x100s and x100 have same focus speed most of the time

Started Apr 18, 2013 | Discussions thread
OP polarizer Contributing Member • Posts: 869
Re: x100s and x100 have same focus speed most of the time

LaFonte wrote:

This is a totally in line of an urban legend. They don't make different models for different countries  it is the same camera with different stickers. The phase detection is not same as the phase detection in dslr. The purpose of the on chip phase detection is to determine if the lens is currently in back or front focus and then move it accordingly correct way. But the actual focus is not done by this - the differential in phase is too small for correct pinpoint focus, it is just for direction. When it gets the direction right the lens doesn't need to go full cyc down then up it simply goes in right direction, the saving in time could be easily 3x. You want to avoid the case when it starts wrong direction because then it would need to cycle lens twice and it will be slower than without ph. So if it is not 90% sure it doesn't engage at all. It is really a bit flimsy system that only improve chances of faster focus, but it isn't faster focus per se. Still in average it should improve the chances of faster focus from x100, but not like dslr speeds.

that is true

but i am seeing more of the scanning of the whole focus range in most of the cases

 polarizer's gear list:polarizer's gear list
Sony RX10 II Sony RX1R II
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow