Sony 200-600: What is the minimal extension tube to prevent focal breathing?

Started 3 months ago | Questions thread
moficera Contributing Member • Posts: 673
Re: Sony 200-600: What is the minimal extension tube to prevent focal breathing?
3

SimpleUser wrote:

Sony 200-600: What is the minimal extension tube to prevent focal breathing?

Presented in one of Tony Northrup's clips was "focal" breathing of the 200-600, where instead of getting the 600mm for instance, when closing the distance to the subject, it might revert to ~ 324mm, because the focal mechanism needs the space to make the focus (or so I understood from the explanation).

OMG I just watched the part of the video and this is why you should not watch these videos. They seem to have no idea what they talk about. They prove nothing. Sure with extension tubes you get more magnification, but zooming out with extension tubes until the framing matches the frame with no extension tubes shows the focal length at close focus? Who said the extension tubes Tony used are needed to get true 600 mm at MFD. This is total FUD. Don't listen to them.

 moficera's gear list:moficera's gear list
Sony a7 III Sigma 35mm F1.4 DG HSM Art Sony FE 100-400mm F4.5-5.6 Venus Laowa 100mm F2.8 Macro Sony FE 200-600 F5.6-6.3 +13 more
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow