This is a new, good quality, Ace brand plano-convex close up lens for macro photography.
To fit on a lens with a filter thread of 77mm.

Most close-up lenses are marked with a +d number in diopter units, the power of the lens. The diopter of a lens is defined as 1000/f, where f is the focal length of the lens measured in mm. Thus, a lens of 50mm has a diopter of +20 = 1000/50, and a +10 diopter close-up lens has a focal length of 100mm = 1000/100.

The focal length of this +10 diopter lens is 100mm, and the working distance the same.

The coverage of the image is about 22x30mm.

Each diopter represents approximately a 25% increase in the size an object is magnified. A four diopter lens would increase the size of an object by 100%.

A formula is Magnification = 1 + D/4 so magnification using a 10 diopter lens 1+10/4=1+ 2.5=3.5

Comes in a protective pouch.

Sending Multiple items together:

If you wish to buy more than one item, buy the item with the largest courier fee first. Then when you buy others, indicate Pick Up and the postage or courier fees won't be added. You can then pay by Pay Now (I would get immediate notification) or internet bank deposit. As soon as payment is confirmed I'll send all items together in the one courier bag.

A list of all items I have for sale on Trade Me, in alphabetical order, is here:
http://www.trademe.co.nz/members/listings.aspx?member=536987&
amp;sort_order=title_asc