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Hi, I'm Iljitsch van Beijnum. Here on iljitsch.com I publish articles and post links about a range of topics.

Also have a look at my business web site inet⁶ consult.

xkcd: The Best Camera

The Best Camera:

Permalink - posted 2022-07-13

My web tool for controlling (the color temperature of) Philips Hue lights

Last year I got a new webcam, which led me to ask myself what color temperature setting for my Hue lightbulbs would work best with that camera. (Turns out: 4000K.)

But: how do you set your Hue lights to a certain color temperature? I didn't find a good solution for that. So I built my own! And then feature creep kicked in and I ended up with a browser-based tool that can control the lights in various ways. Including having the bulbs change their brightness / color temperature gradually over the course of seconds or minutes or even an hour.

So it got a bit more complex than ideal, and you need to jump through a few hoops to get the name or IP address of the Hue bridge and an authentication key. But I promise it's really nice. It has sliders for easy operation on an iPad and the like, but you can also use the keyboard.

Check it out.

Note that the whole thing runs inside the browser and directly talks to the Hue bridge over the local network. So no information is sent to the server. The authentication key can be stored in the browser's password store where it should be safe from prying eyes. But be careful with what you enter in the bridge IP address field because the authentication key is sent to the system with that address or name.

The huge bridge used to create the name "philips-hue.local" for itself, but now they they create a .local name from their MAC address. For instance:

ndp -a 00178827894e.local 0:17:88:27:89:4e en0 23h59m47s S

Permalink - posted 2022-07-12

AppleTV (not always) 4K

The idea behind the AppleTV 4K streaming puck is that you see your content in 4K. In the case of photos in the screensaver, that's not what you get. The AppleTV 4K, showing photos from my laptop using "home sharing" (no not iCloud photos):

When I play a slide show with the same images on my LG OLED TV, I get this:

These are photos taken of the TV image, of course zoomed in quite a lot, but if you're sitting close enough to the TV to be able to tell the difference between HD and 4K, the difference is pretty obvious.

What gives, Apple?

Permalink - posted 2022-07-11

Is the world running out of film cameras?

The other day, the Youtube algorithm served me up this video: Film Photography's Future is its Past | Cameras and Coffee with David Hancock. In it, David Hancock more or less adopts the premise of this article: Film Photography Is at a Crossroads Headed for Extinction: What It Would Take to Turn It Around and Why It Won’t Happen by James Madison.

Is the world running out of film cameras? Is it feasible to create new ones?

Full article / permalink - posted 2022-07-08

Visiting my balcony

Image link - posted 2022-07-05 in

Scanning film negatives on the cheap

If you shoot (or shot) photos on film, you'll probably want to scan that film in some way to get those photos on your computer. There are various ways to get that done. For reasons that I'll talk about later, I decided to have a go at scanning negatives using my digital camera recently.

Read the article - posted 2022-07-03

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