Here's more photos of the lens and the size of the aperture blades.
This one at F/8.
This one at F/11.
At F/16
Ok, this lens goes up to F/32 but I'm gonna stop here. I think you get the picture. The higher the F-Stop number, the smaller the aperture blades.
So the question is, why is the picture sharper from the front to the back when the aperture blade is smaller (F/22) as opposed to when the aperture blade is larger (F/2.8)?
Well, the easiest way I try to explain this is when you want to see something very far away. You squint your eyes. The smaller your eyes, the sharper you see objects at a distance.
In some ways, the lens of the camera is the same with our eyes. The center of the lens is the sharpest part. The surrounding parts is not as sharp and tends to be blurry. So when you have a large aperture like F/2.8, your sensors see a lot of the surrounding parts of the lens. The center is where the focus is set, so the surrounding areas are in a blur or in photographic speak, shallow depth of field.
If you have a small aperture setting like F/16 or F/32. You are using only the center portion of the lens which is the sharpest part of the lens. That means, you get maximum sharpness from your subject up close up to nearly infinity for the background.
I'll discuss the F-Stop and aperture in more detail in my next post.
This one at F/8.
This one at F/11.
At F/16
Ok, this lens goes up to F/32 but I'm gonna stop here. I think you get the picture. The higher the F-Stop number, the smaller the aperture blades.So the question is, why is the picture sharper from the front to the back when the aperture blade is smaller (F/22) as opposed to when the aperture blade is larger (F/2.8)?
Well, the easiest way I try to explain this is when you want to see something very far away. You squint your eyes. The smaller your eyes, the sharper you see objects at a distance.
In some ways, the lens of the camera is the same with our eyes. The center of the lens is the sharpest part. The surrounding parts is not as sharp and tends to be blurry. So when you have a large aperture like F/2.8, your sensors see a lot of the surrounding parts of the lens. The center is where the focus is set, so the surrounding areas are in a blur or in photographic speak, shallow depth of field.
If you have a small aperture setting like F/16 or F/32. You are using only the center portion of the lens which is the sharpest part of the lens. That means, you get maximum sharpness from your subject up close up to nearly infinity for the background.
I'll discuss the F-Stop and aperture in more detail in my next post.
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