QUOTE(wkchu @ Sep 12 2012, 03:48 PM)
Can anyone give an opinion on comparisions between LX7 and Sony NEX 5/7 with kit lenses?
I believe the Sony kit lense only have aperture of f3.5.
So under low light conditions or night street scenes which ones would be better?
When using base ISO (80 for LX7 and 100 for NEX 5N) the picture of NEX 5N will always be cleaner. However ISO 80 of LX7 looks very good already and can sustain some post processing too.
At high ISO, they perform the same thanks to LX7 large aperture of 1.4.
I estimate Dxomark ISO score of LX7 to be 180+.
NEX 5N is already rated as 1,079.
NEX has close to 2 2/3 stops advantage in ISO performance.
However, if you are just using kit lens on NEX, at the wide end, LX7 will have 2 2/3 stops advantage (f1.4 vs f3.5) so it offset the NEX ISO advantage by exactly the same amount.
At tele end, LX7 is f2.3 and Nex kit at f5.6, that's also 2 2/3 stops difference, so it again offset the NEX ISO advantage.
So they are the same when come to low light shooting.
However, depth of field is different. You will still get 1 stop more bokeh from NEX in full frame equivalent. What I mean is the bokeh you get is the same as shooting with a full frame camera at f5.25-8.4 (NEX) and f7.14-11.73 (LX7). Since we barely shoot more than f8 with full frame, both setup are not really good at getting bokeh, unless you invest in a f1.8 primes for your NEX camera.
That's why I have sold my Nex 5N to fund this LX7. I can no longer swap lens but I get a smaller camera in return that can do almost the same as the kit lens. I also get more buttons and dials to play with which I really miss with the Nex 5N (However, the new NEX 6 announced today has more buttons and an EVF! But it will cost RM3k+).
LX7 is RM1,500. NEX 5N with kit is around RM2,200. NEX camera has very good grip although the camera is very small. But the lens is just too big for my taste. LX7 is power zoom white NEX is mechanical zoom. Some people don't like the zoom speed of the LX7. I can shoot with primes when I use my SLR so certainly turning the lever to zoom is certainly faster than changing lens.
I understand both cameras quite well, feel free to ask anything you want.
p/s when it come to mirrorless with changeable lenses, I have decided to go for micro four thirds because of the lens choice and for some reason, I just love Panasonic cameras although they don't sell well (have tried Olympus, Sony and Fuji... sold them all).
Added on September 12, 2012, 4:26 pmIf you calculate the same way, you will be surprise that LX7 will be better in low light comparing to other "kits" such as 600D/60D/7D with kit lens and also GX1/GF1/PEN with kit lens. Of course, those camera can come back to kill LX7 by using primes. Size, weight and compactness is the biggest trade-off here.
This post has been edited by samsungfreak: Sep 12 2012, 04:26 PM