e**n
发帖数: 5876 | 1 ALIASING & MOIRE
(Zeiss 50mm F1.7 @ F2.8, ISO 1600) |
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t***n
发帖数: 667 | 2 转自photorumors
Sony Alpha A99 camera. No details were provided as of when this camera
will
be announced:
Translucent mirror
36.9 Megapixel 3MOS Exmor sensor
(No Bayer filter)
ISO 100-102400 extendable to 204800 and 409600
12 frames per second
No infrared or anti-alias filters
Digital infrared filtering with three modes NO IR,WITH IR,ONLY IR
In camera moire remove
89 cross-type points AF
Metering direct from sensor
60/1-1/24000sec, time, bulb shutter (focal plane)
Flash synchronization up to 1/500... 阅读全帖 |
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n**b
发帖数: 13203 | 3 "I am just looking at a few pics taken with the CZ 24-70 and the new sensor.
So crispy it tears our eyes out plus a bit of moire… now we know why those
expensive lenses are are there With 24 Megapixel the pictures also look
more “wide eyed” and “deeper”." |
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n**b
发帖数: 13203 | 4 “So crispy it tears our eyes out plus a bit of moire”，这听着像大嘴的风格
吧。 |
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k*********g
发帖数: 160 | 5 http://photorumors.com/2011/07/18/some-sony-alpha-a99-rumors/
Translucent mirror
36.9 Megapixel 3MOS Exmor sensor
(No Bayer filter)
ISO 100-102400 extendable to 204800 and 409600
12 frames per second
No infrared or anti-alias filters
Digital infrared filtering with three modes NO IR,WITH IR,ONLY IR
In camera moire remove
89 cross-type points AF
Metering direct from sensor
60/1-1/24000sec, time, bulb shutter (focal plane)
Flash synchronization up to... 阅读全帖 |
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a********6
发帖数: 1077 | 6 T3i摄像像质非常好。解析力/moire/aliasing等方面不如GH2,rolling shutter两者差
不多，但是色彩表现，特别是对人肤色的表现比GH2好很多，GH2室内人造光条件下，
人的皮肤还原严重偏冷色。个人很不舒服。总体而言，像质比普通家用高清摄像机好
很多（铁别是弱光条件下），绝对能够满足你的需要。至于声音，相机本身是不是立
体声并不重要，要想效果理想，外接mic是必须的，关键是后期混成要做好。
另外，GH2拍照片像质和T3i根本没法比。你要兼顾照相的话，就不要考虑GH2了。 |
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R***a
发帖数: 41892 | 7 鸡血！
Responsephoto says the sensors name is X-Trans! R. writes that Fuji took
some ideas from the classica film technology to create the new sensor which
will beat the image quality of all current fulflrame sensors! The photosites
will be of 6 different colors and disposed randomly, therefore moire will
be avoided.
- There is no Anti Aliasing filter on the sensor.
6色色彩滤镜 |
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n**b
发帖数: 13203 | 8 价格有点儿吓人
Pricing : around 1300including the 35mm lens. The other optics being
around 600(“according to their informations”, and “to be confirmed”)
Sensor : APS-C 1.5x, CMOS, Fuji “X-Trans” technology. Photosites pattern
is 6 sides (as opposed to Bayer 4 sides). There is no anti-moiré filter,
which will allow better resolution. [Note that there is no word about an
organic sensor] Lenses are full metal. “Fujinon XF optics are announced as
exceptional”, They are 18 f2.0, 35 f1.4, 60 f2.4 macro (equi... 阅读全帖 |
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b*********n
发帖数: 5846 | 9 后者看官方说法对用光和拍摄距离及对象都得有很好的把握才能减少摩尔纹啊，这个看
着不大适合一般用户。
“This is an ideal tool for photographers who can control light, distance
and their subjects to the degree where they can mitigate the occurrence of
moiré.” |
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f*****n
发帖数: 18176 | 10 The D800E is a specialized product designed with one thing in mind: pure
definition. It's all the features of the D800 plus an optical low pass
filter (OLPF) without anti-aliasing properties to facilitate the sharpest
images possible. It's a great option for RAW shooters who are in a position
to control light, distance and their subject to the degree where they can
mitigate the risk of moiré and any false color. |
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j****n
发帖数: 1346 | 11 From "http://imaging.nikon.com/lineup/dslr/d800/features01.htm#a12"
"The D800E reproduces the texture of the stone pavement and twigs with
higher resolution than the D800. It allows sharper rendering with depth. "
"With the D800E, moiré and false color may be noticeable when there are
repetitive and fine patterns on a subject such as kimono fabric. To avoid
this, it is necessary to take measures, for example, changing the focusing
point or shooting distance." |
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G**Y
发帖数: 33224 | 12 D800E - 'cancellation' of anti-aliasing filter
Nikon uses slightly curious wording about the D800E - that the anti-aliasing
effect of the optical filter stack in front of the sensor is 'cancelled' -
and the diagram below shows what this means (courtesy of Nikon). Anti-
aliasing filters work by using a birefringent material to split light rays
into two based upon the polarization of the light; a first layer splits it
horizontally, the second vertically. The practical result is a slight
blurring o... 阅读全帖 |
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d*****0
发帖数: 68029 | 13 http://philipbloom.net/2012/02/07/d800/
是因为视频更容易产生摩尔纹么？
Oh…one last thing, any video shooters out there AVOID the D800E. It has no
low pass filter which means aliasing and moire hell! It is designed to give
more detail and resolution. We don’t need it! |
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a********6
发帖数: 1077 | 15 如果真是这样的话，我肯定买一。没有低通滤镜的高像素机型很赚眼球，但是对于非专
业studio用途而言，没有什么实用价值。而且，没有低通滤镜，造成的moire问题，使
得video几乎没发用。 |
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e*t
发帖数: 130 | 16 昨天电视剧里一个角色撞了脑震荡，在医院里休养，头上扎着一个渔网般的纱布罩子。
结果 moire 的痕迹一下子就出现了，不光如此，连颜色也从白色变成蓝紫色混混的一
团。我一下子想到要是 D800E 拍出的录像也变成这样子的话，那后期要花多大功夫才
能修改呀？所以我倾向于D800，而且省下来$300可以用来买 external microphone 使
录音质量有实质性的提高。 |
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a********6
发帖数: 1077 | 17 估计可以提供更高的bit率和码率，在resolution，moire，aliasing上比5D2有质
的提高，但是在现有的技术条件下，rolling shutter很难解决，只能在拍摄的时候尽
量避免。估计5DX可以成为诸如时尚类电视广告，short film，甚至低成本电影的首选
器材。
5DX比D800拍照片的时候resolution要低一点，但是对焦性能基本相当，连拍速度
有明显优势，摄像功能优势显著。二者应该是一个档次的产品。针对的潜在用户群有一
定区别。将来谁更占优势，目前很难预测。不过我个人更看好5DX，因为我觉得过高的
像素密度对于镜头要求太高，大多数专业镜头都很难满足要求，而且对于绝大多数人来
说实用价值不大，倒是DSLR的摄像功能越来越重要，可能被很多专业，或者半专业的客
户买来替代昂贵的数码电影摄影机。
现在大胆预测一下，5DX很可能一统未来高端DSLR摄像市场。Canon未来应该会推
出一款可以拍摄4K格式的全幅DSLR，可能会对目前天价的高端高清晰度专业数码电影摄
影机构成巨大冲击。不过，对于普通拍摄电视广告，short film，... 阅读全帖 |
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a********6
发帖数: 1077 | 18 我觉得主要还不是镜头群的问题，关键是5D2大底，浅景深的优势显著。GH2的
resolution，moire，aliasing确实比5D2强，但是数码味太浓，5D2拍地视频比较柔和
，相对接近film的感觉。看见过专业摄像摄影师偏爱5D2的浅景深和相对胶片的感觉的
评论。 |
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t******7
发帖数: 177 | 19 Both the 800 and 800E have optical filters, but only the 800 has low pass
anti aliasing properties. The 800E does away with the low pas, but retains
the I R features. The 800E is meant for photogs wanting ultimate sharpness
at the risk of moire patterns.
http://forums.popphoto.com/showthread.php?626556-D800-vs-D800E |
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b*********n
发帖数: 5846 | 20 "Whilst it is a shame the D800 has a moire issue, it certainly beats the 5D
Mark III and D4 hands down for detail and resolution."
５D３也被连带着干掉了。 |
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t*******f
发帖数: 2634 | 21 While waiting D800, kind of thinking of D800E now.
For self-use, which one to go?
How to handle moiré? Is it easy to control? |
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n**b
发帖数: 13203 | 22 http://www.kenrockwell.com/fuji/x-pro1.htm
The Fuji X-Pro1's image quality and handling are astounding. AF and overall
speed is twice as fast as the X100, and the magic sensor, which plays tricks
to eliminate color moiré problems so it can dispense with the anti-
aliasing filter, are astoundingly sharp —sharper pixel-to-pixel than
anything from a DSLR and about the same —maybe better than the LEICA M9. |
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G**Y
发帖数: 33224 | 23 D800E拍起来风险是不是比较大呀。
一不小心出个moire，恶心半天？
可是要是pixel peeping，D800是不是不过瘾呀? 有机内demoire吗？ |
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P*******L
发帖数: 2637 | 24 http://graphics.stanford.edu/courses/cs178/lectures/sensors-26a
Page 44
x3 的特点如下：
- longer wavelengths penetrate deeper into silicon, so arrange a set of
vertically stacked detectors
- top gets mostly blue, middle gets green, bottom gets red
- no control over spectral responses, so requires processing
- fewer moire artifacts than color filter arrays + demosaicing
- but possibly worse noise performance, especially in blue |
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R***a
发帖数: 41892 | 25 Pentax Ricoh announces Pentax K-5 II DSLR and K-5 IIs with no low-pass
filter
Pentax Ricoh has announced its latest flagship DSLRs - the K-5 II and K-5IIs
. The 's' version, which costs $100 more, comes without an anti-aliasing
filter, to offer higher resolution at the risk of more prominent moir
interference patterns. Both cameras feature 16MP sensors and the weather-
sealed magnesium alloy build of the original K-5. The biggest difference is
the latest, SAFOX X, autofocus sensor. This is desig... 阅读全帖 |
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h******i
发帖数: 1941 | 26 关于无敌兔，最近看到的评测（相对新出的6d，d600，5d3, d800等全副机）是高感差
，对焦差，视频差（压缩输出，4:2:0；moire）。所以秉着相机买新不买旧的原则，建
议上一个新的。另外6d性能不如d600，所以价格应在1500以内，这样5d2就回在1100左
右，现在的价格（1300）应该还有降价的空间。 |
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h******i
发帖数: 1941 | 27 Nikon d800E (如果想录像的话就d800；d800E有很强的moire，对录像不好）再加上一
个1.4光圈的定焦头，焦段看你最习惯哪个了（其实无非也就是35, 50, 85）。现在的
入门单反＋50mm（全副等效焦距75mm）的焦段如果觉得习惯，就上85/1.4G镜头。
拍人像镜头有人喜欢70-200／2.8VR2。这样的话需要一个广角镜头，24，28，35这几个
焦段再选一个也够了。
镜头不要太多，1-2个足已。要不然哪个都用不好。 |
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d****n
发帖数: 12461 | 29 竟然有人说moire纹不是问题的
摩尔纹就是数字噪音，你看到的所谓细节，全都是计算机造成的错觉
这会让你好好的风景片产生讨厌的伪色
让你的人物照片产生瑕疵
有人说这些摩尔纹可以在后期处理里面轻松去掉，但是一样的时间，也可以用在后期锐
化上啊。
而且部件一个不多，凭啥D800e要卖得比D800贵？完全是厂商的噱头而已 |
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k********a
发帖数: 446 | 30 虽说X100s用的是XE-1的芯片，但不知那个小小的23mm/F2给不给力。X100/X100s都是定
焦机，很多时候照片都要裁，所以（实际）分辨率尤其重要。前几天pchome电脑之家的
徐嘉给了些实测 X100s vs. X100的样本， 分辨率上X100s感觉好了不止25%阿。
http://tech.163.com/digi/13/0301/07/8OS6B3AD001624J3_5.html
又顺便查了一下dpreview上常见相机的分辨率，
5D2: 2750 (LPH)
5D3: 2800
D800: 3200
D800E:4000 (but then strong moire)
RX1: 3000
Nex7: 3400
SD1: 3100
OM-D: 2600
X100: 2300
XE1/Xpro1：3000+ ("in terms of resolution the Fujifilm is very close indeed
to the 24MP Sony NEX-7 or the Sigma SD1" -- dpreview) |
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d******a
发帖数: 32122 | 31 NX200 dxomark分数已经和Sony的那块传感器很接近了
NX300据说比NX200强了一大截
NX300 unboxed, impression and comparing with old 20mp sensor camera
2 days ago
2 boxes - 1 for camera and 1 for case bag. thank you Samsung.
comes with Samsung Micro SD adapter card 8 GB. don't know speed but no
matter.
comes with Adobe LightRoom 4.1. support not yet available but soon this
April update from Adobe as promised. shoot jpeg for now.
comes with 18-55 lens with metal mount? MK III version.
body - look more like old rangefinder but b... 阅读全帖 |
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w****e
发帖数: 2210 | 32 Take a look at the list of ALL 51 improvements the X20 has over the X10,
1. 2/3-inch X-Trans CMOS II sensor without optical low pass filters improves
resolution to as much as a 4/3″ sensor.
2. S/N ratio improved to level similar to Full frame sensors.
3. Phase detection AF allows for AF speeds as low as 0.04secs (compared to
X10 0.16secs).
4. 1080p HD video @ 60fps (X10 1080p HD video @ 30fps).
5. Phase detection Autofocus also works during movie recording.
6. Face detection works during movie r... 阅读全帖 |
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z********i
发帖数: 629 | 34 No low pass (AA) filter (just like the D800E)
Improved software to suppress moiré
Expeed 4 imaging processor
sRAW
Same AF improvements like in the D4s
Improved low light capabilities
5 fps (6fps with the MB-D12)
Price between D800 and D800E - probably around $3000 |
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D****e
发帖数: 1122 | 35 D800E的小升级版本....主要是better ISO performance！！
36MP sensor
No low pass (AA) filter (just like the D800E, this time Nikon will only
introduce one model without the AA filter)
Improved software to suppress moiré
Expeed 4 imaging processor (they may call it Expeed 4a)
Higher resolution LCD screen
sRAW
4k video is unlikely
Same AF improvements like in the D4s
Improved low light capabilities: one stop better ISO performance
4 centre autofocus points
Built-in GPS
No Built-in Wi-Fi
5 fps (6fps with the MB-... 阅读全帖 |
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S******n
发帖数: 5022 | 36 有入魔说，1DX2快了。
http://www.northlight-images.co.uk/cameras/Canon_1Dx_mk2.html
2014 May 27th
We're told (thanks) that someone from Canon recently visited several studios
in NYC with a 'test' 1D X body for some well supervised tests. Images had
to be processed on a particular laptop that came along with the camera/
minder and no images were allowed to be retained.
The camera produced files of similar dimensions to a 5D3, but exhibited -
much- better colour rendition and detail, with no moire. The onl... 阅读全帖 |
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k**********s
发帖数: 6409 | 37
主要是自动对焦好，几乎没有AF hunting。也没有rolling shutter和moire等问题。
ETC非常有用。bitrate已经比较高了，不hack也很好。
其实用RAW的话（必须的），照片没问题，一点不比别的牌子差。
如果照相和录像都需要的话，Panasonic是不二的选择。反正我还没有发现更理想的。
A6000的对焦速度总算可以和Panasonic媲美了，但是没有ETC。
如果不是非要手动模式录像的话，G5就足够了，相当于傻瓜版的GH2，太便宜了。
这是我最近用G5照的，第一张是照片，第二张是视频截图，第三张是ETC视频截图。你
看就一个14-42的饼干头，照相和录像(包括长焦）都搞定。 |
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i**e
发帖数: 6810 | 38 谢谢讲解。Moire的确处理得比较好，rolling shutter还是蛮严重的，
可以看看DigitalRev那个GH2和60D PK。60D rolling shutter更差。
照片我主要是不喜欢小P的色彩，有一点偏色，不是很讨喜。
ETC那张截图貌似细节还是少了不少？拍录像有ETC，14-140还值得入不？
我原来有个这个头，照片都显得灰突突的 |
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i**e
发帖数: 6810 | 39 就是说两者锐度差不多,但X100s moire少? |
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g****d
发帖数: 3461 | 40 a. la http://nikonrumors.com
I can now confirm the the announcement date for the Nikon D800/E camera
replacement: June 26th. Here again are the rumored specifications:
The new mode will most likely be called D800s
36MP sensor
No AA filter (just like the D800E, this time Nikon will only introduce one
model without the AA filter)
Improved software to suppress moiré
Expeed 4 imaging processor (they may call it Expeed 4a)
New higher resolution LCD screen
sRAW
Improved video capabilities
Same AF impr... 阅读全帖 |
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s********e
发帖数: 2783 | 42 The Spanish site DSLRmagazine interviewed Akihiro Egawa and Makoto Kanai
from Sony. And here are some of the key info:
1) Asked why the new FE lenses are so big the answer was that if you want
goo optical quality you cannot reduce the size of the lenses.
2) The interviewer asked if the short flange distance and the limited E-
mount diameter is a major limitation for Sony lens designers. The answer was
no, for small focal distance lenses this kind of design helps us. The
opposite occurs with the ... 阅读全帖 |
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y*b
发帖数: 3190 | 43 http://www.sonyalpharumors.com/dan-chung-previews-the-a7rii-and
"Video expert Dan Chung from Newsshooter had the chance to test the
preproduction Sony A7rII and writes:
1) The S35 4K image really is free of any obvious errors – fine detail was
incredibly well resolved and there was virtually no evidence of aliasing and
moire at base ISO. When I looked at the image on a monitor it was very
clean. It had excellent detail and in S-Log2 there was certainly a lot of
information in the shadows and hig... 阅读全帖 |
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k**********s
发帖数: 6409 | 44
+1
我非常喜欢这样的楼，长见识，否则都不知道有莱卡Q这样的东西。如果没有郭美美，
我老现在都还不知道爱马仕为何物。
要鄙视的只是那些负担不起、还想的慌的。
这个Q进步还真不小，除了照片都出Moire，录像对焦（CDAF）不行，其它都不错了 -
终于不再用旁轴而有EVF了，AF和防抖也都有了，居然触摸屏都有了，A7R2都没有哇！
不过目前看到的样片，包括dpreview的，都是渣，主要是拍照的人渣，比如这几张： |
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l*x
发帖数: 396 | 45 代替手机拍照录像用rx100 iv就很好。单反录像moire条纹严重，aliasing和sharpness
都很差，比rx100一代还差不少。录像要做后期color grading，单反才有优势。 |
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d******d
发帖数: 2210 | 46 是在 LCD回放时候看到的 moire, 回头在电脑上看看。我感觉不应该这么差，毕竟松下
机主打视频。
视频还有其它建议设置吗？我用的是 default,只是格式换成了 4k.
100% |
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d******d
发帖数: 2210 | 47 稍微更新了一下，主要是视频在电脑上看没有moire，只有LCD上看有。
G7不错！ |
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l*x
发帖数: 396 | 48 视频存的是8位图像，远低于sensor动态范围。炮厂的机器加technicolor cinestyle相
当于canon log，视频动态范围很好，color grading也比较简单。另外摄像几乎没
moire条纹的单反少得可怜，除5d 3也找不出两个。 |
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y*b
发帖数: 3190 | 49 Pentax K-70 Features
24.24 effective megapixel, APS-C AA filter-less CMOS sensor
In-body "SR" shake reduction mechanism
Pixel Shift Resolutionwith Motion Correction
AA Filter Simulator: Moiré reduction using "SR" unit
PRIME MII processor with newly designed accelerator unit
1/6000th sec. - highest shutter speed in this class
High sensitivity, ISO 102400
SAFOXX 11-point hybrid auto focus system
Dustproof and weather-resistant
14°F (-10°C) cold-resistant construction
Vari-an... 阅读全帖 |
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y*b
发帖数: 3190 | 50 "Fuji X-T2 Vs. Sony A6300: “Fantastic Autofocus. Can compete with DSLRs. In
some cases tracks better than A6300” – TheCameraStoreTV
TheCameraStoreTV tested a pre-production X-T2… so take it with a grain of
salt for now. But it really seems that Fuji vastly improved Autofocus.
Chris tested the Fujifilm X-T2 against the Sony A6300, and says that the
performance is “very comparable to the Sony A6300, in some cases it
actually tracks better.” Also because, unlike the Sony A6300, the Fuji
gives you m... 阅读全帖 |
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