[multiweb (Marc)]

Originally Posted by gregbradley

Thanks Marc. Where did you get it from?

Did it need an adapter to fit the lens?

Greg.

I got it from Peter Tan. Pentax Lenses come in 52/49mm. The baaders are all M48x.75 so you'll need a step up/down ring. There are stacks on eBay for $10-$20. You can also use them as aperture masks. Stops some lenses nicely without the annoying diffraction spikes.