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Photography Q&A
When to use a teleconverter?
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<blockquote data-quote="pforsell" data-source="post: 615539" data-attributes="member: 7240"><p>In real life I don't use stacked teleconverters, except when in a desperately focal length limited situation. This setup still autofocuses but the focus is not fast enough to track movement (680mm f/6.7). With my other two tele lenses this setup does not AF (300/2.8 & 400/2.8).</p><p></p><p>I think the main observation is that Nikon has managed to push the III-gen teleconverters (14TC & 20TC) that extra mile. The hit on image quality is very low, if the taking lens has enough resolution. Especially the TC-20E III seems to deliver 2 times the resolution of the main lens, not 2 times minus 30% "blur factor" like the older TC-20E <strong>II</strong> did, which made its use always dubious.</p></blockquote><p></p>
[QUOTE="pforsell, post: 615539, member: 7240"] In real life I don't use stacked teleconverters, except when in a desperately focal length limited situation. This setup still autofocuses but the focus is not fast enough to track movement (680mm f/6.7). With my other two tele lenses this setup does not AF (300/2.8 & 400/2.8). I think the main observation is that Nikon has managed to push the III-gen teleconverters (14TC & 20TC) that extra mile. The hit on image quality is very low, if the taking lens has enough resolution. Especially the TC-20E III seems to deliver 2 times the resolution of the main lens, not 2 times minus 30% "blur factor" like the older TC-20E [B]II[/B] did, which made its use always dubious. [/QUOTE]
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Photography Q&A
When to use a teleconverter?
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