n**b 发帖数: 13203 | 1 测试表明,A99对焦神速。Nikon对焦系统又立功了!
“The final production A99 doesn’t have a built-in flash lamp (Editors
note: some prototypes with built-in flash were tested). There is a new hot
shoe for accys so a special link is delivered with this camera. The
Autofocus is really fast. The A99 (with non final firmware) has an ISO range
of 50-25600 (Editors note: Final firmware will probably have a +2 stop push
in High ISO). Camera is bit lighter than the A900 (973 g with battery). The
A99 weights 827g with battery.... 阅读全帖 |
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q*z 发帖数: 13362 | 2 直接看a99的full snr,由于半透膜和D600就是差1/3档.但是DXO测定a99虚标ISO 2/3挡.
最后得分就差出很多了.
这个虚标的结果,和dxo测试ISO的方法有关.dxo的测试iso方法,一直是被认为有缺陷的.
ISO12232规定了ISO的report 方法.基本原则是两个测试方法.Saturation-based speed
和Standard output sensitivity (SOS).DXO是只测Saturation-based speed.然后用这
个结果来判定iso虚标.a99吃亏很大
实际使用,是感觉不到虚标的.比如dpreview的测试,不认为a99有iso虚标. |
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S***E 发帖数: 1977 | 4 这个头听说是难得的厚道头。但是索尼的A口不像NC分减幅和全幅吧。索尼官网上A99是
和这个头适配的。这个头如果用在全幅A99上,必须使用减幅模式么?A99太新,大概还
没答案? |
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W********g 发帖数: 790 | 7 索尼全画幅计划被推迟,A99由今年春季改在9月发布,其他全画幅相机将在2013年出现。
据称,已有摄影师在测试A99 。它采用新的2400万像素的传感器,是以A77的ExmorHD传感器技术为基础(注:与A900那块传感器不同)。当然,它是配备电子取景器(改进型)SLT相机。相机ISO范围为ISO 100-ISO25.600。消息人士称,最终版本将可扩展ISO 50和高ISO 102400。虽然没有图像相比,但他们相当肯定会击败尼康D800高ISO。索尼内部经历了长时间的讨论,选择2400万像素的传感器,因为它噪点表现更好FPS速度更高。 |
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m**********u 发帖数: 238 | 8 没准A99奥运会试用一炮打响。。。A99+540.。。。 |
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q*z 发帖数: 13362 | 9 d600的销量一定远大于a99.
n家的第一台廉价全幅.意义多大呀,估计C家跳船的都会有不少.
A99只是多年便秘产品.sony的未来在nex上. |
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d******n 发帖数: 3014 | 10 Photo Rumors
Photography news, before it happens
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Sony RX1 full press release
By PR admin | Published: September 11, 2012
Here is the full press release for the Sony RX1 full frame compact camera:
Sony Introduces the World’s First Full-Frame Compact Digital Camera
New Compact Cyber-shot? RX1 Camera features 35mm full-frame image sensor and
wide aperture f/2 lens
SAN DIEGO, Sept 12, 2012 – For the first time, all the benefits of f... 阅读全帖 |
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d*****0 发帖数: 68029 | 11 sensor外的对焦系统是19点11个十字点,定价2800。。。
Sony Introduces New Full-Frame α99 Camera with Translucent Mirror
Technology and Dual AF System
Flagship α A-mount camera delivers new levels of image quality, focus
capabilities and video performance
SAN DIEGO, Sept 12, 2012 – Sony’s long awaited α99 digital camera sets a
new performance standard for professional-class DSLRs, combining all of the
benefits of full-frame imaging with the responsiveness and speed of
Translucent Mirror Technology.
The successor to S... 阅读全帖 |
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S***E 发帖数: 1977 | 13 无敌三对焦点多
A99的连续追焦能力更强?但是A99的追焦是不是仅适合于视频? |
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R***a 发帖数: 41892 | 14 你比一下A99和D600,同一台机器差一档的snr就是差3db,
对比图里两台机器两条斜线的垂直距离就基本上是3db, 所以是差一档。
就是按照标定ISO,里面正好画了32db那条虚线,过A99的是标定ISO1600, 32.2db
过D600是ISO3200, 31.1db,也差了2/3档
挡.
的.
speed |
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q*z 发帖数: 13362 | 15 之所以两者差3db,是因为,a99被判为虚标iso了,每一档横坐标都被往后挪了.
a99的分数就亏在这个虚标上了. |
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f*****w 发帖数: 2602 | 16 我看到现在那个a99的bundle很心动,想宾尼双修
就是不知道a99对焦点和高感到底比5d3之类差多少, 因为想双休主要就是因为这两个
原因,其他的宾家都挺好。要是入了后没啥太大区别就该又要退货啥的折腾了 |
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q*z 发帖数: 13362 | 17 重新看了一下.
a99和d600对比 snr差别在1.5db到2.4db,高感越高,相差越多
对比a55与d7000. snr差别再1db到1.5db,同样高感越高,相差越多
我觉得可以得出的结论是所谓的半透损失1/3 ev是相对于低ISO而言.
高ISO下半透损失的光的效果会被放大.而sensor越优秀,损失光的效果也会
越明显. a99由于半透造成了高感6400下比D600差2/3ev. |
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q*z 发帖数: 13362 | 18 只为高感和对焦点,我觉得a99不一定是最理想选择
为了高感你应该选6D或d600
a99的102对焦点很爽,但是范围偏小.而且只有原厂镜头才支持. |
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y*b 发帖数: 3190 | 19 nnovation never stops and 4K is just one step into the future. The camera
you see on top is the Arri Alexa 65 which already records 6K. And how is
Sony going to answer Arri’s move?
One of our sources told us Sony did show a new 8K camera prototype to the
BBC studio. The source present at the event said the camera looked like the
current Sony A99 but had a built-in vertical grip. Sony told them they could
start to sell that kind of camera as early as 2016.
http://www.sonyalpharumors.com/sr4-sony-... 阅读全帖 |
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g********r 发帖数: 8017 | 20 堪啥?A99是太祖,A100是太宗,A101是世宗。 |
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k*********g 发帖数: 160 | 21 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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R***a 发帖数: 41892 | 22 假。
A77刚到1600, 差不多密度的A99就102400了?
这是许多月前的rumor了 |
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k*********g 发帖数: 160 | 23 A77 APS-C 24Mp
A99 FF 36Mp,怎么也不可能跟A77同一密度啊?
要同一密度,FF就奔24Mp*(1.5)^2 = 54Mp去了。 |
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i****o 发帖数: 1183 | 24 Both D800 and a99 will have 36M sensor. How will Canon respond? |
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b********6 发帖数: 35437 | 25 Pro9000 III
Both D800 and a99 will have 36M sensor. How will Canon respond?
★ Sent from iPhone App: iReader Mitbbs Lite 7.28 |
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W********g 发帖数: 790 | 26 要是对焦够好,A99就是神机了:不低的像素,高ISO,高连拍。 |
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v***a 发帖数: 23651 | 29 你透露下A99里你埋了些什么bug
range
push
The
has |
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b********2 发帖数: 3189 | 30 D600和5D3是一个档次的
A99是适合二逼青年的玩具 |
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S***E 发帖数: 1977 | 31 索尼的问题是发布新产品太晚。这一波D800/5D3都发布了大半年了,A99还没出现。该
升级的用户早就升级了,原来的S用户恐怕不少等不及也跳船了。 |
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w****e 发帖数: 2210 | 33 24.3 Mpx Full frame CMOS Exmor sensor
SLT technology
New Bionz imaging engine
14 bit RAW recording
10 fps
ISO 100 up to 25.600
50 ISO extended (with lower dynamic range)
102 AF point AF (11 cross).
AF range
MF assist
Dual Phase detection system (with AF phase pixels on sensor)
30 sec and 1/8000 maximum shutter speed
Time Lag 0.05 sec.
Shutter life guarantee of 200,000 cycles
2.360k OLED electornic viewfinder
3″921k LCD with same til... 阅读全帖 |
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w****e 发帖数: 2210 | 34 俺就很奇怪,A99为什么比D600早一天?
看似有点惧怕D600。 |
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q*z 发帖数: 13362 | 35 这个11个十字很耐人寻味, a77也是11个十字, 但他是19点对焦
加上a99有sensor 相位对焦点.难道是a77的对焦sensor,剩下的点都在主sensor上. |
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w****e 发帖数: 2210 | 36 不牛不收钱。
A99明显指出画质比5D3强。却没有提D800。 看来佳能是共同的敌人。 |
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q*z 发帖数: 13362 | 38 5R机身看spec 进步很多呀.
多了相位对焦,(是不是和a99的一脉相承呢)
多了wifi,可以手机遥控. |
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d*********g 发帖数: 1695 | 40 A99 24.3 MP
D600 24.7 MP |
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w****n 发帖数: 5749 | 42 连拍才6……比a77都慢……完全没道理啊。不是一样的像素么,总不见得a99的数据处
理能力比a77还烂吧…… |
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q*z 发帖数: 13362 | 43 感觉a99的最大提高在video上,有音频控制,带XLR mic接口.hdmi输出 |
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w****e 发帖数: 2210 | 46 Why D600's sensor is not the same as A99? |
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d*****0 发帖数: 68029 | 47 看A99的ISO表现比D3X也好不了多少。。。。 |
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C****c 发帖数: 9157 | 49 A99 MSRP只要2800
不输D800的iso,不输5D3的对焦
还有大量的A口老头和ZA新头
快跳船吧
另外还有业界唯一可以转头的58灯.. |
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d*****0 发帖数: 68029 | 50 A99的sensor对焦点比奸商的强这么多啊? |
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