Phonecam IR-- no conversion necessary

[lonesome_dave]

Here's a video I shot a few months ago when I first got my Samsung Galaxy Z-Flip3 smartphone. I held up a 760nm cut-on filter over the lens and was surprised how well it turned out. I finally created a Vimeo account to post the occasional video here so this one is my first attempt.

 

I didn't make any adjustments to the camera settings, it automatically pops into night mode when the scene gets dark enough. I only edited the video to reduce the bitrate so the filesize would be better for online.

 

There is a prominent hotspot in the IR portion of the video. If you're wondering why the foreground grass looks dark in IR it's fake grass, some sort of vinyl plastic.

 

Here's a few stills taken at the same location recently using the same smartphone & filter. I monochromed them and reduced to 2000 pixels for posting here.

 

 

The last one was taken in the shade and could barely be handheld due to a slow exposure of 1/17 second. The quality isn't superb but remember these were taken with a lens smaller than the button on your shirt.

 

The gear.

 

The little 27mm filter is about the right size to allow a wide angle shot from the phonecam's tiny lens. 720 and 760nm filters worked best. 800nm was getting too dark for handheld shots.

 

The IR only works in bright daylight but the little filter makes a nice accessory for this smartphone.

[photoni]

a friend of mine tried his iPhone12 with my Hoya R72 (720 nm) the images were great

[Lou Jost]

A very welcome surprise!