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全部话题 - 话题: autofocus
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C***I
发帖数: 242
1
来自主题: PhotoGear版 - Nikon 镜头:55-200和55-300差很多吗?
Yes, you can get from ebay, but there are little bit risk, if you don' have
a lot money, do not take the risk.
Unlike the D90 and D7000, the D5100 has no internal autofocus motor, so it
will not autofocus with original-style screw-drive AF lenses. With older-
style AF lenses it exposes and does everything perfectly, except that you'll
have to turn the focus ring manually and look either for a sharp viewfinder
image or the electronic focus confirmation dot at the bottom of the finder.
Another thi... 阅读全帖
R***a
发帖数: 41892
2
来自主题: PhotoGear版 - Pentax 奔了
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
d*****0
发帖数: 68029
3
来自主题: PhotoGear版 - A99悲剧了
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
l******8
发帖数: 9475
4
来自主题: PhotoGear版 - D600已经下单
http://www.nikon.com/news/2012/0913_dslr_01.htm
A FX-format camera with a body smallest and lightest among FX-format cameras
that offers excellent basic performance and a 24.3-megapixel image sensor
for superior imaging performance
TOKYO - Nikon Corporation is pleased to announce the release of the Nikon
D600. Despite having the smallest and lightest body among Nikon FX-format
cameras, the D600 offers advanced basic camera performance, and is equipped
with a new FX-format CMOS image sensor with ... 阅读全帖
w**7
发帖数: 5258
5
来自主题: PhotoGear版 - Pentax K-3
• 24 effective mega-pixels in an APS-C sized CMOS sensor
Designed for the demanding photographer, the K-3 features 24 effective
megapixels in an APS-C sized CMOS sensor for outstanding high resolution
imagery. By coupling this sensor with a newly developed PRIME III imaging
engine with high-efficiency noise and image processing capacities and an
anti-aliasing filter-less design, the K-3 delivers high-resolution, fine-
gradation images.
• Selectable Anti-Aliasing Filter
Enjoy the w... 阅读全帖
E******y
发帖数: 1314
6
全新未开包尼康D3100 kit,每个相机带2个镜头,380一套,共两套,your
shipping, 款到发货,billpay or boa transfer
Nikon D3100 14MP DSLR Kit with 18-55mm and 55-200mm Lenses
Kit Contents
Nikon D3100 digital camera
Nikon AF-S DX Zoom-Nikkor 18-55mm f/3.5-5.6G ED II lens
Nikon AF-S DX Zoom-Nikkor 55-200mm f/4-5.6G ED lens
Specifications
Nikon D3100
14.2MP DX-format CMOS sensor
Shoots 1080p Full HD video
3fps continuous shooting
11-point autofocus
3” LCD monitor
Live View shooting
Built-in sensor cleaner
HDMI output
90-day warrant... 阅读全帖
y*b
发帖数: 3190
7
来自主题: PhotoGear版 - Fuji X-T2 Vs. Sony A6300
"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
n*******w
发帖数: 6708
8
多谢, 这两个指标都代表什么啊?
number是越大越好还是越小越好?
samsung galaxy S7:
12 MP, f/1.7, 26mm, phase detection autofocus, OIS, LED flash, check quality。
Features
1/2.5" sensor size, 1.4 μm pixel size, geo-tagging, simultaneous 4K video
and 9MP image recording, touch focus, face/smile detection, Auto HDR,
panorama
Video
[email protected]/* */, [email protected]/* */, [email protected]/* */, HDR, dual-video rec., check quality
Secondary
5 MP, 1/4.1" sensor size, 1.34 μm pixel size, f/1.7, 22mm, dua... 阅读全帖
F*********o
发帖数: 2093
9
拍人像, 弄一个50mm定焦镜头就好了.
低档的Normal EF 50mm f/1.4 USM Autofocus Lens, $350左右.
高档的Normal EF 50mm f/1.2L USM Autofocus Lens, $1500左右.
不过我都没用过, 没啥实际经验在里面. 我都是走N家路线的, C家的机器镜头都不熟悉
.
b*****s
发帖数: 1124
10
在摄影版登了广告, 想买的全是在东岸, 中部。 运费太贵。
想湾区Local卖, 最好南湾。 跟佳能单反T4i spec 一样,不过比较轻, 没有反光镜
红色。
http://www.amazon.com/Canon-Compact-Systems-Camera-3-0-Inch/dp/
18MP APS-C 'Hybrid CMOS' sensor
Continuous autofocus in movie mode with subject tracking
14-bit DIGIC5 processor
ISO 100-12800 standard, 25600 expanded
4.3 fps continuous shooting, 3 fps with autofocus tracking
1080p30 video recording, stereo sound (with 25p or 24p options)
External microphone socket and adjustable sound recording level
1040k dot 3:2 ... 阅读全帖
t******2
发帖数: 2265
11
来自主题: PhotoGear版 - NEX5 VS XT2i 谁个说说?
NEX 5:
Shutter Lag,
Full Autofocus 0.441 - 0.444 sec
Shutter Lag,
Prefocused 0.115 sec
Shot to Shot time 0.77 sec
Continuous Speed 2.68 fps
(38 shots)
XT2i
Shutter Lag,
Full Autofocus 0.252 sec
Shutter Lag,
Prefocused 0.096 sec
Shot to Shot time 0.44 sec
Continuous Speed 3.64 fps
(10 shots)
拍多动的娃,NEX5够用吗?
IQ哪个更好?差的多吗?
w********t
发帖数: 10
12
来自主题: PhotoGear版 - Canon 70-200mm 选择
想买个长焦,有3个选择,请大家帮忙参考。多谢!
1. Zoom Telephoto EF 70-200mm f/2.8L IS USM Autofocus Lens (about $1900)
2. EF 70-200mm f/4L IS USM Lens (about $1200)
3. Zoom Telephoto EF 70-200mm f/2.8L USM Autofocus Lens (about $1300)
M******n
发帖数: 144
13
来自主题: PhotoGear版 - Canon tele lens, which is better?
Canon Telephoto EF 400mm f/5.6L USM Autofocus Lens
vs.
Canon Zoom Telephoto EF 100-400mm f/4.5-5.6L IS (Image Stabilizer) USM
Autofocus Lens
which is better?
price 1269 vs. 1610
thanks
a***a
发帖数: 40617
14
来自主题: PhotoGear版 - 万佛,这个E-PL1算deal么
谁说epl1没自动追焦了
Track Your Subjects Wherever They Roam
The E-PL1's Continuous Autofocus (C-AF) Tracking and Autofocus (AF) Target
Registration locks your subject into focus and constantly adjusts focus and
brightness whether you or your subject is moving. With this mode, a simple
push of the shutter release enables you to keep moving subjects in focus--
tracking them from left to right and from front to back--within the frame,
automatically ensuring that even active subjects, like kids playing spor
b******2
发帖数: 1019
15
来自主题: PhotoGear版 - 准备帮老爸从BH一次性买这些
老大们给看看,提个建议啥(价格更合理,买家可靠的丢之类) --谢谢
1。 Canon EOS 5D Mark II Digital Camera Kit with Canon 24-105mm f/4L IS USM
AF Lens
B&H #CAE5D224105 • MFR #2764B004 Free Shipping (USA) * $3,299.95
2。 Canon Wide Angle EF 35mm f/1.4L USM Autofocus Lens more info
B&H #CA3514LEF • MFR #2512A002 $1349.95

Canon EF 70-200mm f/2.8L IS II USM Lens
USA B&H #CA7020028LIQ • MFR #2751B002 $2299.00
(original plan: Canon Normal EF 50mm f/1.2L USM Autofocus Lens
USA B&H #CA5012LEF • MFR #12
R***a
发帖数: 41892
16
来自主题: PhotoGear版 - Phase AF的小dc出来了
http://www.imaging-resource.com/PRODS/F300EXR/F300EXRA.HTM
The new generation Super CCD EXR chip retains all of these advantages, but
also adds on-sensor phase detection autofocus pixels, allowing the same
speedy focusing technique that's prevelant in the world of digital SLRs,
rather than the typically slower contrast detection autofocus that's been
used in compact digital cameras to date.
b****1
发帖数: 3685
17
来自主题: PhotoGear版 - m43的旅游镜头14-150mm跌破$500
O的M9-18和14-150都是对视频优化了的
http://www.olympus-global.com/en/news/2010a/nr100203zuikoe.html
# Circular aperture mechanism
A circular aperture mechanism is used to assure smooth, even background
defocusing.
# Superior operating ease
High-speed autofocus
The inner focusing mechanism uses a light, compact, single-element unit to
enable exceptionally fast, quiet autofocusing for smooth, stress-free still-
image and movie shooting.
Smooth manual focus
The manual focusing mechanism is designed to offer a
e**n
发帖数: 5876
18
来自主题: PhotoGear版 - Olympus PEN E-PL1初步印象
imaging-resource上测
D5000, Full Autofocus Single-point AF, Optical Viewfinder 0.276 second
GF1, Full Autofocus, Single-area AF mode 0.473 second
p****x
发帖数: 4260
19
来自主题: PhotoGear版 - 出售 佳能镜头 canon
is this review true? it should only be used with Sigma lenses for reliable a
utofocus operation
from
http://www.photographyreview.com/mfr/sigma/35mm-converters/PRD_85031_3132crx
.aspx
Excellent results for an inexpensive T/C works well on the Nikon 300mm f4 b
ut does not autofocus on my lens. Called Sigma and they state it should only
be used with Sigma lenses for reliable autofocus operation... other lenses
may not work properly. (This is also clearly spelled out in their instructio
n manual -
J*******3
发帖数: 1651
20
来自主题: PhotoGear版 - 配Canon 550D/T2i, 哪个镜头好?
配Canon 550D/T2i, 想来个一镜走天下的, 下面哪个镜头好?
1) Tamron,
Zoom Wide Angle-Telephoto AF 18-250mm f/3.5-6.3 Di-II LD Aspherical IF Macro
Autofocus Lens for Canon Digital EOS $299.00
2) Sigma
18-250mm f/3.5-6.3 DC OS HSM IF Lens for Canon Digital SLR Cameras $479
3) Canon
EF-S 18-200mm f/3.5-5.6 IS Autofocus Lens for Select Digital SLR Cameras $
595
谢了
j*********6
发帖数: 272
21
来自主题: PhotoGear版 - 呼唤D3和各位nikon大神。。。
D3和各位大神们,你们用过D700和D7000,蛮烦比较一下两者的优劣吧.我不关心视频,
只在乎拍照。
谈谈低ISO下的细节,高ISO下的降噪,测光的准确性,暗光和强光下的autofocus,运
动物体
autofocus的准确性,白平衡的准确性(不同色温环境下转换),都比较的谈谈。谢谢
各位了。。。
t******2
发帖数: 2265
22
来自主题: PhotoGear版 - 想拍高清录像,有啥建议吗
The Canon 60D inherits the Rebel T2i's unusual ability to use autofocus
during movie recording. Continuous autofocus isn't available, so you have to
manually trigger single AF operations as needed with a half-press of the
shutter button.
N********n
发帖数: 543
23
来自主题: PhotoGear版 - 问个450D的问题....
focus, 或者所autofocus,现在在Av, Tv, M, P这几个非傻瓜档,全部只有最左面那个
能lock,其他的都没反应了.....但是打
到全自动档,或者那种人像,风景档, 全部点都可以autofocus....换了俩镜头都是一样
现象
现在俺也不知道是自己误操作按了啥奇怪组合,还是机器真的坏了...
(真是怪,昨天一说要买7D,这就出事.....俺不过就先想想....)
tm
发帖数: 1614
24
CES is getting closer (it starts on January 6th) so why not take a look on
what’s coming from Sony? According to our sources Sony will launch a huge
ammount of new compact cameras (no Alpha and no NEX). We received that small
image leak that shows some f the new cameras. One camera should be the
Cyber-shot DSC-HX1 successor. We were told that there will be new Bloggie
cameras (with bigger screen), new 2D and 3D videocameras. They will feature
some of the features Sony introduced in NEX and Alpha... 阅读全帖
b*******s
发帖数: 6139
25
Wiki...
Film 35 mm SLR cameras with autofocus
Nikon AC-2E Data Link System (1993)
* Nikon F3AF (1983, modified F3 body with Autofocus Finder DX-1)
* Nikon F-501 (1986, known in North America as the N2020)
* Nikon F-401 (1987, known in the U.S. as the N4004)
* Nikon F-801 (1988, known in the U.S. as the N8008)
* Nikon F4 (1988)
* Nikon F-401S (1989, known in the U.S. as the N4004S)
* Nikon F-601 (1990, known in the U.S. as the N6006)
* Nikon F-401X (1991, known in ... 阅读全帖
m*******o
发帖数: 4236
26
http://www.canonrumors.com/forum/index.php/topic,1165.0.html
My Prediction for the new EOS Lineup
« on: June 23, 2011, 09:56:19 AM »Here is my wild prediction for
the future of the Canon EOS Lineup
1D & 1DS lines to be combined into a new 1Ds Mark 4
Canon EOS 1Ds Mark 4
Full Frame with 40 MP
45Point AF All Cross Type with Eye track focus point selection
10FPS up to 100 frames raw, 300 jpg
Dual Digic 5 processors
ISO 25-204800 (low noise to iso 1600)
2k video
3.5 LCD with full HD res,... 阅读全帖
n**b
发帖数: 13203
27
看最后一段就够了。
“I can tell you though that the NEX-7 feels good in the hand. I only got to
use the camera for about a minute but the EVF is superb. It reminds me of
what it’s like looking at an iPhone retina display. You simply can’t see
the pixels because they are so small. I didn’t see any rainbow effects and
the refresh rate was super fast. There is still a tiny bit of lag when
panning but it’s much improved. I tested it inside a somewhat dark
restaurant, performance may be better in good lighting... 阅读全帖
t********y
发帖数: 21
28
曝光模式
P:(program AE)程序自动曝光
A:(aperture priority)光圈优先自动曝光
S:(shutter priority)快门速度优先自动曝光
M:(manual)手动曝光
测光模式
CW:(centre-weighted average)中央重点加权平均测光
SP:(spot metering)点测光
MS:(multi-segment)多分区测光
闪光模式
A: (auto flash)自动闪光
RE:(red-eye reduction)防红眼闪光
SL:(slow syn.flash)慢速同步
OF:(OFF)关闭
FI:(fill-in flash)填充式闪光
RF:(rear flash sync)后帘同步
WR:(wireless/remote flash)无线/遥控
E-TTL:(evaluated TTL)评估式TTL
取景器
镜头标识
AD:(anomalous dispersion)异常色散
AE:(auto exposure)自动曝光
AF:(autofocus)自动对焦
AF-I:(AF nikkor)尼康内置马达的镜头
AF-S... 阅读全帖
N**********r
发帖数: 351
29
来自主题: PhotoGear版 - 需要T2i的可以考虑下
From BH:
Canon EOS Rebel T2i Digital SLR Kit w/ EF-S/18-55 IS II
Price: $589.95
Canon 75-300mm f/4.0-5.6 III Autofocus Lens
Reg: $154.95 Savings: $100.00 Discount Price: $54.95
Canon EF-S 55-250mm f/4-5.6 IS Autofocus Lens for Digital SLR Cameras
Reg: $229.00 Savings: $150.00 Discount Price: $79.00
Bundle Total: $723.90
r****r
发帖数: 105
30
来自主题: PhotoGear版 - canon 35L 全名是什么?
看到 EF 16-35mm f/2.8L II USM Autofocus Lens 和 EF 35mm f/1.4L USM Wide-
Angle Autofocus Lens
大家说的是哪个?
x****c
发帖数: 25662
31
来自主题: PhotoGear版 - 马鬃X-pro1用户review,对焦亮了
"In terms of performance, I'll compare it to the Panasonic GF1 /w 20mm panca
ke, as it's a camera I'm very familiar with."
...
"Focus speed: In my experience, the X-Pro1 autofocus speed and reliability i
s very similar to the the GF1. While I haven't done millisecond timing to co
mpare them, I can say that they feel about the same in autofocus performance
."
这种电子光圈很悲剧啊,光圈显示还lag
c*****u
发帖数: 331
32
尼康的D5100好像最开始有的
The D5100 delivers exceptionally high-quality movie performance due to its
full HD capability while the latest in Full-time autofocus takes the guess
work out of tracking your subjects while in motion. Effortless moviemaking
is at your fingertip thanks to D5100's ergonomically placed Live View and
Movie start button. Your D-Movies will come to life thanks to D5100's sound
recording capability - get stereo sound with Nikon's optional ME-1 Stereo
Microphone.
然后尼康D7000也有
Nikon’s D70... 阅读全帖
c********l
发帖数: 8138
33
看到了:
The process of autofocusing generally works as follows:
(1) An autofocus processor (AFP) makes a small change in the focusing
distance.
(2) AFP reads the AF sensor to assess whether and by how much focus has
improved.
(3) Using the information from (2), the AFP sets the lens to a new focusing
distance.
(4) The AFP may iteratively repeat steps 2-3 until satisfactory focus has
been achieved.
Thanks a lot!
r*******d
发帖数: 958
34
来自主题: PhotoGear版 - D600 VS D700 D800 (一朋友个人观点)
一铁丝朋友,业余选手,nikon的相机镜头除了大炮基本摸遍了,
最近卖了他D700,D7000,D300s,入了D800,D600。
下面是他邮件中回复我D600怎么样。 分享一下,觉得有用的赏个包子
Generally, I like the D600 the best of all I have tried: D90,D300, D300s,
D700,D7000, even D800 (and of course, D3200)
What’s good:
Lighter and smaller (sort of) than D700,D800
Has same autofocus as D800, (but has fewer points and they are crammed more
in the center)
Makes great JPEGS, auto white balance and auto iso work really well
$1000 less than a D800
Has the user defined U1 U2 buttons if th... 阅读全帖
d******y
发帖数: 11545
35
这个bundle不错:
Canon EF 50mm f/1.4 USM Standard AutoFocus Lens and Canon EF-S 55-250mm f/4-
5.6 IS II IS Telephoto Zoom Lens combo $428, Oct 27
Adorama has Canon EF 50mm f/1.4 USM Standard AutoFocus Lens and Canon EF-S
55-250mm f/4-5.6 IS II IS Telephoto Zoom Lens combo for $428 with free
shipping.
c*********y
发帖数: 1461
36
来自主题: PhotoGear版 - Canon T4i 镜头18-55mm $680能收了吗?
Canon EOS Rebel T4i 18MP Digital Camera w/ 1080p HD Video with Autofocus &
18-55mm IS Autofocus Lens!
m***i
发帖数: 2480
37
来自主题: PhotoGear版 - MS 5D III 2499
autofocusing system, not focal point. see the following video for how mark
ii and mark iii autofocusing is different
http://www.youtube.com/watch?v=D3Ums46kKsE
L****n
发帖数: 12932
38
来自主题: PhotoGear版 - 最终买Nex6相机,请拍照问题请教
一个是对焦, 一个是曝光。 两个分开调。
如果autofocus让你满意, 就设那好了。 对焦灯在menu下设定, menu>setup>AF
illuminator. Nex6 is great that let u manually micro adjust even with
autofocus. Make sure u set the focus peaking under setup as well.
曝光在P模式下是锁定的, Make sure u don't have the exposure compensation set
at minus. Once u comfortable with all the setting under P, graduately
migrate to M, which don't have any preset.
p*********r
发帖数: 4593
39

Again, as I mentioned. The photo is not as good as Canon G1X, but
its autofocus and video performance is much much better than Canon.
If you read the review, its autofocus almost no delay. I will have more
than 50% time to take video using this camera, especially interested in
taking those 400FPS video. I wish I can go back to my child time to record
those "斗蟋蟀,斗鸡"的场面. The $445 price pretty much gives me 10X zoom. GX1
price only
include 4x zoom.
d*********g
发帖数: 1695
40
来自主题: PhotoGear版 - B&H 卡农活动
Canon EF 16-35mm f/2.8L II USM Autofocus Lens $1,399
Canon EF 50mm f/1.2L USM Autofocus Lens $1,299
Canon EF 70-200mm f/2.8L IS II USM Telephoto Zoom Lens $1,999
Canon EF 24-70mm f/2.8L II USM Zoom Lens $2,099
Before CashBack
BH 2%, Extra Rebates 1.75%, CC ?%
p*********r
发帖数: 4593
41
Sony NEX-6 and NEX-5R autofocus is still slower then OM-D5, Nikon J1/V1 and
Panasonic G series even after Sony added phase detection(in addition to the
contrast detection). If Sony can improve the autofocus performance, NEX
series will be the King of mirrorless.
q********1
发帖数: 860
42
来自主题: PhotoGear版 - EM5 拍娃+旅游靠谱吗
我上网搜了一下,恰巧您的这些镜头都是慢头。EM5 会不会有点冤。 我觉得40-150mm
都比其他的快很多。
一下是网友对这些头的测评。 就搜索关键词slow 就可以了
1. Olympus ED 14-150mm
This review is from: Olympus ED 14-150mm f/4.0-5.6 micro Four Thirds Lens
for Olympus and Panasonic Micro Four Third Interchangeable Lens Digital
Camera (Electronics)
This lens is a fine addition for anyone with one of the new Olympus four
thirds cameras, i.e. the EP-1 or EP-2. It's about half the size and weight
of a comparable SLR lens and the image quality is excellent. My only gripe
is... 阅读全帖
k**o
发帖数: 3006
43
☆─────────────────────────────────────☆
today222 (道.道.道) 于 (Sun Jan 6 21:58:52 2013, 美东) 提到:
严重中毒,NEX6+peaking全手动M档,爽死了,快,快推荐个镜头吧,各位大侠们。
个头不大于1650, 要有行程,有阻尼感,大光圈越大越好,焦段等效在25~75之间,定
变均可,画质要好。
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hulunbei (hulunbei) 于 (Sun Jan 6 22:40:33 2013, 美东) 提到:
以前在5d2上用5 inch的Marshall外置显示器peaking对焦录像,没有100%放大对焦也不
准。我觉得peaking没有7寸以上的外置显示器实用价值都不大。

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dsb (大手笔) 于 (Mon Jan 7 10:36:57 2013, 美东) 提到:
别忘了nex6有EVF外加自动放大的,比你的... 阅读全帖
z***i
发帖数: 1122
44
来自主题: PhotoGear版 - Nikon 60/2.8G 怎么样?
觉得100mm长了一些,狭窄的地方不好用.
Canon 60/2.8是残幅用的,MP-E 65mm f/2.8不能autofocus吧.
是不是CN家,全副比100广的,能autofocus的macro就是N60/2.8G?
这个头出片怎么样?
g****a
发帖数: 556
45
网上找来的
The Canon EOS M's autofocus system operates in one of three modes: Face
Detection & Tracking AF, Multi-point AF, or Single-point AF. A total of 31
autofocus points are available.
k**o
发帖数: 3006
46
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lanxuan (lanxuan) 于 (Thu Jan 31 00:08:05 2013, 美东) 提到:
请问单反相机和Camcorders拍出来的视频哪个效果更好?
例如:CANON T3i和Sony - HDRXR260 160GB HD 比较起来,哪个拍出来的风景和人物
的视频效果更好。
我打算买个Camcorder,但是看了一下单反拍出的效果很漂亮,要是买单反的话还可以拍
照片。
请大家指教,多谢!
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dynkin (化神奇为腐朽) 于 (Thu Jan 31 00:12:12 2013, 美东) 提到:
单反效果好,但是难用,特别镜头对焦不好效果反而更差。
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lanxuan (lanxuan) 于 (Thu Jan 31 00:14:11 2013, 美东) 提到:
多谢您回复,请问现在不是单反不都是自动对焦... 阅读全帖
D****e
发帖数: 1122
47
rumor了这么久的a77II终于出来了。。不过a口的颓势是很难挽回了
sony又打对焦牌79个对焦点....12fps连拍...
Sony SLT-A77 II key specifications:
24MP CMOS Sensor with gapless, offset microlenses
12fps continuous shooting with autofocus (up to 60 JPEGs)
79 point AF module with 15 cross-type AF points, covering 40% of frame
Increased control over AF behavior
1080p60 movies with autofocus
Audio level monitoring during movie shooting
2.4M dot OLED viewfinder
Pull-out three-hinge tilt/swivel 1.23m dot White Magic LCD screen
Built-in Wi-Fi wit... 阅读全帖
y*b
发帖数: 3190
48
1) First of a complete new generation of interchangeable Full Frame E-mount
camera(s). Which means the tech is redesigned from ground up!
2) Complete new sensors (this means brand new tech and huge bump forward in
quality). I hope to get details about that soon but it should have “many”
Megapixels.
3) Use of an advanced version of the hybrid A6000 autofocus system.
4) Unlike the current A7 series this new generation of FF E-mount cameras
are made for the very PRO market! Designed to challenge th... 阅读全帖
J********o
发帖数: 17447
49
来自主题: PhotoGear版 - 才知道Leica是最先发明AF的
Between 1960 and 1973, Leitz (Leica) patented an array of autofocus and
corresponding sensor technologies. At photokina 1976, Leica had presented a
camera based on their previous development, named Correfot, and in 1978 they
displayed an SLR camera with fully operational autofocus.
然后高层觉得大家不喜欢AF, 于是把专利卖给了minolta..
这是纯纱布.. 眼光短浅..
N*****e
发帖数: 2573
50
来自主题: PhotoGear版 - Sony A7 ii, amazon review
I bought my A7ii here on Amazon and got it the first day of release. In this
review, I'm going to assume you know the basics about the A7 series, and go
straight to the pros and cons of the new camera.
PROS
*In Body Steadyshot - This is the marquee feature and for good reason. Now
ALL of your lenses have image stabilization - including those 40-year old
Nikkors and Leicas. It's amazing and it works. Of course the stabilization
is more helpful with lenses towards the telephoto end of the spectrum... 阅读全帖
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