split focus

Started 2 weeks ago | Discussions thread
petrochemist Senior Member • Posts: 1,520
Re: split focus

glassmandavo wrote:

Spiratone sold an inexpensive adapter in the 70's, that was essentially a bifocal add-on for your lens. It had a semicircular element in the lower half of the housing that screwed into your lens' filter ring (or slipped over the outside, I can't remember exactly now). The effect was near focus in the foreground, infinity or distance focus in the upper half.

Check on Ebay.

I think those sort of split focus diopters were made by just about everyone. I think mine is a Pentax version, but I've also seen them in a Cokin catalogue, and models from quite a range of other manufacturers listed on the bay. The OPs post seems to be talking about something different however.

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