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Joined 2 years ago
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Cake day: June 13th, 2023

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  • Normally I would recommend a 50 or a little higher for portraits but if it’s going to be your only lens 35 isn’t a bad choice (on aps-c).

    The 85 or 100 might be nicer to use for macro not because of the 1:1 but because of the farther working distance. But they are going to be borderline useless for day to day portraits. For studio portraits maybe it would work but I definitely wouldn’t want it as my only lens.

    If you’re specifically worried about magnification on the 35, consider grabbing some extension tubes. They’re really cheap, and you don’t need an enormous set if you’re starting at 1:2.

    Part of me wants to say get the 24 macro and the 50 1.8 which is like the cheapest lens they make and would be a pretty good portrait lens, but wide macros are weird, and 35 is such a do everything length it’s hard to go wrong with it.


  • To be fair, if Lemmy’s discoverability wasn’t trash you could probably have both. I would love to have a bunch of small instances that were focused on individual topics, like Star Trek or anime or knitting or gardening or whatever and just jump between them. It feels like that’s what federation was built for.

    But because Lemmy is so small right now and discoverability is so bad it seems like almost every instance is either intentionally a tech / general purpose one or so adjacent it might as well be. As long as there’s just one community for that thing that people can find that would be great, but instead there are like 10 spread around 3 different instances and 8 of them are dead and 1 just bot reposts the subreddit - and it’s really hard to tell which is which. Like, if everything was actually on one instance at least you could just list everything.








  • The way I’ve been thinking about would be to have the “meta community” be a separate thing from each individual community. Each individual community would opt in to joining, and would retain their own moderation and users, but the posts would be sort of cross posted to the meta community. The meta community mods largely just deal with removing posts that don’t fit. All the comments go on the original instance of the post and are moderated there, so the meta community mods might be allowed to moderate those comments on an opt in basis.

    The idea is that it’s for very similar communities across different instances, but because it’s opt in there are probably other uses. The hope would be that each individual community could retain their vibe, while the meta community would have more of a firehose of content, and possibly filter some of those topics back down for more in depth discussion.

    I’d also love for individual users to be able to group communities for themselves, and for those to be shareable, which seems much quicker to implement.






  • aren’t you still limited by ambient air temp because the hot side of the Peltier needs to be cooled by air anyway?

    No, that’s why the baby fridge works. The peltier TEC in the fridge can produce temperatures below ambient, but generally not below freezing. Computer chip TEC coolers would go farther and push more power through the TEC and do things like water-cooling the hot side instead of a little fan.

    The reason they don’t get used anymore more complicated. It’s my understanding that basically TECs have a sort of limit on the amount of heat they can push from the cold side to the hot side, because moving more heat means more energy used and thus more waste heat. Apparently most modern chips are past that limit. IIRC, TECs can only move something like 100w of heat - past that and they start to heat themselves up because of waste heat. Modern chips can be like 300w.

    Sub ambient cooling also comes with a bunch of issues like condensation, so no one really uses it day to day. Also, chips are run so close to their limits now that cooling like that doesn’t get you nearly the performance difference it once did.