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05-06-2008, 08:29 PM   #1
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Looking for opiniong on a Sigma 28-105

Hi folks,

I'm looking for a lens in the wide/normal zoom range. Any opinions on a Sigma 28-105mm f/2.8-4 ASPHERICAL IF lens? I know it's discontinued, but there are a couple of stores that still have it for under $200.

Alternatives are appreciated!

05-06-2008, 09:12 PM   #2
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Why buy a Sigma?

Why not get a Pentax 28-105mm? This one is about the same price, small, light and, best of all, it's very sharp.

27997 Pentax SMCP-FA 28-105mm f/3.2-4.5 AL Standard Auto Focus Zoom Lens with Hood
05-07-2008, 12:01 AM   #3
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I had one of these lenses. Not a bad lens all up. Nice colours, great IQ, very good build quality. Just too big and bulky for a walkabout lens imho.
05-07-2008, 06:13 PM   #4
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QuoteOriginally posted by fernley Quote
Why not get a Pentax 28-105mm? This one is about the same price, small, light and, best of all, it's very sharp.

27997 Pentax SMCP-FA 28-105mm f/3.2-4.5 AL Standard Auto Focus Zoom Lens with Hood
I'm not looking for a small or light lens - I want as bright a lens as I can get in a wide-normal zoom range to take people shots in less than perfect lighting (think bars, parties, benefits and fundraisers).


heropsycho - this is definitely not a lightweight - at 14oz it's quite beastly, but nothing better to put on people's face

05-07-2008, 07:11 PM   #5
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I have Pentax SMC 28-105 f/3.2-4.5, it is not as fast as your Sigma 28-105, but I find it quite handy if you use the lens for walk around purpose as it is small and lightweight. I have tried a Sigma 28-105 f/4.0-5.6, while I like the focal range, I much prefer the Pentax for color and sharpness. Also, I handle three different Sigm lenses and AF speed tend to be slower than Pentax.

Not a good portrait, but sample shot without flash


1/15 sec, f/4.5, 85mm, iso 400, -1 Ev, hand-held with K100D


Pentax SMC FA 28-105 f/3.2-4.5 Test Shots - Hin's Tech Corner


Since you are looking for portrait, I would recommend Tamron 28-75 f/2.8



1/60 sec, f/2.8, 63mm, iso 400, 0 Ev, Hand-held in K100D


Tamron 28-75 f/2.8 Di Macro Test Shots - Hin's Tech Corner

The lens is a very good zoom and pretty sharp wide open and I use it mostly for portrait purpose, it is heavy like your Sigma 28-105 but it is constant f/2.8 throughout, a bit pricier than your Sigma but worth considering. If you also consider prime around $200, I would recommend Pentax FA 50 f/1.4 which works really well for indoor at f/2.0 for me.

Last edited by hinman; 05-07-2008 at 08:56 PM.
05-07-2008, 08:38 PM   #6
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Few more portrait samples from Tamron 28-75 f/2.8

Some portraits taken in a nightclub type of restaurant. The inside is quite dark and I resorted to first use of my AF540 on most shots taken in the party


No flash, wide open in f/2.8, iso 400, 50mm, hand-held, no flash
a bit soft, my mistakes mostly


with flash


Tamron 28-75 f/2.8 Di Macro Test Shots - Hin's Tech Corner

05-07-2008, 08:44 PM   #7
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here's a review of the 24-135, i would assume it would be similar
FM Reviews - 24-135mm f/2.8-4.5 Aspherical IF
05-07-2008, 11:56 PM   #8
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I had the Sigma 28-105 2.8-4. Didn't really rate it that much. It was a little to soft for me. sold it on fleabay for more than what I paid and bought an FA50. I guess I was lucky. anyways there are other better lenses in that range.

05-08-2008, 06:45 PM   #9
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Thanks everyone for your input and pictures!

QuoteOriginally posted by switch79 Quote
I had the Sigma 28-105 2.8-4. Didn't really rate it that much. It was a little to soft for me. sold it on fleabay for more than what I paid and bought an FA50. I guess I was lucky. anyways there are other better lenses in that range.
Any suggestions on better lenses in this range?
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