#Peter St, I think I can recall the post you mention, but can’t find it either.
Here’s a few thoughts about zooming and candles I found on my travels.
When zooming out, there’s a change from the smallest possible size a candle that can be drawn, body/wick, to a line representing the range of the candles.
I’m using a 24″ 4k monitor which allows about 1200 candles to be display before this change, at full width of screen.
Changing to 1920 x 1080, this drops to about 550.
1366 x768 drops to about 400.
Multiple monitors can increase the number that can be displayed.
So depending on what device is being used, you can have different results.
Additional , the physical size of the display, is going to affect what visually your seeing.
Also the more bars you display, the range of max high/low value can, adjust the Y value scale.
Resulting in squashing the candle/lines.
So, if large number of candle are being displayed, its best to use full width of screen.
And the height, on the range of max high and low to offer a clear view.