zeusho
註冊: 2003-09-06
上載我的肖像
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 Re: 大家點睇新既700萬像相機 Post time: 9 月 4 日 |
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To i-Lens及schindler朋友：
你們有沒有看過DC Resource及其他網站的full Canon G6 Review呢？700萬像的相片完全沒有800萬的雜訊及紫邊問題，而且畫質直追DSLR，外國多個網站已經有相同的定論，可能你們沒有看過才作這些評論及估計？
DC Resource：
http://www.dcresource.com/reviews/canon/powershot_g6-review/index.shtml
The Canon PowerShot G6 is a very good choice for those who want a full-featured camera and photo quality that rivals (but does not equal) what you'd get from a digital SLR. While I was concerned about noise and purple fringing on this super high resolution 7.1 Megapixel camera, I was pleased to see very smooth images with very little noise. That smoothness does tend to soften things a, bit, but the camera does offer sharpness controls. Color and exposure were good, and purple fringing levels were low. The G6 has a refined body design and it was all for the better. There's a more substantial grip for your right hand, a larger LCD display, and the LCD info display finally has a backlight. Did I mention that the G6 is smaller and lighter than its predecessor? Oh, and you no longer have to look at the lens through the optical viewfinder like you did on the G3 and G5.
In terms of performance, the G6 is on par with the competition. It starts up fairly quickly and AF/shutter lag levels are low. The G6 has a full suite of manual controls, and I appreciate the two custom spots on the mode dial as well as the two custom white balance settings. The camera is also expandable, with support for several add-on lenses as well as external flashes. The camera's battery life has been improved dramatically thanks to a new, high power battery.
So what don't I like? For one, the G6's lens starts at 35 mm, which is a little more "tele" than some would like. Sure you can add the wide-angle conversion lens, but I'd rather not have to. Second, I found the LCD to be too dark to use in low light conditions -- thankfully there's still the optical viewfinder. Along those lines, the burst mode wasn't great for taking pictures of moving subjects, as the screen went blank between shots (and this is at the normal speed setting, too). I'm surprised that Canon still hasn't put a live histogram onto the camera, when virtually all the competition has done so for years. My last two gripes: USB 2.0 would've been nice, as would a higher frame rate and longer recording times in movie mode.
Overall, though, I like the G6 quite a bit. If you want a high resolution camera without the noise and purple fringing issues of the 8MP models, this may be the right choice. Those with G5's probably don't need to rush out and upgrade, unless they really need that extra resolution or like the G6's refined body design (I certainly do). The latest camera in Canon's G-series gets a thumbs up from this reviewer.
What I liked:
Excellent photo quality
Large, rotating LCD display
Full manual controls
Robust performance
AF-assist lamp
Supports conversion lenses of all types
Hot shoe for external flash
LCD info display
Excellent battery life for a camera of this size
Can save favorite settings to two spots on mode dial
RAW image format supported
Nice software bundle
What I didn't care for:
Some jaggies, softness in details in photos
Some redeye
Doors over battery/memory card slot still a bit flimsy
Lens starts at 35mm (when more and more cameras are 28mm)
No live histogram in record mode
LCD difficult to see in low light
Movie mode limited to 30 secs, 10 frames/sec at highest resolution
steves-digicams
http://www.steves-digicams.com/2004_reviews/g6.html
Building on the very successful PowerShot "G" series, the PowerShot G6 offers many of the features found on its predecessor the Powershot G5 and adds 7-megapixel resolution and increased performance. Its Auto and Program AE modes will allow beginners and less experienced users obtain high-quality photos, while the more experienced photo enthusiast's will have all the manual controls they could ever need.
We were very satisfied with the G6's ergonomics, the controls are well placed, logically labeled and highly functional. The issue of accidently hitting the white balance button we experienced with the G5 has been resolved. The 4-way selector has been moved down along the right side of the LCD. The G6 is not "pocket size," it's more substantial with a durable body, swiveling color LCD, a high-capacity battery, a beefier grip and 4x zoom lens. Lightweight cameras may be easy to carry but they're very susceptible to camera movement and that often relates to blurry pictures. But don't let its size and weight scare you off, I had no problems carrying it around all day taking samples. Its "vari-angle" 2.0-inch LCD works great. When shooting outdoors, I had no problem framing with it even with the bright Florida sun directly behind me. Indoors it "gains up" and I found it does not get very grainy. There's nothing more aggravating then trying to frame a portrait with a grainy LCD.
The G6's performance was impressive. From power up to first image captured measured approx. 3.5 seconds. Most of this time was required to extend the lens. The shutter lag (the time from depressing the shutter release to capturing your image) is an impressive 4/10 of a second including auto focus. This can be reduced to virtually nothing by half-depressing the shutter release and pre-focusing ahead of time. When using this method shutter lag was a mere 1/10 of a second. The shot to shot time is better than average at about 1.6 seconds without the use of the flash and 2.2 second with the flash. I continued to shoot as fast as possible and was able to capture 19 frames before "busy" was displayed on the LCD while the contents of the buffer was being processed. I was able to shoot another frame in about 1 second and to process the entire buffer (approx. 20 frames) required about 25 seconds.
The G6 has two continuous modes to choose from (Standard, High-speed.) Using the standard continuous capture mode, I was able to capture 14 frames in just under 11 seconds. High-speed continuous mode captured 11 frames in approx. 5.8 seconds. When in RAW mode the camera can capture 3 frames in about 5 seconds, it then takes about 10 seconds to process the buffer. The G6 (like most digicams) is optimized for processing JPEG images and has no TIFF mode, but with the RAW mode and Canon's robust "DIGIC" image processor there's really no need for TIFF. The average user will rarely - if ever - run into a full buffer that will delay shooting and if so, a couple of seconds isn't very long to wait. All of our tests were done using a Transcend 45x 1GB CompactFlash card, Large SuperFine quality, preview off, flash off, LCD on, and all other settings at default (unless otherwise noted.) Times may vary depending on lighting conditions, camera settings, media, etc.
The Remote Capture software is a feature that may not be frequently used, but will prove invaluable in the right circumstances. Remote Capture allows you to exercise complete control over a tripod-mounted G5 attached to a PC via USB cable. You can preview the image, zoom, adjust camera settings, and release the camera's shutter from your PC. The image is then immediately uploaded, making it available for editing and printing without removing the CF card or initiating a batch upload process. If you've ever had the need to take a series of portrait shots and offer prints to your subjects within minutes, you will love this application.
Canon has continued the use of its all-glass 4x optical zoom lens on the G6. It covers approx. 35-140mm (in 35mm equivalence) with a maximum aperture of F 2.0 (W) - F 3.0 (T). There is moderate barrel distortion at full wide angle, but virtually no pin cushioning at full telephoto -- all in all a very nice lens. It produced sharp results through out its range, and the zooming mechanism is smooth and fast. The 9-point autofocus system covers from 50cm (1.6 ft.) to infinity in normal mode, and the macro mode covers from 5cm (2.0 in.) to 50cm (1.6 ft.). In the Manual Focus mode, focus is set by the using the jog dial near the shutter release and a sliding bar graph with distance marks. The center of the LCD magnifies a portion of the image to better determine focus.
I was very pleased with the overall image quality, it's comparable to the output from more expensive dSLR cameras. Our samples were sharp, nicely saturated, properly exposed and the white balance was right on the money. Outdoors it captures well exposed images, and sky detail is beautiful. Indoor results were also very good. The flash has good range and when shooting portraits, it illuminates the subject evenly, and skin tones look very natural. There was very little noise in high/low contrast areas, even ISO 400 looked good. There is some noise in the picture, but when compared to some of the 8MP cameras from earlier this year (2004), it looks much better. See the photos on our Samples page. We captured a 13 sec. exposure at F8.0, and again saw very little noise. As with most Canons we have seen this year, the flash does an excellent job of "throttling down" during Macro photography, which helps ensure you do not over-expose the subject.
Bottom line - the PowerShot G6 is an excellent camera. Definitely one that I would recommend without hesitation. With great image quality, powerful features, and robust performance it's sure to please most every user. This is a camera that I am sure is going to be carried by enthusiasts and pros when they leave the bulky dSLR equipment behind. The 7-megapixel images yield more than enough resolution to make stunning 13x19-inch prints. With a street price of only $699, Canon has put together an awesome digital capture system here!
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