[ricky3880]

Recently I want to swap my DC. Some of my friends recommend the above three DC to me. Due to my knowleadge was quite little. I want to heard the opinion from all big brothers in this forum for a comparison to the above DC.

My request is: A DC have 500 megapixels, some manual function,
as I need to take some photo for my new born son. Thanks a lot.

[ricky3880]

Sorry, the first DC is Canon A520 , typo mistake.

[Billy仔]

聽講Optio SV D相唔係好掂,我覺得唔使考慮佢\n其餘兩部,我覺得F810好D,16:9夠特別,D相都幾好

[ricky3880]

Billy,

I also heard about the bad comment on Optio SV. But the body size definitely attract me. But I think the performance should be the first priority to choose for a DV.

So if I only focus on F810 & A520. Anyone have any other comment.

Thanks a lot.

[mk07]

Hi all
i agree!I also heard about the bad comment on Optio SV.if i choice A520 lou.

[zeusho]

dpreview推出了Canon A520的Reviews：

http://www.dpreview.com/reviews/CanonA510/page9.asp

Conclusion - Pros
Good resolution for a budget 3.2 megapixel camera
Bright, vivid - though natural - color
Good edge-to-edge sharpness
Useful new 35-140mm equiv. 4x zoom lens
Reliable focus and exposure
Lots of manual controls
Excellent build quality for a budget camera
Very little purple fringing
Excellent flash exposures and color
Good screen
Excellent battery life from 2x NiMH batteries
Zoom-linked flash
Usable manual focus
Playback histogram
Excellent value for money
Conclusion - Cons
Images need sharpening
Focus can be slow - especially at the long end of the zoom
Flash recycle way too slow
Minimum two-second shot-to-shot time
Slow start-up
Overall Conclusion
Everything we said about the PowerShot A520 applies equally to the A510; it would be hard to find a more suitable first digital camera for the novice digital photographer on a budget. No matter what the situation, the A510 turns out perfectly exposed and focused results shot after shot. And the fact that as well as idiot-proof 'point and shoot' modes and scene modes you get a full array of manual options means it's a camera that you can grow with as your skills develop.

The build quality is excellent, the results - though probably a little 'over-processed' for purists (and almost all are in need of a little sharpening in post processing) are perfect for the target market; bright, colorful and contrasty. Our only serious complaints are to do with some aspects of the speed of operation - focus can struggle in low light at the long end of the zoom (sometimes taking up to two seconds to find its mark), the shot-to-shot time (when not in burst mode) feels very slow if you're trying to grab shots quickly, and the flash recycle time is frankly unacceptable.

Compared to the A520, the PowerShot A510 has the advantage of price (it's around $100 cheaper), slightly faster playback and burst mode and lower noise (though you'll only really see the difference shooting at ISO 400). It manages to capture nearly - though not quite - as much detail (maybe 10 or 15% less), and has all the positive qualities of its big brother; superb metal-bodied build, sophisticated features and excellent battery life. If you are unlikely to print at sizes about about 5 x 7 inches (at which point the A520's extra resolution starts to show) and are looking for a well-specified first camera that won't break the bank, the PowerShot A510 is well worth a closer look.

[zeusho]

dcresource推出了Canon A520的Reviews：

http://www.dcresource.com/reviews/canon/powershot_a510_a520-review/index.shtml

In most respects, the Canon PowerShot A510 and A520 are nice upgrades to two of my favorite cameras from 2004. However, two things have changed for the worst (low light focusing and redeye). Even so, these two cameras are still arguably the best entry-level digital cameras on the market.

First, the good news. Despite being smaller than their predecessors, the A510 and A520 offer a bigger zoom lens. Where most cameras have 3X zoom lenses, the A-series models offer a 4X zoom. Not satisfied with that? The cameras support wide-angle, telephoto, and close-up conversion lenses. A new optional feature on these models is an external slave flash, which attaches to the side of the camera. For people who take a lot of flash shots, this may be worth the $100 price. While the A-series cameras offer a new "zoom flash" feature, that doesn't necessarily translate into better flash range. It does, however, focus the light on the subject while you're shooting at the telephoto end of the lens.

One thing I really liked about the old A-series cameras was the full manual controls, and the new models have them as well. While beginners will probably stick to automatic or scene modes at first, once you learn more about photography you'll appreciate having the manual controls too. In addition to manual exposure controls, the A510 and A520 also feature manual focus and white balance. Photo quality on the cameras is excellent, with smooth photos, accurate color/exposure, and low purple fringing and noise levels (except at ISO 200 or above). Camera performance is generally good (save for an issue mentioned below), but not spectacular. It would've been nice if Canon had put the DIGIC II chip into these models, but you can't have everything. One performance area in which the cameras did better than average was in terms of battery life: you can take 300 shots per charge using NiMH rechargeable batteries.

Now, the bad news. Two things have gotten worse since the A75/A85, and a few things haven't changed when they should've. Where the old models could focus well in low light, the new models cannot. I don't know why, but they just don't like to focus in dimly lit rooms, despite having an AF-assist lamp. You've got manual focus to back you up, but you shouldn't have to use it for some of the shots where the AF failed for me. Another disappointment is in terms of flash photos -- redeye is much worse than on the older models. Some of the features that aren't any better than the old models include the sluggish, time-limited movie mode, low light LCD visibility (it's okay, but could be better), and the lack of a histogram in record mode. Some rechargeable batteries would've been nice, as well.

In conclusion, I can highly recommend the A510 and A520 to most people. However, those who take a lot of photos in dim lighting (and by that I don't mean interior lighting, I mean darker than that) or fans of redeye-free photos may be frustrated with either of the two cameras. To be fair, most of the competition has the same problems, but since the old models didn't have these problems, I'm going to knock Canon for it. If the cameras seem like a good fit for you, then check'em out.

If you're trying to decide between the A510 and A520, note these tradeoffs. The A520 will let you make larger prints and gives you more flexibility when cropping your photos. However, images are slightly noisier, especially at high ISO sensitivities. Also, the frame rate in burst mode is slower than on the A510 since there are more pixels to deal with in each photo. Remember: more pixels does not mean better photo quality!

What I liked:

Excellent photo quality
4X optical zoom lens
Full manual controls, unusual for a camera in this price range
Compact body feels solid for the price
Support for optional conversion lenses, external flash, underwater case
Above average battery life
Plenty of scene modes
Nice software bundle
What I didn't care for:

Poor low light focusing, despite having an AF-assist lamp (worse than old models)
Redeye (worse than old models)
Movie mode still needs some work
Noisy images at ISO 200 and above
LCD doesn't "gain up" very much in low light
Including rechargeable batteries would've been a nice touch