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Old Sep 5, 2006, 5:50 AM   #1
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I think this it signifies that the lensisoptimised fordigital but I'm not sure.Basically I want to know what I'm missing out on with anon DG version of a Sigma lens. Does it make much difference?

Thanks, Bob
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Old Sep 5, 2006, 6:54 AM   #2
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Hi Bob

'DG' means it is optimized for digital but also can be used on film. If you want digital only, then you will need to look for 'DC'.

Not too sure about Sigma's version but with Pentax's DFA lenses (ie optimized for digital but usable on film) it has got a special internal coating to stop internal reflectioon caused by sensor (?) or something like that.

Hope that helps,

Kenny

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Old Sep 5, 2006, 8:16 AM   #3
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DG is a coating Sigma puts on there new lenses so they are ready for digital. I had two Sigma 70-200mm f/2.8 lenses, one DG and on non DG and I could not see any difference between the two versions and the DG version is more expensive than the non DG version.

In my opinion there is no practical difference between the two versions.

Tom
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Old Sep 5, 2006, 8:21 AM   #4
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Thanks for the info.

ennacac,did your old 70-200mm f2.8 perform well at F2.8?
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Old Sep 5, 2006, 9:35 AM   #5
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From the Sigma website:


Quote:
DG (DG Lens)
These are large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for Digital SLR Cameras whilst retaining suitability for traditional 35mm SLRs.
Quote:

DC (DC Lens)
These are special lenses designed so that the image circle matches the smaller size of the image sensor of most digital SLR cameras. Their specialized design gives these lenses the ideal properties for digital cameras, the compact and lightweight construction is an added bonus ! including compact and lightweight construction.
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Old Sep 5, 2006, 11:48 AM   #6
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bobinoz wrote:
Quote:
Thanks for the info.

ennacac,did your old 70-200mm f2.8 perform well at F2.8?
They both were OK at 2.8, but not as good as the FA* 80-200 2.8 that I bought as replacements for them. They were very sharp at f/4 on up!

Tom
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