Viewing a single comment thread. View all comments

Calcutec_1 t1_j4ci9th wrote

Reply to comment by ApiContraption in PsBattle: Long exposure wind turbines by C20H25N3Oh

Im confused, how do the shadows form in thin air?

13

bureau44 t1_j4cijc2 wrote

these are the shadows on the blades which are facing away from us

43

MaxFunkenstein t1_j4cm8iy wrote

It's a long exposure. That is where the blades pass through the shadow

20

greenmachine11235 t1_j4ck6q2 wrote

I think there must have been a light haze/fog during part of the exposure and the turbine poles cast a shadow on it creating the floating shadows and the shadow fades toward the ground cause the fog was less dense there so less to shadow.

−1

Engine_engineer t1_j4czohc wrote

No, it is the shadow/exposure caused on the blades surface.

16

Grogosh t1_j4dcv54 wrote

Except the blades are not flat, the long exposure shadow would not be that well defined.

−8

Shaggyninja t1_j4eefz3 wrote

Yeah they would be? The sun and tower is always in the same place.

Shadows don't become blurry if something is not flat.

10

Swallagoon t1_j4flch2 wrote

I’m not sure you understand how light works, friend.

1

Average_Cat_Lover t1_j4d5839 wrote

No fog, the blades are just long. Some wind turbines have blades that are ~80% of their height.

8

greenmachine11235 t1_j4dbce2 wrote

That does not explain the rectangle shadow at the top. If the top housing rotated it'd be white not shadow, shadow on mist explains the top and the fact that none of the shadows change geometry like a blade does.

−6

Average_Cat_Lover t1_j4e6guj wrote

The rectangle shadow is from the "box" that holds the blades. The shadow is from the main body, not from the pretty thin blades. Look at the farther turbines, some of them either did not rotate much or at least rotated in synchrony with each capture, so you can see their relative size and width.

7

[deleted] t1_j4ctina wrote

[deleted]

−6

NoRodent t1_j4dahq1 wrote

All you need is an ND filter (which is basically photographic equivalent of non-polarized sunglasses) that allows you to shoot long-exposures during the day without overexposing the sensor.

It looks unreal because just like any other long-exposure photo, you can't see such effect with the naked eye, and additionally, people are mostly only used to long-exposure photos taken after dark (where you don't need a darkening filter because there's not enough light already).

So while you can sort of argue that the photo is fake (but that's a very slippery slope because no photo perfectly captures reality, not to mention neither do our eyes and brains), it is absolutely possible to shoot this (both on film and digital cameras) without any post-processing.

6