Customer Reviews 

Great OEM Replacement
2009-06-28I was a bit apprehensive as I've been burned by cheap Chinese crap in the past, but I have to admit, the product worked as advertised. I was in Europe for two weeks using the camera extensively and it was flawless.

Battery Review
2009-06-05I purchased this battery from a Amazon network supplier. The part number was identical. I received the battery only 4 days after I ordered it. I thought this was very fast service considering shipping was free. The part number and the wattage are the same as a Duracell Battery that was at Walmart. The battery at Walmart was $44. This battery works fine in my Canon SD1100 camera which is what I bought it for. A full battery charge last just as long as the battery that came with my camera. The camera also works great by the way.

Battery wasn't charged and won't charge!
2009-05-26This battery would not turn the camera on, so I charged it in the charger that came with the camera and it still won't turn the camera on. I would return it but I don't have the original packaging. Don't buy one!

Low Capacity
2009-05-07The battery I purchased does not hold very much charge. It lasts about 25% of the time for the "Canon" brand battery. It could be that I got unlucky, but I suspect that it just is a cheaply made battery with bad manufacturing tolerances.
ps: I do analysis of energy efficiency for consumer goods for a living, and have thought a lot about batteries.

Be aware of the "Best Value"
2009-05-07Lenmar DLC4L Lithium-ion Digital Camera/Camcorder Battery Equivalent to the Canon NB-4L Battery.
I ordered this battery so that I would always have a spare one.
Always beware of the "best value" (buy together today). It is not always the best value. I was charged $34.99 for the battery and $10.95 for shipping for a total of $45.94. Then I found the same battery, available for $19.95 with free shipping for prime customers. Definitely learned a big lesson with this purchase.
Electronics Articles 
Camera basics: shutter-speed, aperture and ISO
In this article, I’ll introduce you to the basic elements that you can use to control exposure in your shooting. If you have a digital SLR, there will be a way to set all of these controls on your camera, but since they differ between manufacturers and models, you’ll need to refer to your camera’s manual to find out exactly how to change them.
All cameras, whether an ancient film camera, or a more modern digital, work in pretty much the same way. Photographs are taken by letting light fall onto a light-sensitive medium, which records the image. Traditionally, this has been film, but more recently, it tends to be a digital sensor. The more light that falls onto the film or sensor, the lighter the image.
Put simply, a camera consists of a light-tight box that stores a light-sensitive device (either a film or a digital sensor), a lens that magnifies and focuses the image onto that light-sensitive device through a hole in the box (called the aperture) , and a shutter that opens ...
Finding the Right Digital Camera
By Dave Etchells
Finding the Right Digital Camera
The overall goal of the Imaging Resource website (www.imaging-resource.com) is to help people chose and use digital imaging technology as effectively as possible. As simple as they are to use, choosing the right digital camera involves a number of decisions. Key issues are computing platform, image quality, onboard image capacity, exposure versatility, feature set, and included software. In this article, we'll lead you step-by-step through some of the issues to consider in making a purchase decision, and at the same time, suggest some things to look for in the test images we've collected on our website.
We're interested in your feedback and experience! We invite you to elaborate on this article by leaving comments via the database link at the bottom of the page. You can also give feedback in our "Forum" discussion-group section.
Computing Platform
This is an obvious consideration but it is fast becoming less of an issue than it o ...