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Showing posts with label photography. Show all posts
Showing posts with label photography. Show all posts
Monday, September 12, 2011
Saturday, July 25, 2009
Friday, January 23, 2009
Learning about Exposure - The Exposure Triangle by Darren Rowse
Bryan Peterson has written a book titled Understanding Exposure which is worth a read if you’re wanting to venture out of the Auto mode on your digital camera and experiment with its manual settings.
In it Bryan illustrates the three main elements that need to be considered when playing around with exposure by calling them ‘the exposure triangle’.
Each of the three aspects of the triangle relate to light and how it enters and interacts with the camera.
The three elements are:
ISO - the measure of a digital camera sensor’s sensitivity to light
Aperture - the size of the opening in the lens when a picture is taken
Shutter Speed - the amount of time that the shutter is open
It is at the intersection of these three elements that an image’s exposure is worked out.
Most importantly - a change in one of the elements will impact the others. This means that you can never really isolate just one of the elements alone but always need to have the others in the back of your mind.
The Window
Imagine your camera is like a window with shutters that open and close.
Aperture is the size of the window. If it’s bigger more light gets through and the room is brighter.
Shutter Speed is the amount of time that the shutters of the window are open. The longer you leave them open the more that comes in.
Now imagine that you’re inside the room and are wearing sunglasses (hopefully this isn’t too much of a stretch). Your eyes become desensitized to the light that comes in (it’s like a low ISO).
There are a number of ways of increasing the amount of light in the room (or at least how much it seems that there is. You could increase the time that the shutters are open (decrease shutter speed), you could increase the size of the window (increase aperture) or you could take off your sunglasses (make the ISO larger).
Source: http://digital-photography-school.com/learning-exposure-in-digital-photography
Related posts:
aperture,
camera,
exposure,
ISO,
manual,
photography,
shutter speed
Saturday, November 22, 2008
Battlefield Tour photo essay
The poppies are a symbol of the war dead. Rubble created by sustained bombing began to leach lime into the soil, coincidentally conducive for this blood-red flower to bloom in unprecedented quantities. After the lime was absorbed deeper into the ground, the poppies disappeared just as mysteriously as they had arrived. They now symbolise the blood shed for the noble cause.
The cross, a Christian symbol of salvation, stands resolutely over the cemetery, a pleasant reassurance of Christian soldiers eternal destination.
Our first stop - Changi War Museum. Photography was not allowed inside the museum so most of the photos are of the replica chapel found inside the old Changi Prison.
The Battlefield Tour photo essay is out. Here are some selections, but view it in its entirety at http://www.facebook.com/album.php?aid=60336&l=46f7d&id=524401104.
Friday, October 10, 2008
Prisoner of Azkaban
Related posts:
Harry Potter,
photography,
Prisoner of Azkaban
Thursday, October 09, 2008
Tilt-shift lens
Tilt-shift lenses allow the user to select a very narrow band of focus. Our brain then interprets the subject then as miniature, giving a Lilliputian look to the shot.
Related posts:
camera,
focus,
Gulliver's Travels,
lens,
Lilliput,
photography,
tilt-shift
Friday, June 01, 2007
Safety on Ubin
Just read in the New Paper today that FM93.3 DJ Dennis Chew got into a very bad biking accident on Pulau Ubin. He broke his jaw and fractured his arm. He probably pressed his front brake instead of his back and flipped over.
So all the more we have to be careful when we're there.
I also think those of you who are keen to take some photographs can take your camera along and take photos of nature etc.
---------
So ironic. For all of my foreboding, it was yours truly who got into the biggest accident after all. Went down a slope too quickly, my back brake didn't catch well enough, hit the hump and flew off course towards the beach, hit the kerb and damaged my front wheel, flew off my bike to the ant-infested beach where my bike landed nicely on my right arm. If it sounds bad, that's because it was. And yet God protected me and I ended up with only a few abrasions. Amazing. I believe that was God's way of telling me to ride carefully, seeing how He gave a near-accident earlier on another down-slope.
God is indeed looking after us. He gave us a brief shower when we prayed for some, found CK when we prayed after he got lost etc. God is truly amazing.
So all the more we have to be careful when we're there.
I also think those of you who are keen to take some photographs can take your camera along and take photos of nature etc.
---------
So ironic. For all of my foreboding, it was yours truly who got into the biggest accident after all. Went down a slope too quickly, my back brake didn't catch well enough, hit the hump and flew off course towards the beach, hit the kerb and damaged my front wheel, flew off my bike to the ant-infested beach where my bike landed nicely on my right arm. If it sounds bad, that's because it was. And yet God protected me and I ended up with only a few abrasions. Amazing. I believe that was God's way of telling me to ride carefully, seeing how He gave a near-accident earlier on another down-slope.
God is indeed looking after us. He gave us a brief shower when we prayed for some, found CK when we prayed after he got lost etc. God is truly amazing.
Related posts:
beach,
cycling,
fracture,
God,
photography,
Pulau Ubin,
The New Paper
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