exposure compensation

E
Posted By
Eyron
Aug 3, 2003
Views
450
Replies
7
Status
Closed
The camera is in manual mode and is a Fuji S2 Pro.
If I have a set shutter speed (ie sync at 1/125 sec) and the correct aperature reads say F9 .
I need the shutter speed to be 1/125 sec.
But I need a lower F stop to limit depth of field.
Will minus 3 stops of exposure control alow this and give me a 3 stop larger aperature?
Also what would my F stop be here?
Are there any drawback to use exposure compensation. ( ie noise etc.).

EEO

How to Improve Photoshop Performance

Learn how to optimize Photoshop for maximum speed, troubleshoot common issues, and keep your projects organized so that you can work faster than ever before!

D
Dave
Aug 3, 2003
If I understand you correctly, you say that you are fixing the F stop but that you have already fixed the shutter speed, and now you want to change the F stop to affect the depth of field. You would have to raise (higher number) the F stop to increase the depth of field, and visa versa. But since you have fixed the shutter speed, the exposure will not longer be correct. I believe this is a digital camera? If this camera gives you a RAW file output, then I think you can push or pull the picture +/- two stops (at least I can with my Canon). If you want to do more than that, I’m not sure. Also, if your camera does NOT give you a RAW file, then what you propose may not or will not work.

"Eyron" wrote in message
The camera is in manual mode and is a Fuji S2 Pro.
If I have a set shutter speed (ie sync at 1/125 sec) and the correct aperature reads say F9 .
I need the shutter speed to be 1/125 sec.
But I need a lower F stop to limit depth of field.
Will minus 3 stops of exposure control alow this and give me a 3 stop
larger
aperature?
Also what would my F stop be here?
Are there any drawback to use exposure compensation. ( ie noise etc.).

EEO

GM
Gordon Moat
Aug 3, 2003
Eyron wrote:

The camera is in manual mode and is a Fuji S2 Pro.
If I have a set shutter speed (ie sync at 1/125 sec) and the correct aperature reads say F9 .
I need the shutter speed to be 1/125 sec.
But I need a lower F stop to limit depth of field.
Will minus 3 stops of exposure control alow this and give me a 3 stop larger aperature?

Wrong way to do this, since your exposure will be way off.

Also what would my F stop be here?
Are there any drawback to use exposure compensation. ( ie noise etc.).

Improper exposure. You would be better off setting the ISO speed three stops different to force a larger aperture (smaller number). Your other option, if you cannot alter the ISO setting that far, would be to place a three stop ND filter over the front of the lens. The ND filter can get you exactly where you want to be, without changing the ISO setting. Those with film cameras reading this post can also do the same thing, and is one of the best reasons to own an ND filter.

Ciao!

Gordon Moat
Alliance Graphique Studio
<http://www.allgstudio.com>
D
Don
Aug 3, 2003
Try a ND filter, about 1.0. That will force the aperture to a larger setting at the specified shutter duration.

Don


Experience is what lets you recognize
a mistake when you make it again.

"Gordon Moat" wrote in message
Eyron wrote:

The camera is in manual mode and is a Fuji S2 Pro.
If I have a set shutter speed (ie sync at 1/125 sec) and the correct aperature reads say F9 .
I need the shutter speed to be 1/125 sec.
But I need a lower F stop to limit depth of field.
Will minus 3 stops of exposure control alow this and give me a 3 stop
larger
aperature?

Wrong way to do this, since your exposure will be way off.
Also what would my F stop be here?
Are there any drawback to use exposure compensation. ( ie noise etc.).

Improper exposure. You would be better off setting the ISO speed three
stops
different to force a larger aperture (smaller number). Your other option,
if
you cannot alter the ISO setting that far, would be to place a three stop
ND
filter over the front of the lens. The ND filter can get you exactly where
you
want to be, without changing the ISO setting. Those with film cameras
reading
this post can also do the same thing, and is one of the best reasons to
own an
ND filter.

Ciao!

Gordon Moat
Alliance Graphique Studio
<http://www.allgstudio.com>
GE
Gary Eickmeier
Aug 3, 2003
"Eyron" wrote in message
The camera is in manual mode and is a Fuji S2 Pro.
If I have a set shutter speed (ie sync at 1/125 sec) and the correct aperature reads say F9 .
I need the shutter speed to be 1/125 sec.
But I need a lower F stop to limit depth of field.
Will minus 3 stops of exposure control alow this and give me a 3 stop
larger
aperature?
Also what would my F stop be here?
Are there any drawback to use exposure compensation. ( ie noise etc.).

Why has this been posted twice in the same group?

Gary Eickmeier
D
Danny
Aug 4, 2003
"Gary Eickmeier" wrote in message
(snip)

Why has this been posted twice in the same group?

Gary Eickmeier

Uh.. he’s trying to get more "exposure" for his question? 😉

Danny
E
Eyron
Aug 5, 2003
Scattershot

I asked mult. groups.
I dont give a rats ass if you like it or not.
The exposure compensation does not work to achieve a larger aperature. I tried it.

I thanks anyone who read my question and tried to answer. One guy Gordon really read my question.
It was clear.

EEO

"Gary Eickmeier" wrote in message
"Danny" wrote in message

Uh.. he’s trying to get more "exposure" for his question? 😉

I sure hope he got his answer – he scattershot his question to 8 or 9 newsgroups. I lost count. And this is the type who will not ever respond again in his own thread, to let us know how it all worked out, or to thank any responders.

Gary Eickmeier

T
Tesselator
Aug 5, 2003
I totally agree Eyron! People like Gary Eickmeier
have nothing whatsoever to contribute so they spend
thier time poliecing the newsgroups. As if… But
you can at least tell this one was a butthead from
his name. There’s a few others out there like Tony
Spandero, and Mark M. etc. doing the same sh*t. I
guess some peoples’ lives are /just/ that dull.

Anyway Eyron, don’t worry about it. Crossposts if
relevant are acceptable and don’t cause anyone any
harm.

"Eyron" wrote in message
Maybe you might try to answer questions instead of asshole remarks. This is about photography not being a jackass.

EEO
"Eyron" wrote in message
Scattershot

I asked mult. groups.
I dont give a rats ass if you like it or not.
The exposure compensation does not work to achieve a larger aperature. I tried it.

I thanks anyone who read my question and tried to answer. One guy Gordon really read my question.
It was clear.

EEO

"Gary Eickmeier" wrote in message
"Danny" wrote in message

Uh.. he’s trying to get more "exposure" for his question? 😉

I sure hope he got his answer – he scattershot his question to 8 or 9 newsgroups. I lost count. And this is the type who will not ever respond again in his own thread, to let us know how it all worked out, or to
thank
any responders.

Gary Eickmeier

Master Retouching Hair

Learn how to rescue details, remove flyaways, add volume, and enhance the definition of hair in any photo. We break down every tool and technique in Photoshop to get picture-perfect hair, every time.

Related Discussion Topics

Nice and short text about related topics in discussion sections