I own a DSLR and consider myself a photography enthusiast. I wanted a small compact camera with me when I don't want to lug around my DSLR + lenses and equipment. After a previous good experience with the Canon A720 IS, the new A590 IS seemed like a good choice. Since I'm an advanced photographer, I'll focus on the advanced features of this camera. The auto modes work as well as any other camera in its class, but the extensive manual features is what sets apart the Canon A series. What I like about the camera:

+ Compact, stylish. It's smaller than older A Powershots, and the dark grey color gives it a seriousness compared to the typical bright silver finish.

+ Image stabilization works very well, it allows me to take blur-free photos 2-3 stops below the recommended shutter speed, that means at 35-50mm f2.8 1/10 sec shots are CONSISTENTLY possible indoors without using flash.

+ Good image quality. Expected from Canon, but even better is adjustable contrast, saturation, and sharpness settings, along with the typical JPG compression and resolution sizes.

+ Fast and responsive. I was surprised how responsive this camera is even compared with my DSLR. Shutter lag is very low for a compact digicam, and when I pre-focus with manual focus, it's even faster.

+ Manual modes. Aperture priority and shutter priority are great, the M mode is even better than other A Powershots such as the A720 because now there's a light meter on the right side that adjusts live based on what the camera thinks is the optimal exposure setting. And you can adjust aperture/shutter speed and see how it affects the final exposure. Ideally a live histogram would be even better, but this is very handy.

+ Manual focus. Although the LCD resolution is not good enough, even with the point zoom option, manual focus helps in close-up work and pre-focusing for action or creative photography.

+ Manual flash modes. In addition to automatic flash. The manual flash allows me to adjust the flash power in 3 levels, and prevents a pre-flash. This last part is important for using a remote optical slave flash. I can basically take professional looking studio pictures with this camera with my external flash equipment.

+ Optical viewfinder. I don't use this much yet, but can come in handy in bright sunlight conditions, or when battery conservation is needed.

+ Battery performance seems improved over previous A powershots too. The official specs give it 220 shots on regular alkalines and 500 on rechargeable NiMHs. Good news is they use common AA batteries that you can buy anywhere instead of proprietary models with specific chargers.

Now the negatives. I hope Canon can improve these aspects in their future models.

- Slow flash recycle times. This is to be expected from a camera that takes AA batteries. Would be nice if the LCD didn't blank out after a full flash discharge. Not a big deal since I use an external flash anyway, and the camera's flash is manually set to medium output as trigger (so recharge is faster). I would not want to give up the AA battery convenience for a faster flash recycle time though.

- Higher resolution LCD. The 2.5" 115k resolution LCD is ok for framing and casual browsing, but higher resolution would be nice.

-Live histogram while shooting. This feature is available when reviewing a photo, but not live. Other manufacturers have implemented this, and Canon should also, especially since the unofficial CHDK software mod allows such a feature.

- Larger aperture would be nice. Such as f/2.0 (instead of f/2.6) at the wide end, and f/4.0 (instead of f/5.5) at the telephoto end. That way a lower (& less noisy) ISO can be used in dim conditions or when fast shutter speeds are needed to freeze action. All the electronics in the world can't replace a good large lens. Also allows more creative depth of field control.

- A wider wideangle would be nice, 28mm instead of 35mm (35mm equiv). I'd rather see a wider wideangle than a longer zoom.

- Video feature is not ideal. Optical zoom is not available during recording of video. And the more efficient MPEG4 compression is not used, so video files tend to be large. Also noticed at 640x480 resolution, the highest fps is now 20 instead of 30 from other A models. A definite step backwards.

- Noise at higher ISOs. This is due to the smaller sensor on compact cameras. But 8 MP is probably the most pixels that can be crammed into a small 1/2.5" sensor. I'd rather have a cleaner picture at 6-7 MP than a noisy 8 MP picture. And if in-camera noise reduction is used, I'd like to see an adjustable setting for how much is being applied.

- And if I were to be really critical: There's no indicator of what optical zoom level I'm at. Slight image noise is noticeable even at ISO 80 when I zoom in really close on a monitor view. When at the widest angle & aperture, there's slight barrel distortion and blurriness on the corners. Not many compact cameras can do better in terms of image quality, but I'm pointing them out here because even though this camera beats most of the competition, it still has room for improvement.

So overall it's a great camera for the price. Offering great image quality with the auto settings for the casual user, but also a powerful set of features for the more advanced photographer.

These PowerShot "A" cameras are Canon's attempt to deliver the quality and features of its more expensive PowerShot "G" and PowerShot Pro "S" lines (such as full zoom lenses) at a budget price. The results are pretty good. (How do I know? Because I've actually gotten to use all of these cameras. I earn my living at Walt Disney World writing a travel guide, and nearly every day guests ask me to take photos of them with their own cameras, which most often are Canon PowerShots.)

Here's my opinion of the top-selling "A" series cameras:

A580. This 2008 model is an A590IS (see below) without image stabilization and with semi-automatic instead of manual controls. I'd spend the extra bucks for the A590IS, because those two features can make quite a difference.

A650 IS. You can do a lot with this sweet little camera, though it may be more than you need. It has a flip-out LCD panel and the option of manual controls. The shots I've seen from this model look great. Keep your ISO under 800 and you won't get any noise.

A720 IS. This fully-loaded 2007 model has all the toys, including a 6x zoom (35mm film equivalent of 35-210mm), image stabilization, adjustable flash power and optional second-curtain flash. This last feature means you can make the flash fire at the end of a long exposure, instead of the beginning, so moving subjects streak into focus instead of out.

A470. This 2008 camera is great for kids or anyone just looking for a good basic camera. It includes Canon's face detection technology and has a zoom lens, 14 shooting modes and the ability to set exposure compensation, ISO and white balance manually. Plus it looks great, and is a good bargain.

Finally, the A590IS (the camera on this page) is a 2008 upgrade to an older model, the A570IS. The face detection system works a little better than the one on its predecessor, and the new model is slightly rounder and easier to grip. I personally like that it has automatic and manual controls, though I haven't seen anyone using the manual set yet. Overall this camera is a fine performer, a great bargain and I think the best buy of the bunch. I bought one for myself.

Pros:
The A590IS is the best point and shoot under $200 today (closer to $155 most places). I own an SD600 and my wife, friend, and father (all different people mind you!) own A570IS's. The A590IS is the new version of the A570IS, 2007's best selling camera. Generally, see the rave reviews of the A570IS if you want to know the major pros and cons (in summary: Image Stabilization is amazing, noise is limited, features of all there including manual controls [though no auto-bracketing which no other cameras at this price point have regardless], final picture quality is superior to all other brands at this price point and type, [i.e., point-and-shoot], good size). Rather, here I'll address the main improvements over the A570IS (which is about $30 cheaper):

(1) The A590IS has 8mp vs. 7mp on the A570IS (negligible difference)

(2) The A590IS is slightly faster between non-flash shots BUT slightly SLOWER before the first shot can be taken and slower between shots where flash is used (less than .5 second difference according to CNet)

(3) It's charcoal/gray - minor change from silver, but I like it a lot.

(4) It's "rounder" on the edges but no less stable in your hand, neither camera is too slippery like other overly polished cameras (also, no finger smudges as a result).

(5) There is sometimes increased noise with higher MP cameras, this is NOT the case here - noise levels are similar.

(6) there are some minor additional shooting modes and improvements to other shooting

Cons:
The only change that is not an improvement is the lowering of the frames per second in the video mode.
A570IS: 640x480 = 30fps --- 320x240 = 60fps
A590IS: 640x480 = 20fps --- 320x240 = 30fps

Frankly, this is a bummer and cannon should correct it with firmware ASAP; however, the lower FPS is still quiet good, but this was a pointless change that is not appreciated -- the reality is that most people don't use video often and those who do will see a minimal difference ... if you're paying that much attention to the video you may be more interested in a different camera or a video camera.

Conclusion:
This will be the best selling camera of 2008 and it's a VERY safe purchase you won't regret (unless it gives you such a new found love for photography that suddenly you wish you had a Canon S5 or G7 ... which are more than twice as expensive!).

There are already great reviews out about Canon's A590is. I'd like to add that I bought this camera just before a 2-week trip to China. Well, it performed like a charm and I couldn't be more happy with my purchase, especially for such an affordable camera that has so many features. On the second day of my trip I was fumbling with the camera and dropped it from a height of 4 feet onto concrete. My heart was in my throat. Everyone stared. For the remainder of the trip the camera was just fine; not even a crack or scratch. I'm amazed. And because I had almost no time to look through the camera manual before I started taking photos, I'll add that this camera is very user-friendly and easy to figure out right out of the box. I especially like the image stabilization and video capture features. I was also pleasantly surprised by the long battery life. I took about 700 pictures on one set of batteries. Overall, a great camera.

The A590IS, based on price, is considered to be a budget or entry level camera. However, especially at this price point, it is feature rich including many not found in more expensive models. The feature set will appeal to a wide variety of people from those who want nothing more than an auto-focus point-and-shoot to the camera buff who wants a full set of manual controls, including manual focus, and to everyone in between. I was especially pleased that Canon included a viewfinder on this model, something that is being dropped from many product lines in favor of only an LCD screen. Anyone who has ever tried to compose a shot in bright sunlight only to find the LCD screen washed out or impossible to see will appreciate this feature.

I applaud Canon for developing a small camera with more attention to function rather than to style and minimal size. Many cameras can be found with dimensions smaller than a playing card or credit card but lack even basic controls, much less easy to use buttons. While the A590IS may not fit in the pocket of your jeans, it will fit into a jacket pocket or a moderately sized shirt pocket. Rather than being a flat or rounded rectangle this camera design feels good in your hand and feels secure during use.

Performance and picture quality was another pleasant surprise at this price point. Picture noise is not noticeable until ISO 400 and degrades rapidly at ISO 800 and above. Translated to laymen's terms, this means your shots will be crystal clear unless you specifically set the ISO to a high number for non-flash, low-light shots. Image stabilization is excellent throughout the three settings (off is also selectable). There are three auto-focus modes plus off including face detect which will automatically detect up to 9 faces in a shot and adjust the camera settings automatically so that faces are correctly exposed in your shot. Unless one of your subjects is moving fast, the camera detects the movement and adjusts according. The 4X optical zoom is a rarity in this price range with most not exceeding 3X. Combined with the 4X digital zoom you have a camera that is capable of mild wide angle to moderate telephoto. Color rendition is excellent and I have read a number of technical reviews that place it as nearly perfect. One of your many shooting options is "vivid" which increases contrast and heightens the colors in your shot. The camera's ability to shoot movies with sound is better than expected. However Canon did reduce the performance from the A590's predecessor to only 20 fps in 640x480. To get 30 fps you must drop down to the 320x240 size. Unlike my old digital, you can continue to shoot in movie mode until your memory card is full, not in shorter segments. Redeye reduction is accomplished with two methods which can be combined or shut off entirely, a redeye light and digital correction. Unfortunately, no camera manufacturer I am away of offers something that will work with pets so their eyes will often come out glowing green or gold in a flash shot.

Canon's decision to power the A590IS with AA batteries was sound. Avoiding a proprietary battery aided them in keeping the cost low. Replacement of a proprietary battery can cost upwards of $40. I would recommend purchasing a set of 2500 mAh NiMH rechargeable batteries and a good charger if you use your camera a lot. If you find your batteries dying and unable to plug in your charger, you can always pick up a set of AA batteries nearly anywhere. Battery life with the A590IS is reportedly one of the best with up to 450 shots. But if you are like I am and use all the bells and whistles as well as flash, expect battery life to be much lower, typical with any camera.

As with anything, there are always some cons. Writing to the memory card is a bit slow, especially in continuous shooting mode although still respectable for a camera in this class. I found that it did improve when I upgraded to a faster SD card (class 6+). As with all of Canon's A-series PowerShot cameras, flash recycle time leaves something to be desired approaching 5 seconds. Unless you are someone who wants to take rapid-fire shots using a flash, performance is acceptable. The LCD view screen is pretty low resolution and displays a lot of noise. Much to my relief the actual shots turn out much better than what you see on the view screen. When in movie mode with sound, I found that using the zoom or other buttons translates into an audible sound during playback.

In summary, I suppose it is possible to find a budget camera that will exceed the A590IS in one or two categories but the Canon has good, solid, balanced performance in all areas. I'd much prefer solid performance over stellar performance in one or two areas and below average performance everywhere else. It is by no means a high-performance SLR, but at $149 I can buy 10 of these before approaching what I paid for my SLR 10 years ago and I don't need to drag along 2 camera bags to take good quality shots. If I'd paid over $500 for the A590IS I'd probably rate it at 4 stars, but at $149 it earns a solid 5 stars for performance, features, and quality with the Pro's far outweighing the Con's.

A note about using SDHC (high capacity) memory cards. The a590IS comes with a regular 32mb SD card but can utilize the SDHC format. Make sure your computer (or other device) can utilize the SDHC format before buying a SDHC card as the format is not the same as an SD card. The SDHC is nearly idential in size and shape to the SD card which has led to some confusion. However, all is not lost. There are plenty of very inexpensive card readers out there that can read the SDHC format and upload to your computer or other device. SCHC cards are most often found in 4gb, 8gb, and 16gb capacities.

I bought the A590 as a camera to keep with me in the book bag/briefcase that I carry around most every weekday. You may recall the old saying that the camera you have with you (when you see a photo op) is your best camera. The A590 fills that role by virtue of its small size combined with full exposure control. The big problem is that the noise generated by putting 8 mpix on a tiny (1/2.5) sensor chip can overwhelm the image and render detail moot.

I use Imagenomic NoiseWare combined with Photoshop Elements to reduce noise and sharpen the image as best I can. If possible I shoot at the lowest ISO setting, 80, which lowers the noise. I never go over ISO 100 if I can help it, and usually at -2/3 on the exposure control. It's much better to have the photo-editing software brighten up the image than the amplifier boosting the signal (and noise) from the sensor. When you play back the image on the camera's LCD, it should look a little dark -- never overly bright (which can also blow out details).

Here are two other items about the Canon A-series cameras. My 15 year old son uses a Canon A720 for what are essentially snapshots and is very happy with it. If you don't crop substantially and aren't too picky about sharpness and noise, the camera is quite capable. From what I can tell, the A720 uses the same electronics (including the sensor and image stabilization) as the A590. The A720 has greater zoom capabilities (and hence a different lens system) and is a little bit larger and heavier. If I were going to get just one of these, I would go for the A720 because of the zoom.

The second point is that the other camera I frequently use is a Canon A650, and it is far more capable than either the A590 or A720. The A650 has 12 mpix on a larger sensor (1/1.7). Comparing sensor sizes (available at www.dpreview.com/learn/?/key=sensor+sizes) and mpix shows that the A650's sensor has 1.75 times the area as those of the A590 and A720 with only 1.5 times the pix -- hence pix density is lower and the noise generated by the A650 is much better controlled. And because there are more pix, the noise gets smoothed over as a result of more little points covering the same area in the image. (FYI: Greater pix density on a sensor chip creates more noise.)

I did a noise and sharpness test with all three of these cameras plus my Nikon D40 DSLR. I set two shoes, one black and one brown (the latter with lots of texture) on a rug, just beside a sunlit spot inside my house. The shoes were well lit but not in direct sun. I shot all of the cameras at 200 ISO (because that is as low as the Nikon would go) and f/5.6, with the exposure control at -2/3 of an f/stop.

The results surprised me. For whatever reason, and despite several tries, I could not get the Nikon to focus adequately on the shoes -- this from a distance of about four feet. I know from experience that the Nikon D40, with 6 mpix on a 2/3 sensor (2/3 the size of a standard 35mm film frame) has extremely well controlled noise and excellent sharpness, but the inability to focus here took it out of the comparison.

The superiority of the A650 to the A590 and A720 was startling. Keep in mind that I "zoomed" in on the images in Photoshop after I had transferred them to my 24" iMac (a great computer for photo editing). This made different sections of the shoes appear much larger (the laces were really telling), and the 12 mpix A650 (vs. 8 mpix of the others) had more pixes to work with for any particular area I looked at. Nonetheless, the other two cameras had so much noise that the details were overwhelmed and no amount of noise reduction and sharpening could change that. The A650's image was far sharper and clearer.

The A650 has one other big advantage so far as I'm concerned and one drawback. The advantage is the articulating LCD, which I find extremely useful for many shots. Yesterday, I had to lay down on the cold, damp ground to get a shot with the A590, but with the A650 I would have put the camera at foot level and looked down into the cocked LCD. That is really nice, almost addicting. However, the A650's drawback is that it's bulky and surprisingly heavy, which is why I don't carry it along all the time.

So you pay your money and take your choice -- or, like me, pay your money twice and have it both ways. Remember, the camera that you have with you is the best camera you own -- so think about what size and type of camera you want to carry plus when and how you will use it. For some people, that means owning more than one camera.

I have had this camera a little less than a month and have already taken 1200 pictures on it! 1089 of these were on on a trip to Alaska, while the rest were "practice" shots to become familiar with the camera. I am very impressed with the results as the beauty of our trip comes through perfectly in the photos.

I bought this camera as a backup to my aging Canon S2IS with its 12X zoom, just in case it decided to quit during the trip. The S2 survived and was used almost as much as the 590 - just the opposite of what I expected. The size and convenience of the larger LCD screen on the 590 quickly made it a favorite of mine, and my wife's. Because the Canon controls were very similar on both cameras, it was easy to learn, and switch between cameras. The newer Zoom Browser software is better than the S2's, but similar and was easy to learn.

I have not figured out how to disable the flash on the Auto setting, other than after I turn the camera on. The camera takes great shots inside with some light, and the flash washes some of these out, if used. I feel the default setting should be "Off" for the flash, even in the Auto setting, but can understand why it is "On". I just have to remember to turn the flash off whenever I turn the 590 on.

The only complaint I had of the 590 was the slowness of taking a picture. However, I discovered in my haste to get a new memory card before the trip, I had picked up an SD card, rather than an SDHC card. I feel the new SDHC card I ordered will solve that problem.

I used the Landscape setting for many shots of Mt. McKinley, Denali, glaciers, and others with great results.

Thanks to Amazon and the reviews submitted by other 590 owners, I am really enjoying this PowerShot and the unbelievable beauty of Alaska that it captured!

This camera is really nice. I like that you can add external lenses (sold seperately) to the camera. If you are interested in this option, check out the bundle package from 49 St. Photo (sold through Amazon) that includes two lenses and lots of other goodies for only $100 more.

My favorite features of this camera include manual mode (or shutter or aperature priorty), auto rotates pictures, long battery life, great movie quality w/ sound, can turn off digital zoom, has an easy mode, face detection is cool, and you can add an external lens.

Cons to the camera include a little bit bulky, slow recharge time after each picture, and that's about it. I never write reviews but I felt I needed to for this since I liked it so much.

The Canon 590 takes fantastic photos! I've had trouble in the past with shaky pictures from other digital cameras. But with the built-in image stabilizer, they are clear and beautiful, even up close! I've gotten some great shots. I can even take close up photos of books to show on computer monitor and the text is clear and readable. Love the movie mode, too. I like the ease of point and shoot, but if you want to change manual settings are available too.

This is an excellent camera for the money! It is small enough to carry in a pocket but still large enough to feel good and have a viewfinder so that you can turn the viewing screen off to save the battery. We have taken several hundred photographs so far and are still on the first set of batteries. The photos are excellent quality and the camera is easy to use but sophisticated enough to allow a wide variety of individual priority's such as aperture or timing. It also has the image stabilizer so that unfamiliar people can take photos without blurring them. I would buy it again without hesitation.