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Summicron 90mm ASPH APO for Macro Work


techpan

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Interesting shots and I agree about the colour inversion in the BOKEH.

 

The APO 90/2 has a maximum reproduction ratio (or minimum, depending on how you see things) of 1:9 compared to 1:3 of the 90/4 and the macro adapter. Closer work, down to 1:1 is tough without a DSLR. For that, I use a Nikon D2X and either their 60mm or 105mm VR macro, f2.8 both.

 

Even so, shows the 90/2 is a great lens for close up work down to a field size of 220 * 330 mm, call it 9 * 13 inches for our US friends.

 

Did you tripod mount the camera, focussing looks spot on at all apertures. My 90/2 is on its way back from coding, I've been very impressed by it, has a luminosity, a vibrancy which the 90/2.8 lacks.

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Garin, have you used IR/UV filter?

 

I've detected with this lens a better rendition of colors using the IR filter.

 

Francisco.

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Jack, it won't work with the macro adapter reportedly. It's only for use with the 90/4 Macro. The 90 Macro is a superb lens and close focusses to 1:3. And with an M8 would be ~1:2. Short of a Visoflex/bellows it can't be beat! I love my 90/2 but it isn't for really close work. For portraits tho it'll make you cry it's so good.

Steve

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Be interesting to mount that lens in the macro adapter for the 90 macro and see if it worked... I suspect it might.

 

It will not work - the 90/4 has two lens cams, one for normal, one for close focussing which takes the macro adapter into account. Put the 90/2 on the macro adapter and you risk damaging it and the lens.

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The UV/IR filter was on but the lens is not coded. The camera was set to UV/IR and coded. I don't know if the non coded lens disables the UV/IR portion on the camera?

 

Important not to confuse using an IR filter and coding with this lens. With wide-angles, the coding is used to correct image defects induced by the filter. With a 90mm lens, there are "none", so it makes sense to use a filter even if the lens is not coded and in this case, the camera should be set to Lens Recognition Off.

 

The IR filter will filter out the IR induced fug which softens the image and clean up the greens and blacks but will not induce the cyan which using a coded lens and in-camera correction is designed to remove.

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