Glenn FleishmanSenior Contributor, Macworld

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Glenn Fleishman is the author of dozens of books, including his newly released A Practical Guide to Networking, Privacy, and Security in iOS 10, a book that has information and step-by-step advice on connecting to and managing networks, and securing your data and your privacy. He's a senior contributor to Macworld, where he writes the Private I and Mac 911 columns and hosts the Macworld podcast, and contributes regularly to many periodicals.

CamKix Universal 5 in 1 Mobile Lens Kit

CamKix camera lenses review: A huge array of affordable iPhone lenses with quality tradeoffs

The lens maker has a bewildering number of choices, all of which have some obvious aberration.

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Photojojo Telephoto Phone Lens review: Magnetically-attached lens falls short

A $20 lens falls below a level of quality needed even for snapshots.

Z-Prime 2x Telephoto Lens.

Ztylus Z-Prime Lens Kit review: Wide-angle and telephoto iPhone lenses perform solidly for the price

These lenses are a good compromise of price and image quality.

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Photojojo Iris Phone Lens review: Decent lenses but attachment system is difficult to master

This iPhone lens system has snap, but lacks crackle or pop.

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ExoLens with Optics by Zeiss review: Superb lenses for iPhone photography

The price tag might deter some, but the lens quality is worth it for those who want the best iPhone system.

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Moment iPhone lenses review: Enhance your iPhone camera experience

An excellent intersection of capability, quality, cost, and enhancement.

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Focus On: Wide-angle iPhone camera lenses

Wide-angle iPhoto lenses let you sweep in nature and people in a single view.

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What to consider when shopping for an iPhone camera lens

Shopping for an iPhone camera lens? Here are a few things to consider.

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iPhone camera lenses: How we tested, lens categories, and lab notes

Get the lowdown on our testing methodology for iPhone camera lenses.

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How to fax from macOS Sierra

Apple dumped USB modem support for faxing, but still claims it exists.

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How to map a different key for Command and other modifiers

A reader uses a non-Mac keyboard and wants to set the right keys for extras.

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iCloud Keychain syncs accounts between macOS and iOS, but Firefox?

A reader wisely changed his Yahoo password on his Mac weeks ago, but wondered why it updated on his iOS devices, too.

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How to find a digital movie rental longer than 24 hours

Shop around and you might find a 48-hour or longer rental—and even pay less than for 24 hours.