A different way of looking at the focus breathing of the 70-200mm f/2.8 VRII

Started Feb 3, 2013 | Discussions thread
Leonard Shepherd
Veteran MemberPosts: 8,286Gear list
Like?
Re: A different way of looking at the focus breathing of the 70-200mm f/2.8 VRII
In reply to Nikonparrothead, Feb 3, 2013

Nikonparrothead wrote:

It will never be a 1.9 anything -- since its a constant 2.8.

The OP is broadly right

When a lens changes effective focal length in close focus the physical size of the aperture does not change.

The effective close focus aperture changes in the same way as the effective focal length.

In close focus the Mk II is about one stop effective faster than the original version.

Whether the original version was effective f2.8 at minimum focus is another topic

-- hide signature --

Leonard Shepherd
Many problems turn out to be a lack of intimate knowledge of complex modern camera equipment.

 Leonard Shepherd's gear list:Leonard Shepherd's gear list
Nikon D800 Nikon D7100 Nikon AF-S DX Nikkor 18-200mm f/3.5-5.6G IF-ED VR Nikon AF-S DX Nikkor 12-24mm f/4G ED-IF Nikon AF-S Nikkor 16-35mm f/4G ED VR +19 more
Reply   Reply with quote   Complain
Post (hide subjects)Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow