12-30-2011, 09:59 PM
[quote name='you2' timestamp='[url="tel:1325007307"]1325007307[/url]' post='14147']
Yes; the auto focus system on the 5n (and probably 7) require quite a bit of light and generally is quite slow (not nearly as good as the ep-3). However, the beauty of these cameras is that they make it easier to manual focus (though the average consumer might not buy that as a viable alternative0.
--
Here is a quote from dpreview of the 7 (someone else dug it out but i think it explains the the issue):
--
"One weak point of the NEX-7's AF system is when used indoors under artificial lighting, which tends to present a tricky combination of low light and relatively low contrast. At this point focus speed drops right down, and the camera has a tendency to fall back on its 'large green rectangle' mode - in essence analyzing almost all of the frame to acquire focus. The problem here, aside from speed, is accuracy - the camera has a tendency to focus on the background, so you may well need several attempts to get correct focus. In our assessment the NEX-7 is being outperformed by current Micro four Thirds cameras in this respect, even when using a fast lens like the Carl Zeiss 24mm F1.8 - however it's probably still a bit better than the Fujifilm X100."
[/quote]
I can confirm the behavior ... very odd.
Yes; the auto focus system on the 5n (and probably 7) require quite a bit of light and generally is quite slow (not nearly as good as the ep-3). However, the beauty of these cameras is that they make it easier to manual focus (though the average consumer might not buy that as a viable alternative0.
--
Here is a quote from dpreview of the 7 (someone else dug it out but i think it explains the the issue):
--
"One weak point of the NEX-7's AF system is when used indoors under artificial lighting, which tends to present a tricky combination of low light and relatively low contrast. At this point focus speed drops right down, and the camera has a tendency to fall back on its 'large green rectangle' mode - in essence analyzing almost all of the frame to acquire focus. The problem here, aside from speed, is accuracy - the camera has a tendency to focus on the background, so you may well need several attempts to get correct focus. In our assessment the NEX-7 is being outperformed by current Micro four Thirds cameras in this respect, even when using a fast lens like the Carl Zeiss 24mm F1.8 - however it's probably still a bit better than the Fujifilm X100."
[/quote]
I can confirm the behavior ... very odd.