看看这位悲惨的，跟Amazon换了三台，都有泥，最后绝望了，准备自己PS处理算了，
"This is my first DSLR and I wanted to love it. I put in a lot of research
and this camera seemed perfect for what I needed.
The first one came with a large spot on the sensor (and some smaller spots).
It was almost 0.3 mm (actual physical dimension -- the number of pixels
affected in the photo was much larger) and it could be seen in the shot even
at F 3.5. I tried the "clean sensor function" I even blocked the mirror up
and attempted to blow the dirt away, it wouldn't budge.
I returned the camera. Amazon was awesome, I had a replacement shipped the
next day, at no extra cost.
Unfortunately, the replacement also has spots (I counted 10+) on the sensor.
These are much smaller, but still clearly visible at F 13 and above. The
optics of different shots clearly indicate that they are on the sensor not
on the lens.
Add to the problem above the fact that at ISO 1600 I see a lot more noise
than what I see in pictures posted on sites like dpreview etc for the same
ISO or above.
Also add very poor auto focus during movies (esp in medium light).
I am not giving up yet, but I am disappointed right now.
[UPDATE, Nov 2012]
Third camera was fine initially, but after 1000 pictures taken, it is now
sprayed all over the top and left of the picture (bottom-right of the sensor
) with spots. (30+ deep black spots at F29, 14+ at F16, 6 still very visible
at F9)
Also, the manual says that the sensor should not be touched with anything
under any circumstances (so cleaning it myself is not exactly an option
either - might void warranty).
The kit lens coming with the camera is ok, but I've seen sharper. It's also
useless for macro photography, but you can't have it all.
On the positive side: picture quality is splendid. Ergonomics, menus,
controls, is phenomenal. Autofocus could be faster. I learned how to help it
during movies in low light, so that the motor noise is kept to a minimum
too. Otherwise the sound quality is also very good.
After using this for a while, I came to the conclusion that the mirror and
viewfinder are a useless nuisance; it only adds to the "interestingness" of
the thing but it increases the points of failure greatly. I think one could
compose the picture just as well using the high quality LCD screen. I got
used to the viewfinder but I'd readily give it up for not having a mirror
mechanism that makes the sensor dirty. Also, even in "Quiet mode" the mirror
-flip noise would wake my newborn.
I'm tired of packing and unpacking cameras, so at this point I'll probably
just keep the thing and post-process where needed and possible.
Amazon gets 10 stars. "
