http://forums.dpreview.com/forums/read.asp?forum=1042&message=40162407
http://forums.dpreview.com/forums/read.asp?forum=1042&message=40166853
Not good.
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 name='Sammy' timestamp='1324998026' post='14144']
[url="http://forums.dpreview.com/forums/read.asp?forum=1042&message=40162407"]http://forums.dprevi...essage=40162407[/url]
[url="http://forums.dpreview.com/forums/read.asp?forum=1042&message=40166853"]http://forums.dprevi...essage=40166853[/url]
Not good.
[/quote]
Hmmh, I had no problems with the old 5.
"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."
This "relatively low contrast" assessment may be slightly optimistic - the guy who described his troubles over at dpreview couldn´t properly focus on a Christmas tree, which is a pretty contrasty motif. Kind of bizarre that a cam, which is a top performer at high ISO settings, fails to focus indoors.
[quote name='you2' timestamp='1325007307' post='14147']
"... however it's probably still a bit better than the Fujifilm X100."
[/quote]
Well, I took a number of christmas pictures with the X100 ... I had
no trouble with the AF at all. From hearsay ... the AF of the X100
seems to have improved with the latest firmware version.
[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.
anyscreenamewilldo
Unregistered
[quote name='you2' timestamp='1325007307' post='14147']
"One weak point of the NEX-7's AF system is when used indoors under artificial lighting focus speed drops right down,....[/quote]
[quote name='Klaus' timestamp='1325282395' post='14200']
I can confirm the behavior ... very odd.
[/quote]
....shouldn't have sold the 7d <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/rolleyes.gif' class='bbc_emoticon' alt='
' />
anyscreenamewilldo
Unregistered
[quote name='Klaus' timestamp='1325442365' post='14216']
You can use the LA-EA2 ...
[/quote]
... yes, and fortunately i've found that the za's seem to be better at looking thru panes of glass than almost anything else ....
<img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/rolleyes.gif' class='bbc_emoticon' alt='
' />