17k views

### Why Small aperture (less light) has Large depth of field? [duplicate]

Possible Duplicate: Technically, why is the out of focus area blurred more when using a bigger aperture? I understand that a small aperture (large aperture number eg. F/22) means large depth of ...
2k views

### Why does a larger aperture cause more blur of the background? [duplicate]

Possible Duplicate: Technically, why is the out of focus area blurred more when using a bigger aperture? Why is it that a larger lens aperture produces a shorter depth of field, causing the ...
394 views

### Mathematical relation between aperture and DOF [duplicate]

I know that aperture and DOF are inversely proportional. But, can anybody explain to me the Physics/Optics behind that? What's the mathematical relation that relates aperture with DOF?
106 views

### Why Does Depth of Field Happen? Is there a simple explanation? [duplicate]

I think if our eyes are good there are not many situations where we naturally percieve a shallow DOF. How is it that lenses create this? What happens for shallow DOF to happen in photos and on movies?
130 views

### What is Aperture in Camera? [duplicate]

This is first of my few questions coming up on cameras. I cannot ask all in one question as they relate to different topics. My first question: What is Aperture in Camera? Why Having a bigger ...
66 views

### Depth of field and aperture size [duplicate]

Why does a smaller aperture size have a high depth of field? What is the physics behind this?
142k views

### What is aperture, and how does it affect my photographs?

How does aperture affect my photographs? Why should I care about the aperture with which a photo was taken?
7k views

### How does aperture work without “cropping” the image hitting the sensor?

I've been teaching myself the various settings in cameras and now have a much fuller understanding of how to use my camera effectively, but one thing is still bugging me. When the aperture size is ...
48k views

### Does a bigger aperture create better photos?

I have observed that the wider the aperture, the more expensive the lenses are. However, I would like to know whether it really makes a difference in your photos or not?
3k views

### Is camera lens focus an exact point or a range?

I have often wondered if the focus of a lens at a particular focal length is an exact point or a range within a few millimeters. This becomes all the more important when manually focussing. How far ...
1k views

### Where to focus when shooting landscapes?

When I am shooting landscapes, where (at what point) should I focus when using Auto Focus? Or if I am shooting the lit up skyline of the city, what should be my focus point? The reason I ask is that ...
23k views

### Why does higher aperture (less light) make an image sharper?

Why does higher aperture, less light, make an image sharper? Or rather make everything in focus? And how does this lead to lenses having a sweet spot in sharpness?
4k views

### What is the formula for determining where infinity focus begins?

I'm having difficulty find any info on determining where infinity focus begins. I'm assuming there's a formula involving focal length and... Can anyone help?