Studio Flash setup question....

[MrKickalot]

I was just thinking for some stupid reason about the beginner studio setup I am building and have a question.... I have 1 Alien Bee 800, Sekonic L-358 and my DRebel..(hopefully soon to be a 20D). Lets say I have my light set up and take a reading right in front of my subject at say ISO100, Shutter 1/60th and f5.6. Does it matter how far away from the subject the camera is?? I would think that since there is a certain amount of time it takes the light to travel from the flash and bounce off the subject and to the camera but is that enough time to make a difference??

I guess having a day off work has gave me time to think about off the wall stuff... HAHA

Thanks,

[EXA1a]

No. Only the distance between light source and object/model matters, if there's no mist or fog inbetween.
Example: the moon is a sunlit object and far away from your camera. But you still use the same exposure as for any earth-based object.
--Jens--

[robertwgross]

Light travels at about 300 million meters per second, so you can assume its travel time to be instantaneous for anything here on the planet.

---Bob Gross---

[cmM]

Light travels at about 300 million meters per second--In space. In Earth's atmosphere, only 250... and it slows down to 225 when it goes through glass :lol:

[Ferdinand]

Until our earthly mechanical technology (not optoelectronic stuff) catches up with the speed of light, it won't matter too much :D

/pushes MrKickaLot back on the wall.