Tag Archives: 40d


好久没去动物园了,星期日去外拍一天,照片整理中,先发一张预告。 主要器材Canon EOS 40D,Canon EF 70-200mm F4/L IS,Canon EF 50mm F1.8 [singlepic id=387 w=500 h= mode=web20 float=center]

Posted in 我的慵懒生活, 数码产品 | Tagged , , , | 1 Comment

【转载】Canon EOS 40D initial impressions

From http://rolandlim.wordpress.com/2007/08/29/canon-eos-40d-initial-impressions/


I have played with my new 40D for a few days now since I boughtit on Sunday, so it’s time to write about some of my initialimpression on this new camera.

1. The viewfinder view is bright and is much bigger than the20D/30D. Definitely a nice upgrade. It’s great to finally have ISOvisible in the viewfinder at all times.

2. The Canon 20D makes a really loud shutter/mirror noise. The40D is much quieter, the sound is very muted. If the 20D soundslike a gun, the 40D sounds like a 20D with a silencer on.

3. Autofocus seemed faster especially under low light situation.Probably because all the 9 focus points are now cross-type, all thefocus sensors are much more sensitive than on the Canon 20D/30D.Previously, on the 20D, the peripheral sensors hunt a lot under lowlight situation, sometimes it was almost impossible to lock on afocus. On the 40D now, the peripheral sensors all locked focusinstantly just like the centre focus point.

4. The 3″ LCD is positively a huge improvement over the tiny1.8″ LCD on the 20D. It is probably not such a big improvementover the 2.5″ LCD on the 30D though. Without comparing the highresolution 3″ LCD on Nikon D3 and D300, which I have not seen andare not on sale yet, I would just say the 3″ LCD on the 40D isbright and clear with good viewing angle.

5. The menu structure has changed a lot compared to the 20D/30D,but is easy to use nevertheless.

6. Liveview and autofocus with Liveview is easy to use, once youhave made the correct settings in the custom menu.

To switch between Liveview and normal shooting(provided you have enabled Liveview in the custom menu), all youneed to do is press the “SET” button and the mirror would beraised instantly and you’ll get a Liveview on the LCD.

For autofocus in Liveview, there is a smallrectangle in the LCD which is the focus area, you can move thisrectangle freely to the point where you want to focus with themulti-controller. To autofocus, press the AF ON button once and themirror will raise up for a second or so. To shoot, just press theshutter release button as usual and it will shoot instantly.

To get out of Liveview mode, all you need to dois to press the SET button again.

7. Image quality with the 40D is very similar to the 20D/30D. Athigh ISO setting of 1600, my impression is that, their noise levelare very similar. However, the 40D sensor has 2MP more photocellsthan the sensor in the 20D. So the size of the photocells in the40D sensor would be smaller than on the 20D. Theoretically, if allother things being equal, you would expect that the 40D will benoisier than the 20D at high ISO, but since they essentially showedthe same level of noise, Canon has actually improved the noiseprofile on the 40D.

Personally, I have never had any complaints with the high ISOperformance with the 20D, so I am happy with the high ISOperformance of the 40D also. Of course it would be nice if Canonwas able to achieve some major breakthrough in technology andachieve ultra low high ISO noise in the 40D, but my personal viewis that the 40D high ISO performance is already very good andcertainly good enough for the majority of user.

You can see some test shots at ISO 1600 and ISO 1600 comparisonwith 20D at the links below:-

Canon EOS 40D ISO1600 Test Shots

Canon 40D vs 20D ISO 1600 Comparison

Continue reading

Posted in 数码产品 | Tagged , , | 1 Comment

40D 今天上市了,陆续有人买到了

8.30 Update:
Continue reading

Posted in 数码产品 | Tagged , , | Leave a comment


Continue reading

Posted in 我的慵懒生活, 数码产品 | Tagged , , | Leave a comment


Continue reading

Posted in 数码产品 | Tagged , | Leave a comment



价格方面,加28-135 IS头,1499.99

注意,现在amazon上面30D+28-135 IS的价格是1287




Technical Details

Resolution: Approximately 10.1 million effective pixels (totalpixels: approximately 10.5 million)

Recording pixels: 3888 x 2592

Sensor type: CMOS sensor, with primary R-G-B filtration

Sensor size: 22.2 x 14.8 millimeters

Pixel size: 5.7 microns square

Lens focal length factor: 1.6x

Sensor dust removal: EOS Integrated Cleaning System; activeremoval of dust by vibrating front low-pass filter; automaticremoval of dust spots, in Canon Digital Photo Professional software(v. 3.1 or higher)

Maximum frames per second: 6.5 frames per second (fps) at fullresolution

Maximum number of frames / burst: JPEG: 75; RAW: 17

Shutter speeds: 30 seconds to 1/8000, plus Bulb (1/3 or 1/2-stepincrements)

Flash sync speed: Up to 1/250, with EX-series Speedlites

Anticipated shutter durability: 100,000 exposures, based onCanon test methods

Computer interface: USB 2.0 (Hi-speed)

Image recording storage media: CompactFlash (CF) cards (type Ior II, including Microdrives)

Card compatibility: “FAT32” compatible–OK for cards over2GB

Image format options: JPEG (choice of “Fine” or “Normal”compression); RAW (Canon .CR2 RAW file format); RAW + JPEG (anyJPEG file size available; JPEG file written as separate file)

Analog to digital conversion: 14 bits per channel (16,382separate tones from brightest to darkest, for each channel)

Resolution options: “Large”–3888 x 2592 (approximately 10.1million pixels); “Medium”–2816 x 1880 (approximately 5.3 millionpixels); “Small”–1936 x 1288 (approximately 2.5 millionpixels)

File numbering: sRGB color space: IMG_0001.JPG or IMG_0001.CR2;Adobe 1998 RGB color space: first character is always underscore(_)

Folders: Automatically created for image storage; new folder canbe user-created with “Manual Reset” function; folders cannot befreely selected on memory card by the photographer

Highlight tone priority: Expands tonal range of brighthighlights by about one stop; ISO range limited to 200 to 1600;activated by C.Fn II-3-1

Data verification: “Original Image Data” can be appended to eachimage via Custom Function IV-6-1; requires optional Canon OriginalData Security Kit OSK-E3 to check authenticity

Live View viewing options: Cameras LCD monitor; computermonitor, via USB; computer monitor, via wireless transmitterWFT-E3A

Manual focus: Viewed on LCD monitor, with option to magnifyfocus area 5x or 10x

Autofocus: Possible–C.Fn III-6-1 active, press AF On button;mirror drops down temporarily while AF On button is pressed,allowing AF to function

Silent mode Live View shoot: Mode 1: First shutter curtainremains open; shooting up to 6.5 fps possible; Mode 2: Quieteroption; 2nd shutter curtain doesnt close until users finger istaken off shutter button

Accessory wireless transmitter: Canon WFT-E3A (optional,dedicated wireless transmitter)

Attachment to camera: Attaches to base of camera; totallyintegrated with EOS 40Ds design

Wireless transfer methods: 802.11b or 802.11g; link speed:approximately 11 megabits/second (802.11b) or 54 megabits/second(802.11g)

Connection method: Infrastructure or Ad Hoc (802.11g functionsin Ad Hoc mode)

Maximum wireless distance: Approximately 490 feet (150 meters),if “receiver” has its own antenna (depends on environment)

Wireless channels: 11 (in North American market)

Ethernet (wired) transfer: Yes; Ethernet 100Base-TX (maximumdistance approximately 1,000 feet); link speed: approximately 100megabits/second

Transfer options: 1. FTP mode (images sent to folder on hostcomputer); 2. PTP mode (remote control of camera possible fromcomputer); 3. HTTP mode (view cameras files using web browser;remote firing of camera possible)

Security options: Encryption: WEP or TKIP/AES; authentication:open system, WPA-PSK, or WPA2-PSK

USB “host” capability: Plug compatible USB devices into WFT-E2A,for use with the EOS 40D; GPS devices (write GPS time, coordinates,and altitude info into each files EXIF info); external hard drive(connect compact external USB hard drive, and write files directlyfrom camera to the hard drive as if its an additional memorycard)

LCD monitor: 3.0-inch (diagonal) TFT color; approximately 100%coverage; approximately 230,000 pixels on monitor; approximately140 degrees viewing angle

LCD monitor brightness: Adjustable in 7 levels (via Menu)

Video-out: Yes (to standard TV monitor); NTSC or PAL, selectableon Menu

Number of AF points: Nine, all cross-type AF points

Center AF point: Unique hybrid cross-type AF point; worldsfirst high-precision AF point with both horizontal and verticalhigh-precision; additional standard precision, cross-type sensorsfor lenses from f2.8 to f5.6

AF point selection: 1. Manual AF point selection via 9-waymulti-controller on back of camera; 2. automatic AF pointselection

AF activation: Shutter button, or new AF On button at back ofcamera

AF modes: One-Shot AF (for stationary subjects); AI Servo AF(for tracking moving subjects); AI Focus AF (auto selection ofOne-Shot or AI Servo AF)

AF sensor: Entirely new Canon CMOS AF sensor

AF sensitivity range: EV -0.5 to 18 (at 73 degrees F / 23degrees C, ISO 100)

Shutter speeds: 30 seconds to 1/8000 second, plus Bulb (1/3 or1/2-step increments); x-sync at 1/250

ISO range: 100 to 1600, in 1/3-step or full-stop increments; ISOcan be expanded to 3200 via C.Fn I-3-1

Auto ISO: Can be set in any exposure mode, including P, Tv, Av,and M; ISO usually based at 400; typical auto range is 100to 800,depending on conditions; manual exposure mode: auto ISO fixed at400

Exposure modes: Manual, Aperture-priority (Av), Shutter-priority(Tv), Program AE

Full-auto modes: Green Zone, Portrait, Landscape, Close-up,Action, Night Portrait, Flash Off

Metering: 35-zone metering sensor; Evaluative metering (linkedto all AF points); Center-weighted metering; Partial metering; Spotmetering at center of picture (approximately 3.5% of picturearea)

Metering range: EV 0 to 20 (all patterns, at normaltemperatures)

Exposure compensation: Possible in P, Tv, Av, and A-DEP exposuremodes; +/- up to two stops, in 1/2 or 1/3-stop increments (viaQuick Control Dial)

Autoexposure bracketing: Possible in P, Tv, Av, M, and A-DEPexposure modes; +/- up to two stops, in 1/2 or 1/3-stopincrements

Compatible flashes: All Canon EX-series Speedlites, includingnew Speedlite 580EX II

Camera menu sets flash: Yes (580EX II only, as of August2007)

E-TTL II flash metering: Flash metering not linked to active AFpoint; distance from compatible EF lenses now used; entire meteringarea can be averaged using Custom Function 14-1

Modeling flash: 1-second burst of flash possible at 70Hz whendepth-of-field preview button is pressed (580EX/EX II, 550EX,420EX, MR-14EX, MT-24EX, and Speedlite transmitter only)

Wireless E-TTL: Fully compatible, including ratio setting oversix-stop range

Flash exposure compensation: Up to +/- 2 stops can be set oncamera body (can also be set on compatible Speedlites)

Built-in flash: Covers lenses as wide as 17mm (27mm equivalent);Guide Number 43 (feet)/13 (meters), ISO 100

Viewfinder focus screen: New interchangeable “Ef” seriesfocusing screens; standard screen: Ef-A–precision matte screenvery similar to EOS 30D; optional Ef-D screen–precision matte withgrid lines; optional Ef-S screen–Super precision matte (superiormanual focusing with fast lenses, f1.8 to f2.8)

Viewfinder display: Similar to EOS 30D; new: ISO is alwaysdisplayed; new: B/W shooting mode icon; new: maximum burstavailable now two digits

Dioptric adjustme
nt: User-set from -3.0 to +1.0 (range can beextended using optional Canon dioptric Lens E, plus rubber frameEb)

Mirror lock-up: Possible via Custom Function III-6-1

Eyepiece shutter: None (cover is provided on included strap)

Color space: Standard sRGB or Adobe 1998 RGB (separate settingon Menu)

White Balance: Auto; Pre-set (Daylight, Shade, Cloudy, Tungsten,Fluorescent, Flash); color temperature (set by user from 2500K to10,000K in 100K increments); custom (shoot white object or 18% graycard, base WB on that neutral object)

White Balance correction: Fine-tuning of overall color, in anywhite balance mode; amber?blue correction, in 9 steps;magenta?green correction, in 9 steps; set on graph on LCD monitor,using 9-way controller; both types of correction can becombined

White Balance bracketing: Three separate files written with asingle click of the shutter; can be varied in the amber?bluedirection, or the magenta?green direction; can be adjusted up to+/- 15 mireds (equivalent to 3 steps on the 9-step adjust scale);can be combined with standard auto exposure bracketing (9 fileswritten to CF card)

Continue reading

Posted in 数码产品 | Tagged , , | Leave a comment