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

Started 2 months ago | Questions thread
QuietOC
QuietOC Veteran Member • Posts: 5,321
Re: Sony 200-600: What is the minimal extension tube to prevent focal breathing?
3

The 200-600 doesn't breathe. Tony misuses that term. Adding tubes will reduce the angle of view which is breathing.

If you want to maintain focal length the focus on the lens has to be kept set at infinity. Minimum extension would vary for whatever closer focus distance you wanted. Zero extension is required for infinity focus.

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