By
DIGICHombre
eBay Listing: http://www.ebay.com/itm/112426475899?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
Superb close focus lens filter / diopter. Size 72mm filter thread. Increases minimum focus distance in front of lens. Same result as a macro lens or macro extension tube. Purchased 2, selling 2. Both in excellent condition. No scratches or dings. Threads perfectly in tact.
These are the non-bayonet A9FB version, that come in 72mm filter size.
I sought this filter out specifically for shooting video on modified anamorphic lens adapters. Vintage anamorphic lenses typically are handicapped by close focus distances of over 1 meter or more. Stacking 1 or more close-up diopters on the end of your anamorphic can decrease this minimum focus distance. Stacking multiple diopters on top of one another will minimize this close-up focus distance even further, without noticeable distortion.
+1 lens filter equals roughly .8 meter minimum focus distance.
+2 lens filter equals roughly .5 meter minimum focus distance.
These are also wide & slim enough o they don't produce a dark vignette in the edge of the frame. I used step-up/step-down rings to mount to my lens.
*Be aware you won't be able to rack focus very far, or focus to infinity with this on. It is not a one size fits all solution.
I'm told these adapters replicate what a Tokina +.4 achromat diopter can do at much less the price.
Payment via PayPal only. Questions welcome.