Also, concentrate on optical zoom, not digital zoom, which degrades image quality.

另外还要注意光学变焦，而不是数码变焦，数码变焦会降低画面质量。

youdao

It's just a pity that the handset is short on memory and doesn't have an optical zoom component.

这只是可惜的是，手机是对短期记忆和不具备光学变焦的组成部分。

youdao

Zoom optical systems have been widely used on all kinds of optical instruments, and more and more new design methods have been employed.

变焦距光学系统已经在各种光学仪器上获得了广泛的应用，一些新的设计思想也层出不穷。

youdao

Cosmetically, the biggest difference between the two is the powerful 10x optical zoom lens on the 330 HS, compared to a still-respectable 8x optic on the lower-end model.

ENGADGET

They're also making a lot of noise about how rare it is to have a 6x optical zoom lens on a camera of this size, which is sorta true.

ENGADGET: Panasonic's latest digicams: The Lumix DMC-FZ5, DMC-FZ4, DMC-LZ2, DMC-LZ1, and DMC-LS1

You're also getting a 2.5-inch LCD, VGA video at 30fps, and 16MB of onboard memory, plus, the few downsides here don't sound all that bad: below average life from the included rechargeable battery, only six steps on the optical zoom, and an Exposure Compensation setting that doesn't auto-reset are the only gripes this reviewer had.

ENGADGET: Fuji's six megapixel Finepix F470 reviewed