The major difference being that using a standard lens will likely still require reading or prescription glasses (ongoing costs) whereas the upgrade may be able to eliminate eyeglasses altogether.
With the SL820, users have access to a 28mm wide angle lens, while the SL620 offers a standard 35mm lens.
ENGADGET: Samsung expands SL camera lineup: SL820, SL620, SL202 and SL30
The new lens kit includes a replacement lens cover, as well as adaptable rings for standard 37mm lens filters.
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Unlike a standard 35mm lens which is commonly found on compact digital cameras, the TL34HD's 28mm wide-angle lens gives consumers the ability to expand their creativity and take even more moving and emotional images.
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The 2x optical zoom is equivalent to a 32mm-64mm lens on a standard 35mm camera, and a 3x digital zoom will help the shutterbug zero in on faraway details.
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Unique to the AR0835 mobile sensor is pin-to-pin compatibility along with a shared lens and lens placement to accommodate standard modules with Aptina's 8MP AR0833.
ENGADGET: Aptina intros 8MP sensors that bring 60 fps, pro-grade video to phones, action cameras
In a demo room and my living room, this digital projector produced stunning results from HDTV and DVD, and surprisingly good pictures from standard TV, thanks to an excellent lens and advanced signal processing.
The Back-Up Camera is both dustproof and waterproof to IP67 standard, and features a wide-angle viewing lens that provides a 120-degree viewing area behind the vehicle.
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The new camera is completely redesigned with incredible optical performance, yet amazingly it's 25 percent smaller than the camera in iPhone 4S. The new iSight camera in iPhone 5 features a sapphire crystal lens cover that is thinner and more durable than standard glass with the ability to provide crystal clear images.
Just 12.2mm slim (measurement excludes lens cover), which is smaller than the thickness of a standard AA-size battery, the Cyber-shot TX55 is the world's thinnest camera in its class (among cameras with an optical anti-shake function).
Combining a standard camera view, with a second wider view, filmed with a "fish eye" lens, it has been used to film a short live action film called Broken, as well as the Kill Mode animation.
The light, compact 3x zoom lens covers a frequently-used range of focal lengths from wide-angle 18mm to standard 55mm (35mm camera equivalent range: 27-82.5mm).
ENGADGET: Sony NEX-3N and Alpha A58 unveiled, heading to Europe this spring
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