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Old Oct 2, 2008, 7:34 AM   #1
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Hello there,
both lenses come for nearly the same price, the Sigma has "A" setting, the Viv is fully manual. The Viv has a serial number starting with 28, so it's made by Komine, not Kiron.

I haven't heard much about the Sigma macros, the Kiron made Vivitar ones have a high reputation.

I am not really sure which one to choose, I tend towards the Sigma mainly because of the "A" setting and because it's a bit lighter than the Viv. I could go to 100mm using my Viv 2x macro converter.

On the other hand for insects 90mm or 180mm(with converter) would come in handy.

Please post your experiences and opinions, thanks in advance.
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Old Oct 2, 2008, 8:44 AM   #2
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I love my Vivitar 105mm but it has the A setting. Quality is high with it. The 40mm extra reach would work for me.

Dawg
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Old Oct 2, 2008, 10:16 AM   #3
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as do i. my 105 is a komine also.. and i like the extra reach also. not that it matters cause 1:1 is 1:1
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Old Oct 2, 2008, 9:05 PM   #4
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Sometimes means the difference between a sting and not a sting. LOL :G

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Old Oct 3, 2008, 6:00 AM   #5
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Thanks for the replies so far, will have a closer look at the Viv then.
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Old Oct 3, 2008, 9:20 AM   #6
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thkn777,

the longer focal length will have less effect on the available light too, with the shorter length you can have a marked effect on the light.... Jack

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Old Oct 4, 2008, 2:34 PM   #7
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If insect macro is part of your plans, I would pick the 90mm out of these two choices. However, you might want to wait on a 90-105mm range macro with the A setting. Meter readings can change quite a bit, even with the same subject, as you change focus with a macro lens. Of course, you could always just set a pattern of hitting the green button then the shutter button with every shot. It would just be one more thing to remember in the short time frame you have to get your insect shot.

For flowers and such I don't know that either would be significantly preferable.

Tim
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Old Oct 6, 2008, 2:03 PM   #8
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Update: ok, I pushed my luck and won the bid for the Viv 90mm. Now waiting for delivery.


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Old Oct 6, 2008, 7:41 PM   #9
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Hope you enjoy it!

Dawg
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Old Oct 15, 2008, 2:44 PM   #10
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Update: the lens came today!

First impressions: small when set to infinity, quite long/huge at 1:1 (but I bet you all expected that). I thought it was heavier... don't get me wrong, it's well build, but it feels lighter than it looks to say so.

Smooooth(!) focussing you get with a true macro lens, holy cow! Even at f/2.8 I could fiddle around with the focus ring while my camera kept telling me things were in focus. :?

Now the bad news: I found, that my sensor needs a cleaning, in 1:1 mode I can clearly see some dust :sad:

I'll attach some of the first photos with that lense, they are nothing special at all and no real test, still I wanted to share a bit of my happiness.

#1 - outside, the first flower I saw upon entering the backyard. wrong f-stop, but nice colors
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