m*******n
发帖数: 519 | 1 那天在Amazon上看到的一直在$900 啊，个人原因不想碰refurbished或者灰货。google
了一下，摘抄了一段：“ with all other things equal, LiveView autofocus is
more accurate than viewfinder autofocus. This is due to the fact that
Liveview uses a Contrast Auto Focus system which is a closed system and uses
feedback from the actual data from the sensor. Meaning it keeps measuring
and adjusting itself untill it has the optimal focus result.
Viewfinder uses Phase Auto Focus which in essense "predicts" what the focus
should be and then sets th... 阅读全帖 |
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H**E
发帖数: 620 | 2 大家看看值不值的入。 本人纯新手一个，前几周刚刚买了NIKON D3300套机自带俩镜头
的。 平常主要是拍娃室内室外都有。偶尔拍拍风景之类：
*Nikon 24mm f/2.8D Nikkor Autofocus Lens $300 obo
*Nikon 85mm f/1.8 D Autofocus Lens $325 obo
*Tokina AT-X 16-28mm F/2.8 PRO FX $425 obo (with box)
*Tamron SP AF70-200mm F/2.8 Di LD(IF)MACRO $475 obo (with box)
大家看看哪个镜头性价比最好，最适合我的是哪个。值不值得入。 多谢了！ |
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y*b
发帖数: 3190 | 3 zz from SAR
http://www.sonyalpharumors.com/official-zeiss-announces-a-new-b
Official! Zeiss announces a new BATIS lens line for Sony FE: 25mm f/2.0 and
85mm f/1.8 to ship in summer!
Amazing! Zeiss just announced a new lens line for Sony FE mount! it’s the
autofocus BATIS line and the two first lenses will be the 25mm f/2.0 and
85mm f/1.8. Here is the press text:
The new ZEISS Batis 2/25 and 1.8/85 lenses are the first full-frame
autofocus lenses with an OLED display for the mirrorless Sony α ser... 阅读全帖 |
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m*******n
发帖数: 519 | 4 http://www.dpreview.com/reviews/nikon-d750/9
这里面讲了些，主要是autofoucs module的安装位置有偏差，DPReview用的两台D750
同样的镜头需要AF fine tune在机身上
“Implications for autofocus accuracy
Given that the problem arises from the placement of the AF module, we were
curious to check for any effects on focus accuracy. Since we were lucky
enough to have two D750 bodies with differences in severity of the flare
issue, we tested both bodies for front/back-focusing issues relative to one
another, with two different prime lenses: both... 阅读全帖 |
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y*b
发帖数: 3190 | 7 "Specification lists this detailed about a camera a few months away are
rarely accurate, but we’re posting it for the purpose of discussion. These
specifications come from an unknown source.
What’s most interesting is the mention of the camera coming with a version
of Android which will replace the DRYOS system developed by Canon that is on
the current EOS 6D. What advantages that could have, I’ll let the software
techs out there comment in the forum.
I will note that this source said they’d be ... 阅读全帖 |
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y*b
发帖数: 3190 | 8 "A new Sigma Art series lens has leaked. It looks like Sigma is adding a
20mm f/1.4 DG Art to their already stellar Art series lineup.
Sigma 20mm f/1.4 DG Art Specifications:
Designed for 24×36 DSLR cameras
Lens construction: 15 elements in 11 groups
One large-diameter aspherical element
Two FLD elements and five SLD elements to best correct chromatic aberrations
In-lens HSM autofocus motor. New mechanism for full-time manual override in
autofocus mode
Total length: 129.8mm
Maximum diameter: 90.... 阅读全帖 |
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f********i
发帖数: 563 | 9 刚升了一下，升级挺多的，本来准备出的，现在有点舍不得，再玩一段时间吧。
感觉对焦快了很多。Tracking是个大的改进。
1. New AF System
(1)New AF system with Zone and Wide/Tracking modes for effortless capture of
moving subjects. (*)
The AF System complements the fast and accurate 49-single-point autofocus
system with new Zone and Wide/Tracking modes, which use 77 autofocus points
across a wider area to substantially improve the camera's ability to capture
moving subjects.
(2)Improvement of AF accuracy.
Single-point AF divides the focus area into small... 阅读全帖 |
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c*********e
发帖数: 774 | 10 爱因斯坦还是爱迪生的错误。
我买了一个sony a7r2，又买了一个清仓大降价佳能70d。
我的想法sony拍风景，70d打鸟
但是有人说为什么不用sony打鸟，虽然crop sensor有1.6 factor，600mm就是960mm，
但是索尼42mp，70d只有20mp，所以还是索尼a7r2打鸟好。
但是我想问问，sony是不是只有tamron 150-600 + la-ea4，才能全程autofocus，
sigma+ mbiv只能autofocus到250mm？ sony加了la-ea4是不是对焦比较慢。
我是否犯了大狗走大洞小狗走小洞错误。现在还没开盒子，要不要把70d退掉呢。
有没有大师说说 |
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y*b
发帖数: 3190 | 11 zz from SAR
Sony’s next A7III camera will be announced in October-November. And it will
be in the same pricing class of the soon to be announced new 6DmarkII (full
specs and images at CanonWatch). So here is the question: Will the A7III
trump the 6D mark II? Let’s compare the rumored specs:
1.Sensor (A7III wins):
The Canon has a 26MP sensor and the A7III will have a new 24MP sensor. I
expect the Sony sensor to beat the Canon.
2.Autofocus (A7III wins):
The Canon has Dual pixel CMOS AF and 45 poin... 阅读全帖 |
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t********h
发帖数: 456 | 12 BSI 42.2 MP full frame sensor same sensor
4K HDR video
ISO 100 to 32000
10fps
14 bit raw for everything including continuous shooting
5 axis stabilization to 5.5 stops
Physical dimensions are identical to the Sony a7r II
Joystick from the Sony a9
15 stops of dynamic range due to the processor of the camera. This is
only at low resolution but they’re not sure how high of an ISO that will
extend to
Autofocus from a9
Eye AF operates at double the speed
... 阅读全帖 |
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w*******y
发帖数: 60932 | 13 Canon EOS Rebel XS Black with EF-S 18-55IS DSLR:
http://shop.usa.canon.com/webapp/wcs/stores/servlet/product_10051_10051_204269_-1
Features
10.1 Megapixel CMOS Sensor
Canon?s CMOS (complementary metal oxide semiconductor) sensor captures
images with exceptional clarity and tonal range, and offers the most pixels
in its class. It offers many of the same new technologies first seen in
Canon?s professional EOS-1D Mark III to maximize each pixel's light
gathering efficiency. It?s an APS-C size senso... 阅读全帖 |
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w*******y
发帖数: 60932 | 14 Have been watching this kit for months, this price is the lowest one so far.
Link:
http://www.buy.com/prod/pentax-k-x-digital-slr-camera-kit-12-4-
Pentax K-x Digital SLR Camera
Choose a camera that redefines the entry-level digital SLR category. The
PENTAX K-x offers high-end features including Live View, HD video and
photographic performance that challenges higher class models.
Pentax smc P-DA 55-300mm F4-5.8 ED Auto Focus Telephoto Zoom Lens
The versatile DA 55-300mm ED zoom lens offers an ext... 阅读全帖 |
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w*******y
发帖数: 60932 | 15 US Appliance has Panasonic DMC-FX55 8.1 MegaPixel Digital Camera with 3.6x
Optical Zoom
in Black or Silver for $69
*Must add to cart to see discounted price*
Shipping is $5.99
8.1-megapixel CCD captures enough detail for photo-quality 16 x 22-inch
prints
3.6x wide-angle image-stabilized optical zoom; 3-inch LCD display
Intelligent Auto Mode with Face Detection and Intelligent Scene Selector
Intelligent Image Stabilization
High-Sensitivity mode shoots at an ISO equivalent of 6400; Continuous
Auto... 阅读全帖 |
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w*******y
发帖数: 60932 | 18 Link:
http://www.cowboom.com/deal-of-the-day.cfm
$149.99 + $5 SHIPPING
HTC Flyer Android Tablet with 16GB Internal Memory and 7in LCD - White
This tablet is a fast, portable and lightweight device that easily fits in a
jacket pocket when you're on the go. The intuitive HTC Sense experience
delivers quick access to your e-mail, calendar and friends and lets you
enjoy your favorite music, videos, games and more.
Features
Android 2.3 Gingerbread operating system
With HTC Sense allows you to stay co... 阅读全帖 |
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w*******y
发帖数: 60932 | 19 Pentax k5 via Ebay daily deals:
http://iway.org/9634711
This is a GREY market product! The listing above says that it is brand new,
factory sealed, but that it is an imported product that does not carry the
standard Pentax warranty. But for some, this might be ok to save a few
bucks...
That said, I have this camera and it is amazing. I regularly shoot at iso
12800 with very few concerns about the image being too noisy. See the links
below to see what this sensor can do in these very demandin... 阅读全帖 |
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p***e
发帖数: 3852 | 20 2M像素是由它的工作方式决定的。这两台相机应该是没有调焦(autofocus)功能的。没
有调焦，大像素得不到清晰图像，2M左右的像素正好。
下面讲讲为什么没有调焦。首先这是人类第一次在火星上拍照，当然是要把所有的景象
都拍到，而不是聚焦在某一点上。这有点像上面说的保安摄像头，拍全貌比拍细节重要。
另外调焦部件在这种极端温度下，可靠性和精确性都是大问题，马达卡住了就完蛋了。
没有调焦，NASA只能用2M左右的像素。他们用了两个不同焦距的镜头，应该是一个拍的
远景清楚些，一个拍近景清楚些。 |
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y*h
发帖数: 25423 | 21
要。
It is NOT the first time to take pictures on Mars. Manmade machines have
taken pictures on Mars since decades ago. It makes no sense NASA use a non-
autofocus lens on it. |
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p***e
发帖数: 3852 | 22 没有人现场实时来取景和对焦，有autofocus也是白搭。你会错过所有景深以外的物体
，相机自己不知道该拍哪个物体，通信手段的限制也让老美无法通过远程控制来做到这
一点。 |
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t**d
发帖数: 6474 | 23 又外行了不是？你以为单反是用的image sensor 上的autofocus？
现在非单反的高档CMOS sensor都是在sensor上做PDAF （赶紧google，看看是什么东西
呀），牺牲一部分画质，对焦速度跟单反类似。 |
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t*******t
发帖数: 267 | 24
sensor
我原文说的是 image processer autofocus, 这两个是并列关系，哪怕是智商80也不会
理解为修饰关系
现在单反的难度主要在 image processor和自动对焦模块, 1Dx上那块 digic 5+芯片不
是那么好做的
话说你对现代相机结构一无所知啊，否则不会误解我说的话啊 |
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t**d
发帖数: 6474 | 25 您的智商真高，居然会写image process autofocus,还有各种解释。
image processor为什么在单反上就有难度？ 手机上的高像素感光器像素数也不少，难
道难度就不大？
auto focus有个屁难度，PDAF从原理到处理都非常简单。 |
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x**********e
发帖数: 924 | 26 二手交易风险自负！请自行验证是否合法和一手卡！:
我想卖的物品:
Canon EOS-5D Mark II Digital SLR Camera bundle
Canon EOS-5D Mark II Digital SLR Camera Body Kit - Canon EF 50mm f/1.8 II
Standard AutoFocus Lens - USA Warranty - SanDisk 16GB Extreme Compact Flash
Memory card - Slinger Camera Bag - Additional LP-E6 Battery - FREE: Red
Giant Adorama Production Bundle for PC/Mac a $599.00 Retail Value
单张面值:
可接受价格(必须明码标价！):
2200
物品新旧要求:
new，sealed
邮寄方式要求:
YL
买卖双方谁承担邮寄损失(Required if not code only):
before me after you
付款方式说明:
BOA onl... 阅读全帖 |
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a****a
发帖数: 363 | 27 Canon EF 50mm f/1.4 USM Standard AutoFocus Lens $315
Canon EF-S 55-250mm f/4-5.6 IS II IS Lens $142
brand new
drop from OR |
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x*********h
发帖数: 2223 | 28 我想要的物品:
Tokina 11-16mm f/2.8 AT-X 116 Pro DX Autofocus Lens for Nikon DX-Format
DSLRs
单张面值:
可接受的价格(必须明码标价！):
$490 or tell me your price
物品新旧要求:
New & Sealed
or secondary with your price
邮寄方式要求:
ML
买卖双方谁承担邮寄损失(Required if not code only):
Before you, after me.
付款方式说明:
BOA transfer
其他补充说明:
广告的有效期:
till got.
物品来源:
Legally
我的联系方式:
PM |
|
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x**********e
发帖数: 924 | 30 二手交易风险自负！请自行验证是否合法和一手卡！:
我想卖的物品:
Canon EOS-5D Mark II Digital SLR Camera bundle
Canon EOS-5D Mark II Digital SLR Camera Body Kit - Canon EF 50mm f/1.8 II
Standard AutoFocus Lens - USA Warranty - SanDisk 16GB Extreme Compact Flash
Memory card - Slinger Camera Bag - Additional LP-E6 Battery - FREE: Red
Giant Adorama Production Bundle for PC/Mac a $599.00 Retail Value
单张面值:
可接受价格(必须明码标价！):
2200
物品新旧要求:
new，sealed
邮寄方式要求:
YL
买卖双方谁承担邮寄损失(Required if not code only):
before me after you
付款方式说明:
BOA onl... 阅读全帖 |
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a****a
发帖数: 363 | 31 Canon EF 50mm f/1.4 USM Standard AutoFocus Lens $315
Canon EF-S 55-250mm f/4-5.6 IS II IS Lens $142
brand new
drop from OR |
|
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d********f
发帖数: 8289 | 33 【 以下文字转载自 PhotoGear 讨论区 】
发信人: ddyourself (dd), 信区: PhotoGear
标 题: [FS] Canon EF 70-300mm f/4-5.6 IS USM USA
发信站: BBS 未名空间站 (Sat Apr 5 00:34:27 2014, 美东)
器材名称
Canon EF 70-300mm f/4-5.6 IS USM USA
付款方式（需要其他付款方式请联系卖家）
non-cc pp, boa
卖家联系方式
bbs mail
器材具体描述、价格、运费：
（均为现金/BOA/check/MO或non-cc paypal价，+$5 for echeck）
（其他付款方式引起的价格变动请与卖家联系）
Canon EF 70-300mm f/4-5.6 IS USM Autofocus Telephoto Zoom Lens
brand new, never used.
USA model, USA warranty
$320 + YL |
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x*********h
发帖数: 2223 | 34 我想要的物品:
Tokina 11-16mm f/2.8 AT-X 116 Pro DX Autofocus Lens for Nikon DX-Format
DSLRs
单张面值:
可接受的价格(必须明码标价！):
$490 or tell me your price
物品新旧要求:
New & Sealed
or secondary with your price
邮寄方式要求:
ML
买卖双方谁承担邮寄损失(Required if not code only):
Before you, after me.
付款方式说明:
BOA transfer
其他补充说明:
广告的有效期:
till got.
物品来源:
Legally
我的联系方式:
PM |
|
|
j*******n
发帖数: 2205 | 36 your label
pm thanks
The Canon EOS Rebel T5 finds favor with experienced and novice photographers
alike. Perfect for those family get-togethers and other special occasions,
this camera can capture images and videos in absolute clarity. It has a
sturdy make and easy-to-hold body. The camera is equipped with an 18 MP CMOS
sensor along with a DIGIC 4 image processor. This camera's 3 inch LCD
screen lets you share all your favourite memories with others, and it also
has an HDMI port. You can get cr... 阅读全帖 |
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S**O
发帖数: 261 | 37 【 以下文字转载自 PhotoGear 讨论区 】
发信人: SERO (SERO_REF), 信区: PhotoGear
标 题: Canon T5
关键字: Canon T5
发信站: BBS 未名空间站 (Tue Dec 2 22:38:51 2014, 美东)
您怎么看? 初学者使用. 与SONY A6000比, 值得不？
有没有其他的 deal 推荐?
$349 + free shipping, no tax.
Includes:
Canon EOS Rebel T5 DSLR Camera with EF-S 18-55mm f/3.5-5.6 IS II Lens
Canon EF 75-300mm F/4-5.6 III Autofocus Telephoto Zoom Lens
Canon PIXMA PRO-100 Professional Photo Inkjet Printer
Canon SG-201 Photo Paper Plus Semi-Gloss, 13x19", 50 Sheets
Lexar 32GB Class 10, 200x Plati... 阅读全帖 |
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s*i
发帖数: 1402 | 38 pentax 也是日货啊,呵呵,搞摄影的居然连这个也没搞明白?
pentax的相机一个大缺点就是autofocus比nikon和canon慢,这点很烦人 |
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w*****t
发帖数: 80 | 39 D3000,我就没去了解过，我尼康D70还不错，升级到D90 的时候，手气不好，选了个坏
机子，用了一年就瘫痪了，正好一年过了维修期，再修不合算，然后买了PENTAX，看了
一下K-X和K-7的参数，觉得K-X基本参数都已经完全满足初学者了.看了几个摄影论坛，
都说他不错，至于楼上说的autofocus比nikon和canon慢，我暂时没感觉。 |
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l*****e
发帖数: 8596 | 40 很多单反可以当傻瓜机用，可以自动拍照片你只需要按一个button。但是要是会玩相机
，你会觉得单反要好得多。主要是因为单反的镜头都比较大，大光圈，允许更高的快门
速度，而且单反一般都可以有很高的iso，这些都有利于快速清晰的拍摄运动的物体。
我自己的经验，娃的表情瞬息万变，小胳膊小腿挥得很快，我也只有用我的单反才能拍
出来娃瞬息即逝的笑容，清晰地捕捉它的某个动作。用我的傻瓜，由于要autofocus，
总是错过最好的时机，并且娃挥动的胳膊总是留下一道模糊的影子。 |
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y******4
发帖数: 1404 | 41 ZTE Concord II:
4G Connectivity
Android 4.3 Jelly Bean
1.2 GHz dual-core processor
4.0 inch touch screen
1820 mAh battery capacity
5 MP camera with autofocus
Up to 1.3 GB of internal memory
Up to 32 GB of external memory
Up to 6 hours of talk time
Up to 250 hours of standby time
Mobile Hotspot-capable
Bluetooth Connectivity
HTML browser
Slate
Gorilla glass |
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c****0
发帖数: 784 | 42 价格还是50。感觉最大进步就是照相机autofocus了。
上次搞的一代还不错，能够最近流行的tmo神卡合用。 |
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b*******9
发帖数: 13548 | 43 不支持呗
你操作系统太老了
而且它需要可以autofocus的摄像头 |
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x****n
发帖数: 50 | 44 谁知道哪里有Telephoto EF 135mm f/2.0L USM Autofocus Lens的deal
thanks! |
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k********n
发帖数: 18523 | 45 http://insidewateen.blogspot.com/2011/01/nokia-n9-release-date-
april.html
Mobile World Congress takes place 14th-18th February, but the rumour mill is
already well and truly spinning. Nokia will choose the event to officially
launch its much-anticipated N9, with a release pencilled in for April.
If you remember previous coverage on the N9, you’ll know that it’s a 1.
2GHz
smartphone with more than a whiff of MacBook Air about its aesthetic. The
handset will be the first to run on Nokia and Intel... 阅读全帖 |
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f****y
发帖数: 227 | 46 两年前买的，照了8500 张， 设计能力是可以拍150,000张。也就是说，只用了设计能
力的5.7%。
外观完好无损。要价$1,250。
包括：EOS 7D SLR Camera Body (Made in Japan)
EF 28-135mm IS USM Autofocus Len
LP-E6 Canon Lithium-Ion Battery Pack(7.2V, 1800mmAh)
LC-E6 Battery Charger,
IFC-200 USB interface Cable
Body cap and Eyecup Eg
Instruction Manual
Software CD
E-72 mm Snap on Lens Cap
Len dust cap
附送：Hoya HMC UV ($55),
plastic hood ($10),
Sunpak 72mm Circular Polarized Filter ($36)
关于相机的性能和评价，有兴趣的买家可以自己上... 阅读全帖 |
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J******h
发帖数: 6102 | 47 据说是用F2.8 x3的变焦，另外nex-5每秒七张的速度有没有中间autofocus? 如果没有
的话，在
这种冲刺时用burst mode 5每秒七张也没什么意义。 |
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a***a
发帖数: 40617 | 48 我敢说，你家ld如果看了a55 autofocus video的片子，肯定要买 |
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j*********6
发帖数: 272 | 49 我有几个半幅镜头要出掉，感兴趣的站内联系：
1. Sigma 18-250mm f/3.5-6.3 DC OS HSM Autofocus Zoom Lens For Nikon ：今年8
月中在BHphoto买的，用过2，3次。like new condition，包含一切原包装里的东西，
lens
caps, lens bag, box, warranty card。并且附送三个filter(Ultra Violet (UV),
Circular Polarizer (CPL), and a Fluorescent (FLD) Filter)。Ask for $410.
这个是BH的链接：http://www.bhphotovideo.com/c/product/609112-
REG/Sigma_880_306_18_250mm_f_3_5.html
2. Nikon 35mm f/1.8G AF-S DX Lens for Nikon: 全新的US model,前几天打折时在
Amazon上买的，原价把它出掉（今天跟我联系，不然我就退掉了） Ask for $180
http:... 阅读全帖 |
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