autumn sunset
by david_c

Comment by KarenNfld:
Now here's a case where a centered composition works. Lovely.

autumn sunset
by david_c

Comment by Oded:
Beautiful
but I'm so sick of this kind of pictures

autumn sunset
by david_c

Comment by ucanoe:
Nice shot!

autumn sunset
by david_c

Comment by Citadel:
not really a fan of the borders you chose here. They take my eye away from the actual picture.

The_Man_V.jpg
by david_c

Comment by violinist123:

Originally posted by david_c: It's like they were the same guy, or something. :-)

Shhhh, shhhh, shhhhhhhhh.

The_Man_V.jpg
by david_c

Comment by david_c:
Fellas! WTF?!? My own little rant forum come to life.

GB, in fairness, I believe I have heard the "Tv=ambient control" maxim before. I was shooting full manual at 1/250 and playing with the Av/strobe output. Since the higher my Av value meant the darker my backdrop, I think that's what had me confusing myself.

v123 may be a dick, but he's a helpful dick and a dick with an eye for the image. In terms of actual Dv (dickishness Value), he's almost as bad as this guy that used to be around a while ago, routerguy666. It's like they were the same guy, or something.

:-)

The_Man_V.jpg
by david_c

Comment by violinist123:

Originally posted by geoffb: No, it doesn't only apply to an ambient-only situation. Why don't you go try it, as that seems to be the only way you'll be convinced. Set your camera and strobe up however you want; just make sure to have areas that are clearly ambient-lit and strobe-lit. Now, open or close the aperture 2 stops, while leaving everything else the same. You'll notice it affects EVERYTHING.

Yes, Geoffb, changing the aperture changes EVERYTHING as you say. EVERYTHING being the TOTAL EXPOSURE OF THE IMAGE which is THE SUM OF AMBIENT AND STROBE LIGHT. Changing the aperture does not and can not CHANGE THE AMOUNT OF AMBIENT LIGHT PRESENT IN THE OVERALL EXPOSURE. Only a progressively slower shutter speed will allow THE RATIO OF STROBE LIGHT TO AMBIENT LIGHT in the OVERALL EXPOSURE to increase in the favor of ambient light as the length of the exposure time is increased.

The_Man_V.jpg
by david_c

Comment by geoffb:

Originally posted by violinist123: Originally posted by geoffb: Aperture controls both ambient and flash. ISO controls both ambient and flash. Shutter speed controls only ambient. Although your statement that a slow shutter speed lets in more ambient is correct, your claim that aperture does not control ambient is completely wrong. Shoot an ambient-only shot at f/4 and then again at f/2.8 (same shutter speed and ISO), and tell me the ambient doesn't change. You're correct when talking about an ambient-only situation. Unfortunately, no one is talking about an ambient only situation, the discussion is about studio lighting and this image is a strobe lit shot. You've obviously confused controlling exposure and controlling the mixture of ambient and strobe light. The two are not the same, and the latter is both what I was referring to and what is referenced in the photographer's notes of this image.

No, it doesn't only apply to an ambient-only situation. Why don't you go try it, as that seems to be the only way you'll be convinced. Set your camera and strobe up however you want; just make sure to have areas that are clearly ambient-lit and strobe-lit. Now, open or close the aperture 2 stops, while leaving everything else the same. You'll notice it affects EVERYTHING.

Note, while you're at it, that the author of the article you linked to never claims that the aperture does not affect ambient light (which is your claim). He is simply ambiguous when he says it affects the flash exposure (choosing not to elaborate on its effect on ambient).

The_Man_V.jpg
by david_c

Comment by violinist123:

Originally posted by geoffb: Aperture controls both ambient and flash. ISO controls both ambient and flash. Shutter speed controls only ambient. Although your statement that a slow shutter speed lets in more ambient is correct, your claim that aperture does not control ambient is completely wrong. Shoot an ambient-only shot at f/4 and then again at f/2.8 (same shutter speed and ISO), and tell me the ambient doesn't change.

You're correct when talking about an ambient-only situation. Unfortunately, no one is talking about an ambient only situation, the discussion is about studio lighting and this image is a strobe lit shot. You've obviously confused controlling exposure and controlling the mixture of ambient and strobe light. The two are not the same, and the latter is both what I was referring to and what is referenced in the photographer's notes of this image.

The_Man_V.jpg
by david_c

Comment by geoffb:

Originally posted by violinist123: Just so you know, aperture doesn't control ambient light. Shutter speed does. Shooting below sync speed lets some ambient light into the exposure.

*sigh*

Unfortunately, that's not correct. Aperture controls both ambient and flash. ISO controls both ambient and flash. Shutter speed controls only ambient.

Although your statement that a slow shutter speed lets in more ambient is correct, your claim that aperture does not control ambient is completely wrong. Shoot an ambient-only shot at f/4 and then again at f/2.8 (same shutter speed and ISO), and tell me the ambient doesn't change.

EDIT BELOW

Originally posted by violinist123: You don't have a clue.

Congratulations on being a complete dick. What makes it funny is that you're still wrong about your claim. So, I can sit here and enjoy it.

Message edited by author 2008-10-25 23:57:57.