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PostPosted: Fri Jul 31, 2009 5:15 pm 
I'm planning on getting this lens, possibly in September. Thanks for the review.


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 Post subject:
PostPosted: Fri Jul 31, 2009 5:44 pm 
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You're very welcome Phil :)

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PostPosted: Sat Aug 01, 2009 11:23 am 
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Update: Here's the lens blooming "issue" in practice:

Image
http://citruspers.deviantart.com/art/Glass-131629431

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PostPosted: Sat Aug 01, 2009 11:32 am 
Is that it? From reading peoples comments all over the forums, I'd expected it to be something more ... spectacular. It's not something you really notice unless you go looking for it.


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PostPosted: Sat Aug 01, 2009 11:43 am 
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I don't see any lens problem with the last "blooming" shot. Only perhaps the text is overexposed. The sample at the link earlier in the thread was much more visible.

As a general question, how do you find the practical wide open performance on the long end?

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 Post subject:
PostPosted: Sat Aug 01, 2009 1:50 pm 
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It's practical wide open performance is fine, seriously.
Images are saved at 60% jpeg quality.

Images are at high shutter speeds, lens set to continuous autofocus so slight focus errors are possible.
100% @ 70 mm
Image

100% @ 200 mm
Image

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 Post subject:
PostPosted: Sat Aug 01, 2009 4:34 pm 
Those crops are fine. I just realise I was paid yesterday :D.


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 Post subject:
PostPosted: Sat Aug 01, 2009 4:54 pm 
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Nice one! ;)

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 Post subject:
PostPosted: Mon Aug 03, 2009 10:18 am 
very nice review :D
i'm thinking about it hehheeh :D


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 Post subject:
PostPosted: Thu Aug 13, 2009 1:41 am 
logic_nguyen wrote:
very nice review :D
i'm thinking about it hehheeh :D

same...its very tempting!


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 Post subject:
PostPosted: Thu Aug 13, 2009 6:20 pm 
Mine has just arrived. My initial impressions are that it's focusing is really fast and silent. Going from minimum focus (~1m) to infinity takes about 0.5 seconds, which is rather impressive.

One thing that I've noticed is that it is a little soft wide open because it's front focusing. At 70mm, applying an AF adjustment of +18 more or less fixes the issue and you'll consistently get AF that's spot on. At 200mm, even if you apply an AF adjustment of +20 you are very slightly front focused. This front focusing is noticeable when shooting news paper on a wall but doesn't appear obvious in real life photos. Still, if you stop down to f5.6 you get really sharp photos across the entire zoom range.


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 Post subject:
PostPosted: Thu Aug 13, 2009 6:37 pm 
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It's too bad my D90 doesn't support that focus adjustment :(
But hey, as you said, you won't notice it unless you're doing macro/close-ups :)

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 Post subject:
PostPosted: Thu Aug 13, 2009 6:40 pm 
pgtips wrote:
Mine has just arrived. My initial impressions are that it's focusing is really fast and silent. Going from minimum focus (~1m) to infinity takes about 0.5 seconds, which is rather impressive.

One thing that I've noticed is that it is a little soft wide open because it's front focusing. At 70mm, applying an AF adjustment of +18 more or less fixes the issue and you'll consistently get AF that's spot on. At 200mm, even if you apply an AF adjustment of +20 you are very slightly front focused. This front focusing is noticeable when shooting news paper on a wall but doesn't appear obvious in real life photos. Still, if you stop down to f5.6 you get really sharp photos across the entire zoom range.


You're 40d dosen't have AF microadjust though! :?


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 Post subject:
PostPosted: Thu Aug 13, 2009 6:54 pm 
No, but my 50D does ;)


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 Post subject:
PostPosted: Thu Aug 13, 2009 7:34 pm 
pgtips wrote:
No, but my 50D does ;)


When did you get that then?


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