Name the phenomenon...

Thoie

Was setting up to take some pictures of the moon last night, and fired a shot on auto while I was getting in place. The shake is explained by being handheld at 1/2 second, but what caused the green reflection? Is that coming from the shake as well ?

Fajitas!

Lens flare, would you believe - The moon is quite a bright object, reflectiing light from the sun, so you gotta expect some flare when shooting into it!

Thoie

*Tries to remember leaving cert physics*

Is there another name for the fact that it's a better reflection of the moon than the original pic is?

ThOnda

It is not "better", it is only with "better exposure". The original Moon is very overexposed, so you don't have any information in that area.

Burnt

The shot directly of the moon is over exposed. The reflection isn't as bright as it is attenuated each time it bounces off/pass through an element thus better exposed.


IIRC you can shoot the moon at about 1/125s at f5.6 on ISO100 to get a nice exposed image

oshead

You could try ISO 100, f16 @ 1/125 sec (Sunny 16 rule). This should get you close to the correct exposure on a clear night.

Dave OS

Sunny 16 rule?

oshead

You could use that as a starting point and take it from there.

lukeod

Sunny 16 Rule - Wikipedia seems to put it simply...

Thoie

Wow, I've managed to avoid ever hearing about the sunny16 rule (though had picked up a few similar, but far less convenient rules of thumb for the same thing). Wiki link for those, like me, who'd never come across that one before.

Thoie

lukeod wrote: »

Sunny 16 Rule - Wikipedia seems to put it simply...

Jinx, double jinx.

Interesting, thanks.

Thoie

Burnt wrote: »

IIRC you can shot the moon at about 1/125s at f5.6 on ISO100 to get a nice exposed image

As it happens, that's pretty close to what the actual shots (not the mistake above) were