Hello underwater_nex7 - Welcome to the Sony Forums

You may wish to consider purchasing the A-Mount equivalent, the SAL100M28 lens:

http://store.sony.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=11035437

In order to use this with your NEX camera, you will also need an adapter:

http://store.sony.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&partNumber=LAEA1

Because of the costs involved, it may be wise to wait and see if an E-Mount version of the lens is released in the future. You could also investigate adapters that make other manufacturers' lenses 'E-Mount' compatible. Bear in mind that the links I have provided are the official Sony Store links - the same lenses and adapters may be available elsewhere within Switzerland at a more competitive price.

Thanks,

Simon

Hello

In terms of cost and simplicity you are probably right!

All I can suggest is keeping an eye on the official Sony site and the major photography news pages as they have a habit of getting a 'sniff' of these things before everyone else does

Thanks,

Simon

It would be good to hear back from the original poster, but I thought I'd point out that the main advantage of a long focal length for macro is that they allow you to move a little further away from very small subjects which would otherwise be difficult to light. They also defocus the background better than shorter focal lengths.

For underwater macro there is generally no problem with the amount of water over a long distance, as the distance between the lens and the subject is usually no more than several centimetres.

Cheers

Mick