mathieustern

This Rare 75mm f/1.9 Cinema Projector Lens is the King of Swirly Bokeh

YouTuber Mathieu Stern is a weird lens expert, but even he didn't realize the gem he'd uncovered when someone sold him an old cinema projector lens for 2 Euros at a flea market. It turns out this rare 75mm f/1.9 lens produces some of the most intense swirly bokeh Stern has ever seen.

This $6 Flea Market Projector Lens is Surprisingly Great for Portraits

While browsing a flea market, photographer Mathieu Stern came across an old slide projector and managed to buy the Rollei 90mm f/2.4 MC lens mounted to it for just €5 (~$5.70). With a little bit of ingenuity and effort, Stern converted it into a camera lens and found that it's a terrific lens for shooting portraits.

How to Clean Your Camera Lens with Candle Soot

Camera lens cleaning pens use fine carbon particles to help cleanly remove smudges from your glass. Do you know what else has carbon particles? Soot. Here's a short 2.5-minute video in which photographer Mathieu Stern shows how you can use ordinary candle soot to get the same cleaning power as popular lens pens.

This $70 Old Projector Lens Captures Intense Swirly Bokeh

The Carl Zeiss Kipronar 120mm f/1.9 is a vintage cinema projector lens that was designed to beam images rather than capture photos, but you can mount it to modern cameras using adapters. Photographer Mathieu Stern created a homemade adapter after buying the lens for $70 and has been delighted by the "insane swirly bokeh" that the lens produces.

Using a 140-Year-Old Lens on a $15,000 RED Camera

How does a 140-year-old lens perform on a modern $15,000 cinema camera? Photographer and filmmaker Mathieu Stern wanted to find out, so he paired his ancient (by photography standards) lens with a 5K RED camera to see what would result.

7 Tips for Getting Natural Smiles in Photos

Getting someone to smile naturally on camera can sometimes be a difficult task. Here's a 2-minute video by photographer Mathieu Stern in which he shares 7 techniques for getting your subject to grin from ear to ear in seconds.

Using 3 Vintage Lenses to Shoot the Same Model

Photographer Mathieu Stern has been doing shootout comparisons showing how the same models look when captured through different vintage lenses. For this 5.5-minute video, Stern used the Konika Hexanon 28mm f/3.5, the Minolta 100mm f/2.5, and the Industar 50mm f/3.5.

Turn a Cheap Vintage Lens into a DIY Selective Focus Lens for $10

Lensbaby's creative selective focus lenses like the Composer Pro will run you around $400; even the relatively affordable Spark costs $90. If all of that sounds too expensive for your taste, you should definitely check out this hacked version Mathieu Stern created for just 30 bucks!