--- [EMAIL PROTECTED] wrote:
> Has anyone had much experience with the multiple
> exposure feature on the A2
> (EOS 5)? I'm looking for a starting point. I want
> to do a double
> exposure. The A2 manual suggests -1.0 stop for a
> double exposure. Is that
> a good place to start? It's probably going to be
> indoors. The subjects
> are going to be my two children. Probably one
> behind the other ( f/8 I
> think). What have you found to work the best as
> far as ISO, flash ( I
> have a 540EZ ), with or without flash compensation,
> natural light, I'm
> going to try and use my 100-400L USM ( if distance
> will allow ) because the
> photos are much sharper than with my 28-105 USM,
> anything else you can
> think of. I want to try and keep the "Ghost"
> effect out as much as
> possible also.
First of all why do you want to make double exposures?
If it is to get the two kids together in one picture
then it might be easier to get them together then
doing double exposures. If you have other reasons to
do so then here are some tips.
If you have two subjects each with a black background
and you do not overlap the two subjects then you have
to expose both of them as if you would take only one
picture. This is because each part of the image is
exposed only once and therefore needs the full
exposure without any correction. In that case you have
no ghost effect at all.
If you overlap both subjects completely then you need
a compensation of -1 for both pictures. This is
because each part of the picture is exposed twice so
for each exposure you have to give it half the
exposure. In that case you see both subject overlapped
with 50% ocapacy.
If you want anything in between you have to figure out
which is the important part that has to exposed
correctly and how much light does hit that part of the
picture from the two shots. If both have about the
same brightness or if you want to keep the ratio of
the brightness then you can just use -1 compensation.
If you want to adjust the brightness you have to some
more math. I think you got how it works so it should
not be too difficult.
If the background is relatively far away and you use
the flash as main light then you can reduce the ghost
effect for the background. Because the flash is the
main light and the background is far enough not the
get lots of light from the flash the background will
be quite dark. Now if your subjects do not overlap no
exposure compensation is needed. If they overlap then
you need exposure compensation.
The film you chose and the flash compensation you use
does not really change when doing double exposure.
Except if the flash is your main light and you do the
compensation for double exposure via flash instead of
the camera. But I think it is easier to do it via
camera.
Did that help some?
Robert
__________________________________________________
Do You Yahoo!?
Yahoo! Calendar - Get organized for the holidays!
http://calendar.yahoo.com/
*
****
*******
***********************************************************
* For list instructions, including unsubscribe, see:
* http://www.a1.nl/phomepag/markerink/eos_list.htm
***********************************************************
