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Old June 27th, 2005, 12:07 AM
rick barclay rick barclay is offline
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I was fooling around in my backyard Sunday afternoon with my 100-400mm and a 2x tc. I recently installed a firmware upgrade for my Mark II that has noticibly improved my camera's output quality, and I wanted to see if it would carry over to this extender, which many photographers shun because of its generally soft results. I took about 30 pics and I think maybe two are keepers. This is one I like.

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Old June 27th, 2005, 07:41 AM
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Did you use a tripod or handheld?
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Old June 27th, 2005, 01:24 PM
rick barclay rick barclay is offline
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Tripod. It's probably a waste of time trying to shoot clear pictures at over 400mm without one. Even when you think you don't shake the camera, you do.
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Old June 27th, 2005, 02:58 PM
TechJD TechJD is offline
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nice shot
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Old June 27th, 2005, 03:28 PM
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ohenry ohenry is offline
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Did you have IS turned on? There is still some considerable shake noticible and I'm curious if you allowed the IS to stabilize prior to snapping the shot, or if mirror slap got it, or if it's just the results of using the 2X with the lens.
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Old June 27th, 2005, 03:57 PM
rick barclay rick barclay is offline
Cap'n Flash
IS was on, ohenry. I really didn't think to turn it off
even with the tripod. I was mainly focused on checking to see if there was any impovement in picture quality with the firmware update. I'll have to remind myself to turn the IS off when using the tripod next time and see how that looks.

I suppose the mirror caused some shake. One of these cloudy days I'll lock it up and see if I can detect any difference. For now, though, guess I'll have to be satisfied with whatever I can get.
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Old June 27th, 2005, 04:26 PM
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You don't have to turn off IS, but you need to hold the shutter release down for a second or two to allow the IS to recognize it's on a tripod and settle down.

Re: mirror shake, that would depend on the shutter speed. Most cams are most susceptible around 1/8 of a second or so. It's worth doing lock up for still life shots and slow shutter speeds, but with birds you'd might miss the shot.

Be worth your time to do some tests just to satisfy your own curiosities to see what works best. I know the 2X doesn't work all that great with zooms but they work great when you need that extra distance. I did some 2X shots with my 400mm telephoto and got fair results...but hey...it was 800mm zoom on a 1.6 crop factor camera
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Old June 27th, 2005, 06:59 PM
rick barclay rick barclay is offline
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Thanks for the IS tip, ohenry. I'll definitely try to
remember that.

I recall reading that mirror lock-up is useful only under certain conditions.

I really have a fetish when it comes to distance, which is why it p's me off so much that the 2x tc is
near useless where clarity is concerned. I probably'd be better off using a Canon prime lens than that 100-400mm with the 2x. 400mm prime is about the same price, but no IS . The 500mm
prime comes with IS and only $5,100 or so. And
impulsive is my middle name. Heh.
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