m********l
发帖数: 6748 | 1 值得一看，他自己是用D800E和E-M1的，各种对比也很实在。 如果要对比A7R的AF的话
，和E-M1比较，那么按1-10 scale来说：
对焦速度：Oly 10， A7R 6
对焦精度：Oly 9， A7R 6
追焦： Oly 7， A7R 5
acquisition time: Oly 10, A7R 7
blog.mingthein.com/2014/01/08/sony-a7r-review/
其他的summary：
Vs Nikon D800E: Here, it all boils down to the system of lenses and flashes:
if you need any special purpose gear at all, or longer lenses, then the
balance tips heavily in favor of the D800E. I think the shooting envelope is
a bit wider, too – given the much better shutter mechanism. Of course, if
you’re travelling on a strict weight budget, then I’d go with an A7R, 55mm
and Ricoh GR.
Vs Leica M 240: From what I understand from people who do use the A7R and M
glass, not all lenses are great; you need to try individual ones to see what
plays nice and what doesn’t. And be prepared to do software correction on
all images. However: if you have trouble focusing your rangefinder, use the
EVF more, or are adapting lenses to your M 240 anyway, it may well make more
sense to go with the Sony option to gain some resolution – if the lenses
you want to use agree with the sensor.
Vs Olympus E-M1: Same size, same weight, very different image quality. Quite
a big difference in price, though; less so to the regular A7. The E-M1 has
three aces: firstly, its stabilizer is so good that you claw back most, if
not all, of the high ISO advantage of the A7 and A7R for handheld shooting
in low light. It also means that you don’t have stability issues – my ‘
technical’ hit rate with the E-M1 is close to 100% because of this. You can
shoot at pretty much any shutter speed with impunity. Ace number two is
weather sealing: I’m sure you’ve all seen [what I did to the E-M1 in the
shower]. The final, largest ace is the lens system: not only is the M4/3
lens system arguably the most mature mirrorless system with the greatest
diversity of options – the lenses were all designed specifically for
digital from the ground up. Even the kit lenses are pretty good, and the
excellent glass – like the [60/2.8 and 75/1.8] is really special by any
standards. This one is a tough choice, to be honest. I think it’s like
doing a present value calculation and trying to figure out a discount rate:
do you want images now, or later, and how’s your nerve (or how shaky are
your hands)?
Vs Sigma DP Merrills: Now, this is an interesting question: from previous
tests, we’ve determined that the D800’s sensor and a good lens will match
or slightly outresolve the DPMs. However, there are only three focal lengths
– 28, 45 and 75mm. The A7R’s native primes split the difference with 35
and 55mm. High ISO is unquestionably better with the A7R, you get a
viewfinder and much better ergonomics, and on top of that, there’s more
depth of field control, but if you need to stop down – the Sigmas handle
small apertures better with later onset of diffraction. Both have poor
battery life. An individual choice, I think.
Vs Sony A7: Perhaps the A7R’s biggest competition is going to be its
sibling. I haven’t said much about the A7, because I think the two cameras
are aimed at very different markets. The A7 has a much more forgiving sensor
and shutter mechanism; it will tolerate lower quality lenses, adaptors etc
and not show as much compromise at the pixel level due to its lower
resolution. It will focus faster due to PDAF. The files will be easier to
handle, etc. I suppose the answer boils down to your end intentions for the
files: are you chasing ultimate image quality for very large prints or not?
If the answer is no, then the A7 will probably be a better choice; you’ll
save money for glass, and won’t feel frustrated if your files aren’t
perfect. On the other hand, if you do print…you probably wouldn’t even be
asking. | s*****n
发帖数: 10890 | | m********l
发帖数: 6748 | 3
我就说你不用入胶卷，多拍dp即可。
【在 s*****n 的大作中提到】
: dp 威武~
| s*****n
发帖数: 10890 | 4 还是不一样滴。。。。不过我确实觉得dp是最接近胶片感觉的。以后不玩胶片了，我就
收个全套。
【在 m********l 的大作中提到】
:
: 我就说你不用入胶卷，多拍dp即可。
| m********l
发帖数: 6748 | 5 根据ming和其他几个A7R用户的反馈，如果不用三脚架，很难得到sharp的照片，和
D800E一个德行。 如果一定要手持，那么至少要保证快门速度在3倍(1/3xFL)以上。 | g*******s
发帖数: 2963 | 6 把图片像素降低呢？
【在 m********l 的大作中提到】
: 根据ming和其他几个A7R用户的反馈，如果不用三脚架，很难得到sharp的照片，和
: D800E一个德行。 如果一定要手持，那么至少要保证快门速度在3倍(1/3xFL)以上。
| m********l
发帖数: 6748 | 7
有改善，不过是不是值得呢，哪干嘛买这个机器？
【在 g*******s 的大作中提到】
: 把图片像素降低呢？
| g****k
发帖数: 417 | 8 我觉得抖的问题远没有说的那么明显吧，到现在为止我都没有遇到所谓的shutter
vibration什么的，更别说hold不住自己的相机了。我的手还不算是很稳的。
review里面我最有同感的是evf在日光下看起来太暗了，不知道nex6/7有没有这个问题
，总觉得曝光不够，会下意识的加档 | m********l
发帖数: 6748 | 9
快门都在1/200以上基本没有问题
【在 g****k 的大作中提到】
: 我觉得抖的问题远没有说的那么明显吧，到现在为止我都没有遇到所谓的shutter
: vibration什么的，更别说hold不住自己的相机了。我的手还不算是很稳的。
: review里面我最有同感的是evf在日光下看起来太暗了，不知道nex6/7有没有这个问题
: ，总觉得曝光不够，会下意识的加档
| D**1
发帖数: 1106 | 10 No a7r, but d800e shutter is not different from previous nikons I used. I
can do 1/30 s hand held in low light with 35 mm lens with sharp pics
Is .vr is great but not always work , no experience with em1， maybe Olympus
's stabilization is better ?
【在 m********l 的大作中提到】
: 根据ming和其他几个A7R用户的反馈，如果不用三脚架，很难得到sharp的照片，和
: D800E一个德行。 如果一定要手持，那么至少要保证快门速度在3倍(1/3xFL)以上。
| | | m********l
发帖数: 6748 | 11
Olympus
Oly的防抖是天下第一。
【在 D**1 的大作中提到】
: No a7r, but d800e shutter is not different from previous nikons I used. I
: can do 1/30 s hand held in low light with 35 mm lens with sharp pics
: Is .vr is great but not always work , no experience with em1， maybe Olympus
: 's stabilization is better ?
| J********o
发帖数: 17447 | | m********l
发帖数: 6748 | 13
过一阵应该还会有，我就是懒得折腾不然当时就入几个了。
【在 J********o 的大作中提到】
: 求$1500的A7r..
| a*****t
发帖数: 1596 | | J********o
发帖数: 17447 | 15 今天好像又出了一台, 但是还是无法checkout | x****y
发帖数: 1853 | 16 比对焦速度应该跟a7比吧。Ming Thein拍的照片很so so. 更喜欢 Steve Huff.
flashes:
【在 m********l 的大作中提到】
: 值得一看，他自己是用D800E和E-M1的，各种对比也很实在。 如果要对比A7R的AF的话
: ，和E-M1比较，那么按1-10 scale来说：
: 对焦速度：Oly 10， A7R 6
: 对焦精度：Oly 9， A7R 6
: 追焦： Oly 7， A7R 5
: acquisition time: Oly 10, A7R 7
: blog.mingthein.com/2014/01/08/sony-a7r-review/
: 其他的summary：
: Vs Nikon D800E: Here, it all boils down to the system of lenses and flashes:
: if you need any special purpose gear at all, or longer lenses, then the
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