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Old Jun 23, 2008, 5:47 AM   #1
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hi

sorry another question....

the letters DO in the canon lens's meanDiffractive Optic as ive checked. But is it really noticable and worth it?

Are there many with DO, and is it a new or old thing?
Is it expensive? :-)

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Old Jun 23, 2008, 9:23 AM   #2
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I've only seen one review of the 70-300 vs the 70-300 DO. The opinion of the reviewer was that the non-DO version was better and cheaper.
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Old Jun 23, 2008, 12:23 PM   #3
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DO is an interesting technology. There are only 2 lenses, the 70-300 and the 400 prime.

It allows them to make the lens lighter and cheaper than an equivalent L lens, but is still typically more expensive than a consumer-grade lens.

The DO is quite a hard lens to get used to, once you know what you are doing it can rival the non-DO, and the build quality is better with better IS and zero CA, but the non-DO is much less effort in post production to get sharp images.

If you are looking at the 70-300 IS DO v 70-300 IS (non-DO) I would recommend the non-DO. When I bought my 70-300 DO Canon only made the (horrible) 75-300. Now though they have the excellent 70-300 IS at half the price.


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Old Jun 23, 2008, 3:31 PM   #4
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ok forget the DO, its too expensive really anyway. the 70-300 IS very tempting as i like the long zoom option.
All i have to compare it against really is my pany fz30 at 12x (420mm). I assume i should get some better looking pictures with the canon 450d and a 70-300 IS lens? much better (quality clarity) do you think or just a little better?

It would be good to see some comparisons from a super zoom and a entry dSLR ie low light full zoom etc, because many people come from a super zoom and im sure dont really know the difference it will make.
Many sites compare cameras that are very similar, be nice to see direct picture comparisons between camera that are totally different. Like a compact on 10x, with a super zoom on 10x, with a entry dSLR on say 300mm

As i cant find any such comparisons. i will do it with the FZ30 and the canon 450d
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