hello I'm Graham and hope everyone's having a great day welcome to today's
video in this video I'd like to introduce you to a new feature that's
been incorporated into the manual mode of the F sub 300 watts 330 in the Europe
or indeed it's in the F said 1000 that's been used to film this sequence now this
feature called auto ISO has been incorporated into the
fully manual mode at the request of several photographers now you want the
why we've incorporated the auto ISO in what has been traditionally a fully
manual mode so as photographers we decided how we want to set up that
exposure so for example depth of field might have been important so we set that
but I controlling the aperture and then if we've locked the ISO down to give us
the minimum noise in our scene we would balance the equation by changing the
shutter speed to give us the right exposure alternatively we were a sports
photographer or a while.i photographer maybe the subject motion below was the
criteria that we wanted for that picture so we said a very fast shutter speed
again from lock tower is all down at 100 we would use the aperture to balance the
equation but what if we wanted to have a specific depth of field and a specific
minimum subject motion blur how do we accomplish this equation well that is
where the auto ISO features come in normally if the light situation is
changing you're having to constantly balance the equation so if you're in
aperture priority mode you've got to change the shutter speed or if you're in
the minimum shutter speed situation you're going to have to bear the
aperture to keep the equation balanced but by having auto ISO you can determine
the aperture you want for this particular shot you can determine the
shutter speed to maintain the right amount of subject motion blur and let
the camera decide on the ISO to balance the exposure for you and it doesn't
matter if that light situation changes the camera will change the ISO so you're
always maintaining the right shutter speed and the aperture for the depth of
field of course you can dial in a top ISO limit so for example with the SOP 30
you might want to control that to eight or for example what the eff said 1000
you might want to control that it's 1600 so the camera will work from 100 up to
the top limit that you've set and it will give you a warning if you have
approached that top limit and normally the icons will appear red at the bottom
of your LCD screen so you'll know that you haven't been changed one of the
components we already preset may be your aperture or your shutter speed to get
you away from the top ISO setting so it's a useful feature if you want to
have both the aperture and the shutter speed set to a specific value for your
particular type of photography it loves the camera to make the exposure
determination by changing the ISO for you try this method out set your camera
to manual set the aperture to what you want for the depth of field you're
required to capture set the shutter speed to the reciprocal of your focal
length so if you're using say for example the equivalent of a 200
millimeter focal length set the shutter speed to 1 200 and then you'll get
minimum subject motion blur and then with a camera set to auto ISO the camera
will determine what is aw will be needed for the aperture selected and that
shutter speed of 1 over the focal length do try that out you'll find it a really
useful feature if you're shooting in the fully manual mode what we find that
useful please do click the like button please do subscribe if you're not
already subscribing to this channel and then if I do upload any new videos will
appear in your subscription list also check out my photographic blog if you're
not aware of that and I put a link to that in the video description below so
thanks again for watching please take care and I'll see you in my next video
goodbye for now
you