Here are some facts you should know about PDAF in 3rd Gen NEX.

Started Oct 20, 2012 | Discussions thread
privater
Regular MemberPosts: 157Gear list
Like?
Re: Here are some facts you should know about PDAF in 3rd Gen NEX.
In reply to Enthused, Oct 20, 2012

Enthused wrote:

privater wrote:

5. PDAF can only be activated when aperturen is no greater than f/6.3 (e.g: f/7-f13 works, f/1.8-f5.6 won't work)

Thank you for quoting all this.

Point 5  seems ambiguous to me.  The actual text says PDAF is unavailable when aperture value is greater than F6.3. You interpret that as when the aperture size is greater than F6.3 which may be correct. They said 'value' which could indicate F7-F13 etc (i.e. smaller aperture).

Doesn't the camera focus with the blades set at maximum aperture size ?  To maximize the light available for focussing?  And then stop down the blades to the appropriate aperture when the shot is actually taken?  If so, why would selected aperture have any impact?  I would think that the maximum design aperture (ie max size opening at a given focal length) would have a bearing on PDAF, but not the selected aperture. What am I missing?

Yes, that's the part puzzle me at first, I'll record a comparison video for this later.

The actual result tells me I should interpret this in my initial post.

 privater's gear list:privater's gear list
Sony RX1 Sony RX100 Fujifilm X100S Sony Alpha NEX-7 Sony SLT-A77 +16 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