Originally Posted by slvoid
I have a light meter too and I tried a few months ago to compare different lights, it was next to useless. It doesn't measure reliably the quantity of light, let alone the quality.
A good way usually is to take a picture of a scene during the day, then one with a reference light, then lock it and take pictures of the other lights.
Can you explain this a little more? I have quite a few different types of lights. I guess a lot of forum members do. I have a good digital camera too. But I am not sure that I can do anything that is a good comparison. You probably remember the taillight pictures I took outside. That was taken with the camera on auto exposure. I assume auto exposure will just ruin a comparison.
But, what about an object at a certain distance, with a fixed exposure? Is this what you're getting at?
Of course if I compare 6 different lights to each other, you could see a relationship between all of my
lights, but that may have no comparison to another members photos.
edit post: The Lupine comparison photos.
http://www.lupine.de/en/lighttest/lighttest.html
I can compare led's to 2.4w 4AA lights, to halogens, to different HIDs etc. But I would like to do something that makes sense when you compare it to another forum member's photos with some kind of common settings or environment etc..I have access to outside places that are dark enough and long enough, maybe some others need to keep it inside like allgoo19 ?
Did you go to the Lupine comparison photos in the dark? They gave some information about camera settings and the distance etc. I was thinking I could try and copy that to start with.
Or something easy for others to duplicate, as much as possible? Maybe there is no accurate way to compare photos from one member to another, just compare lights at one location?