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Forums > Back > two EOS tests coming next week ...
Brightcolours
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#29
02-07-2012, 02:33 PM
[quote name='you2' timestamp='1328621182' post='15629']

I'm a bit surprise that the 24f2.8 has IS and the 24-70 does not; i'm also a bit surprise the 24f2.8 was redesigned before other lenses given its relatively good performance. I've not check the schematics but is it a totally new design ?

[/quote]

Looks like it, yes. Went from a 10 elements 10 groups to an 11 elements 9 groups design (new | old):

[Image: lens-construction.png][Image: lens-construction.png]



The new 28 and 24mm versions have design similarities.

And this explains why the old 28mm was so cheap compared to the 24mm. 28mm new | old:

[Image: lens-construction.png][Image: lens-construction.png]
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Messages In This Thread
two EOS tests coming next week ... - by Klaus - 01-25-2012, 05:58 PM
two EOS tests coming next week ... - by popo - 01-25-2012, 06:46 PM
two EOS tests coming next week ... - by Rainer - 01-25-2012, 10:36 PM
two EOS tests coming next week ... - by joachim - 01-26-2012, 06:27 AM
two EOS tests coming next week ... - by Rover - 01-30-2012, 01:42 PM
two EOS tests coming next week ... - by Klaus - 01-30-2012, 03:24 PM
two EOS tests coming next week ... - by Rover - 01-30-2012, 06:34 PM
two EOS tests coming next week ... - by decltype - 02-02-2012, 08:26 AM
two EOS tests coming next week ... - by Rover - 02-02-2012, 09:34 AM
two EOS tests coming next week ... - by Guest - 02-02-2012, 04:16 PM
two EOS tests coming next week ... - by Rover - 02-03-2012, 07:52 AM
two EOS tests coming next week ... - by decltype - 02-03-2012, 09:42 AM
two EOS tests coming next week ... - by Rover - 02-03-2012, 09:56 AM
two EOS tests coming next week ... - by Guest - 02-03-2012, 12:59 PM
two EOS tests coming next week ... - by mst - 02-03-2012, 02:14 PM
two EOS tests coming next week ... - by mst - 02-03-2012, 02:18 PM
two EOS tests coming next week ... - by decltype - 02-04-2012, 06:22 PM
two EOS tests coming next week ... - by ragsnoldiron - 02-04-2012, 11:04 PM
two EOS tests coming next week ... - by Rover - 02-06-2012, 07:37 AM
two EOS tests coming next week ... - by popo - 02-06-2012, 01:50 PM
two EOS tests coming next week ... - by Rover - 02-07-2012, 08:37 AM
two EOS tests coming next week ... - by Guest - 02-07-2012, 08:54 AM
two EOS tests coming next week ... - by mst - 02-07-2012, 09:57 AM
two EOS tests coming next week ... - by mst - 02-07-2012, 12:58 PM
two EOS tests coming next week ... - by Guest - 02-07-2012, 01:26 PM
two EOS tests coming next week ... - by Guest - 02-07-2012, 01:37 PM
two EOS tests coming next week ... - by Brightcolours - 02-07-2012, 02:33 PM
two EOS tests coming next week ... - by Guest - 02-07-2012, 03:14 PM
two EOS tests coming next week ... - by wim - 02-07-2012, 04:25 PM
two EOS tests coming next week ... - by frank - 02-08-2012, 05:38 AM
two EOS tests coming next week ... - by frank - 02-08-2012, 09:50 AM
two EOS tests coming next week ... - by Rover - 02-09-2012, 08:42 AM
two EOS tests coming next week ... - by mst - 02-09-2012, 11:21 AM
two EOS tests coming next week ... - by wim - 02-09-2012, 11:52 AM
two EOS tests coming next week ... - by Rover - 02-11-2012, 08:40 AM
two EOS tests coming next week ... - by Guest - 02-14-2012, 07:32 PM
two EOS tests coming next week ... - by Rover - 02-20-2012, 10:23 AM
two EOS tests coming next week ... - by popo - 02-20-2012, 12:28 PM
two EOS tests coming next week ... - by wim - 02-21-2012, 01:31 AM

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