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Do you have trouble with focus on red subjects?

Started Jun 24, 2008 | Discussions thread
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Blake Cook
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Do you have trouble with focus on red subjects?
Jun 24, 2008

I have recently tried in vain to get acceptable focus on red flowers. For some reason they are rarely even close to correctly focussed. If I focus on the green leaves next to the blossom the greenery is perfectly focussed. Red objects like cars don't seem to be a problem.

The only way I can get around it is to bracket focus manually.

Is this a common problem.
Blake in Vancouver
Panasonic FZ18x, Canon S70, Canon XTi, 70-200 f/4 IS, 17-55 f/2.8 IS, Tokina 11-
16, Canon 2x TC

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