How is the OMD so fast

Started Jan 7, 2013 | Discussions thread
s_grins
Veteran MemberPosts: 8,129Gear list
Like?
Re: How is the OMD so fast
In reply to rrr_hhh, Jan 7, 2013

rrr_hhh wrote:

In the case of the 20mm Panasonic, the lens elements seem to be activated by a spring, as is shown here . But not all have that type of design. In fact, that 20mm is an older design. How the lens is pushed forward and backward that fast in mft lenses isn't entirely clear to me. For sure the focusing lens elements have to be moved, but how ? They could even use magnets in newer lens designs ? and adjusts the movements electronically ?

rrr_hhh

I think that 1.7/20 lens is driven by screw motor (it sounds like s crew motor when active).  IMO the spring you relate to, is a common place in situations when screw/nut couple needs precise movement. This spring eliminates flex between two.

-- hide signature --

Looking for equilibrium...

 s_grins's gear list:s_grins's gear list
Panasonic Lumix DMC-GH2 Panasonic Lumix G Vario 14-45mm F3.5-5.6 ASPH OIS Panasonic Lumix G 20mm F1.7 ASPH Panasonic Lumix G Vario 45-200mm F4-5.6 OIS Sigma 30mm F2.8 EX DN +2 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