Anamorphic on a Budget – CineMorph Sigma 18-35mm f/1.8 ART

January 29, 2017

Thanks to Eddie at Vid-Atlantic, I got to try the CineMorph mod filter that fits the Sigma 18-35mm f/1.8 ART. The results are addictive, with wide angle, extreme close up anamorphic character. I love it!


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Tito Ferradans here for a two-part episode about the CineMorph filters. This one is about the Sigma 18-35mm version. I’ve been dying to test it since it first came out, but I wasn’t willing to buy a Sigma just for that. Eddie at Vid-Atlantic kindly sent me their Sigma and I’m having a blast with it. This thing is razor sharp at f/1.8 and I really like the feel of the footage – and now I want one of these damned Sigmas…

This CineMorph takes anamorfaking to the next level by quickly taking over a superb, fast, constant aperture, zoom lens: the Sigma 18-35mm f/1.8 ART. No crazy steps and taking stuff apart, installation is pretty simple, the price is cheap, and the results are outstanding.

The insert is a thin 3d-print in black plastic. It slots neatly into place and I didn’t even know you could reliably 3d-print something so thin! Be aware that if you pick a version with flares, you’ll have a line going across bokeh. Most people won’t notice it, but you’ll know it’s there.

It’s good to remember this thing is also compatible with other Sigma and Zeiss Distagon lenses in Canon EF mount and not other lenses because of the three screws at the back. I’ll get to that in a second.

CineMorph filters are always available! You can grab yours at Vid-Atlantic’s website. The basic option – just the oval – is $35, then $45 for neutral flares and $50 for tinted flares. The one I’m using here has neutral flares.

The rear CineMorph is very easy to install. You can find the steps at Vid-Atlantic’s website AND on a small leaflet that comes with the filter.

First, loosen these three screws on the back of the lens. Do not take them out!

Slide over the filter and rotate it to align.

Last, tighten the screws back into place. Do not overtighten.

As a safety warning, the folks at Vid-Atlantic inform that this rear filter might not be compatible with every single Speedbooster, adapter and attachment out there. For more detailed disclaimers, check their product page.

I was able to use it with the Metabones Smart Adapter from EF to E-mount without a hitch until the very last test, when it got caught up on the mount and tiny corner broke off. Make your own tests to certify if you’re clear or not! Eddie also said that if you experience problems, they’ll send you a replacement, and the filters are fragile so if something breaks, it’s the filter and not the expensive adapter or lens!

I should begin by saying that this is an APS-C lens, which doesn’t cover full frame. Other than that, there are no issues with vignetting, at any focal length. As you’re placing an obstruction in the light path, some of it is lost. Around one stop, to be accurate. The lens will now behave as f/2.8, even though the aperture is at f/1.8.

You also will want to rely on NDs rather than stopping the lens down, as you’ll start to get heavy vignetting on the corners past f/3.5 at 18mm.

It was so easy and straightforward to use this mod that now I regret I have to ship this Sigma back… If you have this lens, I highly recommend this attachment. It’s a great way to fake anamorphic bokeh and flares for wide shots with shallow depth of field – the hardest type to achieve when using adapters!

Stay tuned for the next episode which will cover all other versions of the CineMorph; these are the ones that go in front of your lens – or your mattebox! If I wasn’t clear enough I meant: SUBSCRIBE. NOW. I have a few other videos on anamorfaking and you can find them in this playlist. Lastly, this project needs support. Join me on Patreon for exclusive rewards, inside information and the power to vote on what comes next! Ferradans, out!