ZS40/TZ60 vs the competition

Started Feb 14, 2014 | Discussions thread
OP Ianperegian Veteran Member • Posts: 3,597
Re: Five Aspherical Elements

21st Hermit wrote:

Ianperegian wrote:

It is impressive how Panasonic has managed to make the ZS40 so compact. Apparently there is a lens element that slides sideways when the lens retracts.

That may be, but if you read the PhotoBlog specs, it shows 5 aspherical elements with 10 aspherical surfaces. Twas a day when one aspherical element was a big deal. The wonder of super computers and modern molded optics.

Apparently the ZS40 lens also has 3 ED (extra low dispersion) lens elements and one ultra high refractive index (UHR) lens element which also helps to reduce the length of the lens.

There’s quite an interesting article on the B&H site (here ) about the different types of glass components in modern lenses.

The control ring feature allows more internal depth to store all the nested zoom rings and elements. So less a feature and more a necessity.

Yes, the ring/lens housing is deeper (by 5mm) than on the ZS30 but the total “thickness” of the ZS40 is also significantly affected by the EVF at the back, which adds about a further 3.5mm. The main body of the ZS40 is only about 1mm thicker than that of the ZS30.

This is an image comparing the top vews of the ZS40 vs the ZS30:

At full sized viewing the image shows tha actual sizes of the cameras.


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