Split Diopter Photography Filter

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Split diopters are a filter type that have existed for a long time, originally used in film making for some iconic shots that "cheat" depth of field, making it possible to focus on something that is close, and something far away at the same time and still have interesting blur between your two subjects.

For photographers and videographers a split diopter can offer more than that one niche usage. It can also add some beautiful blur and dazzling bokeh to half of your image. In my samples I've just walked around town taking shots of things I thought were interesting, but I can see this working really well in product and portrait photography, especially with how it reacts to different lighting situations.

• Screw-in filter available in 58mm, 67mm, 77mm, and 82mm sizes.
• Get a step up ring if you have a different sized front-thread on your lens.
• Take the filter off the lens and go handheld with a 77mm filter adapter.
• Make the filter magnetic using our handy adapters. Great for hot swapping between filters.
• Rotatable when fitted. Smoothly turn the filter to get the perfect angle for your subject.
• Comes with a padded pouch for safe storage.

Tips & General Usage

There is no wrong way to use creative filters. If you like the images you're producing that's all that matters.

• Keep moving your AF spot around to be on the opposite side of the lens from where you've got the glass side of the filter, because your camera is going to struggle with focusing through that.
• Usually with my creative filters I like to use them at wide apertures (f2.8 and wider), but the split diopter is a little different and it's worth playing around with different depths of field to see what works for a certain situation. In the sample images you'll find a image showing the same shutters of a café at f8 and f1.8 with the same edit in Lightroom. At f1.8 there's a fairly ethereal look to the blurred side of the lens but also a ghosting of the image which I think works really well with the strong shape of the circle. At f8 the left side is much more defined.
• In terms of bokeh, as you can see in the samples you can get some lovely out of focus spots of light in the right situation. There's also those really unusual spots which have a flat edge to them which are at the closest lights to the middle of the filter. If you don't want that flat edge, the only option is to move the lights slightly out of the frame so that they're away from the middle edge of the filter.

Be sure to tag @riguphoto on Instagram with your split images, I'd love to see how you're using the filter!

SPECIAL OFFER: Buy any 2 items from Rigu's prism photography range and save £4. Order 3 and save £8, 4 items gets you £12 off!

Order two items from the prism photography range and instantly save £4 on your order (discount applied automatically to your shopping basket). Order 3 and save £8, 4 and save £12, 5 items will save £16, and so on.

Sizing

This filter is currently available in 77mm and 82mm filter thread sizes. To make the filter compatible with another sized lens you will need a step up/down ring. Split Diopter filters work nicely with a step ring as the effect is largely the same across the whole surface. Please note that if you use a step down ring (your lens filter thread is bigger than the filter) you should expect to see vignetting on images that you may need to crop out in post-production.