Waves:
The other day I bought an old 1000D as something I could let the kids (6 and 7) hold without me sweating bullets over them possibly dropping my preciousss. Today we finally had some none-shit weather, so we took it outside. Kids had fun, dad had fun, we even had some usable shots!
Not very ‘Christmassy’, but this was the view from the balcony – at least for a few minutes – then the clouds rolled in.
I like them both. I get dizzy looking at the 2nd one. 
speed please.
flawless! composition, color harmony. 
That’s a brilliant idea…nice dad move!
Reminds me of the Brassai’s work. Well done.
Sorry about the blurry shots, I was unable to get anything better with the little LX7.
The last event we attended during the advent period: the ‘floating of the lights’ (Lichterschwimmen)
It’s a tradition started in 1962, when 5th and 6th graders float small candles (900 of them, this year) down the Limmat. We were already on the river bank, when we found out that we know one of the organisers (the couple working as janitors for the school). 
The red rectangle in the background of the 3rd shot it the Märlitram, driven by Santa himself, with angels being the ticket inspectors.
After the event, we were offered free punch, listened to a small choir, and visited the Christmas market:
100 ISO, 1/250s, f/9,0, 70 mm, Godox flash V860III set to 1/8.
Thank you. Amazing you managed to get the wings almost still.
Or maybe I was thinking about the humming birds here, can’t get them at anything less than 1/2000.
The speed is determined by the flash duration. I have no reliable numbers, but the duration is supposed to be between 1/300s and 1/20000s depending on the power.
Yes. Of course, you used flash, I missed that. Great photo
must be great camera to be able to do a flash sync to 1/20000.
As I understand it, as long as the full sensor is exposed (not covered by the shutter) when the flash goes off (producing a short, intense burst of light), and conditions are quite dark (so the light from the flash, emitted during that short burst, will dominate over ambient light gathered over the longer total exposure time), the captured image will be free from motion blur. The camera does not need to have extremely fast flash sync.
Here’s an article, with some photos at the bottom, demonstrating how the shutter (if too fast) may block out light from the flash:
Yes, exactly. The flash sync was “normal” 1/250s. With f/9 and 1/250s the ambient light had nearly no influence.
Yes. I understood all that. I was merely surprised with 1/20000 speed or did I misread that and 1/20000 was just an assumption of flash.
Flashlights can’t vary their intensity, so to produce less light per flash they shorten the flash duration. 1/20000 is perhaps a bit exaggerated, but 1/10 000 s is certainly possible (that’s 100 µs, quite long for modern electronics).
And it’s the flash that determines the exposition in this case.
That’s also why speedlights recharge faster when they provide less light: only part of the high-voltage charge is used in the flash.
True. Analogous to a forced air gas heaters in US or gas stove. Flame is same and only thermostat keeps it on for longer period for higher temperature.
