What's really interesting is Entangle. https://entangle-photo.org/ It works with a lot of DSLRs, it doesn't require you to do any of these steps, and it captures the output. The only thing it doesn't do is then map that to an output for other applications to pick up. There is an open request for this, but it seems to be out of scope for the application. https://gitlab.com/entangle/entangle/-/issues/68 It... - Source: Hacker News / over 1 year ago

This. Go for tethered capture on a pair of old dSLRs and use something like an rPi or just bloody long cables to pull the images to an always-on linux box. Have a look at this to get started -- https://entangle-photo.org/ -- which works with many canon/nikon bodies. There are a few "lithium to power" hacks (e.g. "ONsite Relay A Camera Power System") but they are expensive and often many of the bodies can power... - Source: Hacker News / over 2 years ago

Entangle works well if you are on Linux (or would consider dual booting) https://entangle-photo.org/. Source: over 2 years ago

There is also JPEG View which is really fast and simple image viewer for windows https://github.com/sylikc/jpegview) It is very fast, specially noticeable on very large images. - Source: Hacker News / 2 months ago

JPEGView - lightweight image viewer for Windows. ShareX - screen capture tool with other nice features. Source: almost 2 years ago

JPEGView should be close enough to what you want. It's very light-weight. Source: almost 2 years ago

JPEGView is great, lightweight and opens stuff fast https://sourceforge.net/projects/jpegview/. Source: about 2 years ago

JPEGView - Lean and fast image viewer with minimal GUI. Source: about 2 years ago