Why so high an ISO on a bright sunny day?
To get the shutter speed fast enough to stop a very fast moving dog.
Why stop the fast 2.8 lens down so far? At 5.6 to 8 you could have gone > for a higher shutter speed to freeze the motion, no? Please correct me if > I'm wrong, I'm just a novice
And sometimes I do...but for the most part I try to keep my speed &
f stops to a minimum.
I need the depth of field for two reasons.
1) It's not easy to focus on fast dogs, especially some of the
REALLY fast ones. So I take advantage of a smaller aperture to
increase my depth of field. The minimum I prefer, is f 8. That way
my focus area is a bit longer. This is most important when I am
shooting a dog coming right at me.
2)If I don't have the longer DoF, I tend to get a small area in
focus, and the rest is off a bit. (Shooting a moving object from
the side doesn't require the same amount of DoF.) I try to keep my
focus on the dog's eyes, but sometimes it ends up being the nose or
the dog's body, if I am not paying attention to how the dog propels
itself over a jump, or across the ground. If I am on the ball, (and
no one is yacking at me, or vice versa. while I am shooting) I am
pretty accurate in my evaluation of where the dog's eyes will be
when I shoot the photo.
The ONLY times I open my lens up is if I am indoors, in poor
lighting or on nasty rainy day (Yes, I shoot in rain too, in
downpours. The shots are really cool!) or very cloudy days....Then
I also must comprimise my shutter speeds too. The results are not
as good as the outdoor shots, but to my amazement, people STILL buy
those photos too! I have shot pics at 1600 ISO, f2.8 at 1/180th,
and gotten sort of reasonable results. Lots of noise or on film
grain, but what elso can I do in poor conditions, when people WANT
those shots!
I also use exposure compensation a lot on the S1. So far I haven't
used it much...Only on some really black dogs. The shutter speed
and aperture also depend on the meter reading I get off an
indiviual dog's coat. So for a white dog I may lower my ISO, and
increase shutter speed to help to not over expose in bright
sunlight...A dark dog I may open up a stop or two or increase my
ISO or change the shutter speed. I also shoot the vast majority of
my outdoor shots when the sun is straight up, so I need to
compensate my exposures for that too. Theres a lot to think about
when shooting these speed demons. I have a speed demon myself, I
try to get any photos from other photographers I can...But they
can't stop her action most of the time. I named her well, High
ISO!(the exclaimation point is part of her name) what an
appropriate name.
--
Alissa
http://www.pet-personalities.com