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Wow, that's awesome! How did you manage to score the flight?
Regarding the AF problems - perhaps the camera was being tricked by the glass canopy? i.e. it could be trying to focus on the glass while you're trying to focus on the landscape behind it?
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USM being affected by the engine/prop whine/vibration.? Just a suggestion.
Lumix LX5.
Canon 350 D.+ 18-55 Kit lens + Tamron 70-300 macro. + Canon 50mm f1.8 + Manfrotto tripod, in bag.
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Good also be that the heat fronm the engines confused th auto focus...
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The engines don't have that much heat. I can't see any blur from them at all.
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Olympus's lenses use conventional motors, not USM ones. (some Sigma USM lenses are available for 4/3, though.) I have to admit that I'm completely at a loss as to why the camera would behave differently. My SWAG answer would be that it's trying to do its thing, but failing - missed focus points, locking on the wrong thing, lack of contrast... Olympus isn't known for fast focusing, but it's usually dead on. But, none of these things are problems that would be unique to the aircraft environment. So I'm wondering (still SWAG) if maybe the piston engines are creating some sort of electromagnetic interference?
matthewpiers.com • @matthewpiers | robertsonphoto.blogspot.com | @thewsreviews • thewsreviews.com
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Just a thought.
1.Piston engines themselves create mechanical vibrations.
2. Noise is sound waves (vibrations) carried in the air.
3. The props create vibrations.
4.The wings and rudder surfaces create vibration. (makes you wonder how they fly?)
Vibration affects focussing.
Maybe a combination at a certain pitch or speed affecting the lens's ability to focus correctly.
It is still only a suggestion. I am no Einstein, although e=mc squared.
Lumix LX5.
Canon 350 D.+ 18-55 Kit lens + Tamron 70-300 macro. + Canon 50mm f1.8 + Manfrotto tripod, in bag.
(This post was last modified: Aug 18, 2006, 03:21 by
canonkid.)