Manual settings

[Motownkid]

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akong P&S naay Manual..
Aperture ug Shutter speed

nya f2.8 ug f7.1 ang options, pero mosaka siya ug step kung i zoom..
wala ko kasabot, kay if akong i set sa f7.1, mongitngit...

basin too narrow na nga aperture 7.1 pra sa imong cam bro.. gamay ra nga light ang makasulod.
suwayi daw dungag ug light inig take nimo ug picture, OR, set to a slower shutter speed.

[abortretryfail]

akong P&S naay Manual..
Aperture ug Shutter speed

nya f2.8 ug f7.1 ang options, pero mosaka siya ug step kung i zoom..
wala ko kasabot, kay if akong i set sa f7.1, mongitngit...

aperture is actually the result of this formula:

f = focal length ÷ diameter of hole

so even if the hole stays the same size but you zoom in the aperture
automatically stops down (from f2.8 to f7.1)

another way to put it is a tunnel. the mouth of the tunnel stays the
same. when you're near the mouth it's very bright. but as you go
into the tunnel it gets darker as light loses power as it travels in... even
if the mouth of the tunnel stays the same.

so for constant aperture zoom lenses what happens is the size of the
hole increases to compensate for the increasing length of the lens. that's
why for instance that the Sigma 24-70 f2.8 is bigger than the Sigma 17-70
f2.8-4.5

if they were to do the same for your p&s you would end up with a small
camera with an extremely large lens sticking out the front

[abortretryfail]

ISO settings play exactly the role of what when framing a photography

nothing... nada... zilch... zero... uh, what else?... zip!!!!

ISO is a factor of exposure. not of framing or composition.

it's a measure of how sensitive film/digital sensor is to light
the higher the ISO the more sensitive or the quicker it can
capture the light.

what's your ideal setting for the ff:
1. outdoor daylight
2. outdoor night time w/ no lights
3. outdoor night time street lights
4. shooting a concert stage performer (w/ lights)
5. indoor flourescent
6. indoor stadium/gym

it depends on how you want the end result to come out.
the best way is for you to understand light and how your camera
controls exposure.

...or you can take my upcoming workshop on mastering manual control

[nunobone]

ahh ok,
and also diba Aperture controls the DoF?? sakto?

[abortretryfail]

yes... it's one of the factors

the smaller the aperture (bigger number) the greater the DOF
bigger the aperture (smaller number) the shallower the DOF

other factors of DOF are focal length and distance from camera
to subject

sensor size also plays into DOF with the small sensors of p&s and
prosumer cameras giving greater DOF than the APS size sensors of
dSLRs even at the same settings.