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09-27-2013, 11:47 AM   #1
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Sigma 70 300 APO vs Sigma 70 300 OS

Hello everybody.

I would like to know the difference between those two lenses, as I can't find it anywhere else. The newer OS version is supposed to be better optically and it has stabilizer. Any experiences?

How is the OS version compared to the APO version or even the pentax 55 300? I need to decide soon, as I am buying a lens next week for surfing pictures.

Thanks in advance, it's for my pentax K30

And will I be able to use the mechanical stabilizer in video mode?

09-27-2013, 01:31 PM   #2
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Location: Niedersachsen, Germany
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I have the Sigma 70-300mm DG APO Macro and use it on the Pentax K-30.
I don't know the difference between the APO and OS version.
But I know that I am very satisfied with my APO.
I have a dedicated Macro (Sigma 50mm 2.8 EX DG Macro 1:1), but tested the Macro function (1:2) of the 70-300 APO out of curiosity.
It is quite good, but I am sure that I have received an excellent sample of this lens as it is very sharp even at 300mm!

On a Pentax camera you don't need a stabilized lens (you for sure know that), but I understand your thoughts as some stabilized, later released versions can be "better".

But mind that it can also be the other way round - the "Tamron SP 17-50mm f2.8" is an excellent lens (if the copy is decent) and it is presumed to be much sharper than the stabilized version.
09-27-2013, 01:37 PM   #3
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Posts: 93
Original Poster
The stabilizer is actually for the video, on pictures with the in body stabilization should be enough.

But I was wondering about the image quality, I can't see a proper comparison

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