SainSonic 3-In-1 lens Fish-eye/Wide Angle/Marco Zoom pour iphone4/4S (Rouge)

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Features:

• 3-in-1 Lens: Fisheye, Wide Angle and Macro
• Quality Multi-element, Coated, Glass Optics
• Works with all your favorite apps
• iPhone 4 Tested and Approved
• On-and-off the iPhone 4 & 4S in seconds
• Includes Microfiber Carrying Case and Lens Caps
• Easy to Use

Design and appearance

At first glance, the SainSonic 3 in 1 lens clip only appears to include two lenses, but unscrewing the wide-angle reveals the cleverly hidden macro. To use any of the built-in lenses, simply slide the clip onto your iPhone. The fit is quite snug, so you can rotate the phone, walk around, and even slip your phone into a bag without worrying about the lens slipping off. It's also easy to reposition -- to swap the wide-angle for the fisheye, for example, just flip the entire clip around so that the lens you want to use is facing forward. As with all sub-$100 optics, it doesn't have the sturdy, metal construction of, say, a $2,000 professional-class Canon L-series lens, but for a pocketable accessory with a potentially limited shelf life, we're more concerned with the device's performance than we are with how it feels in our hands. The plastic lens mount is also less likely to damage the glass body of your iPhone 4, so we don't mind that the clip itself isn't made of metal.
Though it's small enough to fit inside your front pants pocket, the lens still protrudes from the iPhone in a big way. The rather obnoxious product branding also makes it conspicuous, but that, at least, is removable (we chose to detach it for our product photos, and new SainSonics ship without the logo sticker). Even without the branding, it's an eye-catching device, prompting several locals to approach us with questions during our testing in New York City. One woman even asked us to demo the lens for her. As it happens, she tried out the fisheye lens, and was very impressed with the results.
The SainSonic ships with lens caps for both primary lenses, and a small carrying pouch that also doubles as a microfiber cleaning cloth. Because of its size, we found ourselves constantly touching and smudging up the lens accidentally, so that microfiber cloth will certainly come in handy. The device is available with either black or red barrels -- both constructed from anodized aircraft-grade aluminum. A ridged simulated filter mount surrounds the fisheye lens's front element, complimenting the lens aesthetically, though clearly not serving any functional purpose, as you won't be adding any filters to the SainSonic. The multi-element lenses are constructed of precision-ground glass, and that's clearly reflected in the image quality we were able to achieve here.

Ease of use

The 3 in 1 lens clip is incredibly easy to use. You don't need to install any software, though it's compatible with any and all iPhone apps. And mounting or swapping lenses just takes a second, as you can see in our hands-on video. We did have some trouble using one hand to remove the wide-angle lens to expose the macro, as we were using the other hand to hold the iPhone, though unscrewing the lens while it's mounted on the phone is less of a challenge. It's also important to note that because of the iPhone's higher multiplication factor in video mode, the wide-angle and fisheye lenses will present a completely different perspective when shooting video than they do when capturing stills. Don't be discouraged, however -- the video crop factor actually eliminates much of the distortion we experienced with the wide-angle lens (more on that below).

Image quality

Since the optic functions simply as an extension of the iPhone's existing lens, the quality of the images it captures are limited by the sensor itself. Fortunately, the iPhone 4's camera offers a huge improvement over its predecessor, enabling the SainSonic to capture some pretty fantastic photos. Pics we shot with all three lenses were sharp and vibrant, and were clearly distinctive from those captured with the iPhone's native lens. Most wide-angle lenses suffer from minor barrel distortion, but unfortunately we found distortion with the SainSonic's wide-angle lens to be far more noticeable than what we've experienced with a wide-angle lens on a DSLR. These distortion issues are clearly visible in our gallery of sample images. As with any fisheye lens, you'll notice some significant barrel distortion here, too, but that's to be expected -- after all, that stretching is kind of the whole point of fisheye photography.
We were perhaps most impressed with the macro lens, which essentially functions as a very powerful magnifying glass for your iPhone. We were able to capture incredible detail with this lens. In a photo we shot of our high-density notebook display, we could clearly make out individual red, green, and blue pixels. This capability alone is enough to justify the expense of adding the SainSonic, especially for anyone who enjoys macro photography but doesn't have the luxury of having a pro kit nearby at all times.