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<blockquote data-quote="Geoffc" data-source="post: 121990" data-attributes="member: 8705">I've just gone to FX and decided that the 70-200 was not quite long enough for some of my requirements, so I decided to get the TC-20e III to double the focal length. I've put some images taken with the 70-200 VRII + TC-20e III @ around 400mm <a href="http://www.flickr.com/photos/teerecks/sets/72157632916146546/" target="_blank">here</a>. I'd be interested to know what people think of these results which I grabbed quickly today. I know what I think, but I would be interested to hear from others who have 400-500mm lenses currently.So far I've concluded that I need to be around 1/1000 sec F8 and VR off for handheld shots with this arrangement on the D800. I'm letting the ISO balance the light and using shutter and aperture in manual mode. Unlike the bare 70-200 at F2.8 which is very sharp wide open, this definitely prefers F8 to wide open at 5.6.It will be interesting to see if my D300s produces good results with the increased DOF on DX. I still think I may have some slight back focusing that cannot be corrected with AF fine tune as I'm already at -20 on the D800. I'll try it some more before I consider going back to Nikon for calibration.</blockquote>

[QUOTE="Geoffc, post: 121990, member: 8705"] I've just gone to FX and decided that the 70-200 was not quite long enough for some of my requirements, so I decided to get the TC-20e III to double the focal length. I've put some images taken with the 70-200 VRII + TC-20e III @ around 400mm [URL="http://www.flickr.com/photos/teerecks/sets/72157632916146546/"]here[/URL]. I'd be interested to know what people think of these results which I grabbed quickly today. I know what I think, but I would be interested to hear from others who have 400-500mm lenses currently. So far I've concluded that I need to be around 1/1000 sec F8 and VR off for handheld shots with this arrangement on the D800. I'm letting the ISO balance the light and using shutter and aperture in manual mode. Unlike the bare 70-200 at F2.8 which is very sharp wide open, this definitely prefers F8 to wide open at 5.6. It will be interesting to see if my D300s produces good results with the increased DOF on DX. I still think I may have some slight back focusing that cannot be corrected with AF fine tune as I'm already at -20 on the D800. I'll try it some more before I consider going back to Nikon for calibration. [/QUOTE]

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