D90 instead of buying D700 :) – fahad.hasan Apr 13 '11 at 12:04
up vote 2 down vote accepted

When I started doing macro work (back in the film days) I started with a 90mm Tamron (good lens BTW). What I found was that the working distance was too short. I could not get close enough to bugs and the field of view often included too much background. As soon as I could afford it I bought a Nikon 200mm f4 Micro lens. The field of view is great for framing and the working distance is long enough that I don't scare away bugs every time.

In your case a 60mm may have the field of view of a 90mm on a film camera but the working distance for minimum focus does not change so your working distance will be even worse than what I experienced. I do not think you will be happy.

I recommend that you consider a longer lens like the Nikon 200 or the Sigma 180 (I have experience with the Nikon but not the Sigma so I have nothing to say about how well the Sigma performs). You will get an working distance that will be as good as you can get and even narrower background framing than what I get on my D700. A lens like that can be a bit pricey, so, alternatively look at a Tamron 90mm or a Nikon 105mm instead. My experience with the Tamron is with the older MF version but what I have heard is the newer ones are even better.


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