13k views

### Is there a difference between taking a far shot on a 50mm lens and a close shot on a 35mm lens?

I am looking for a prime lens to pick up, and I'm wondering if there is any difference between 35mm and 50mm in terms of the end product if I just stand back more with the 50mm. I use the Sony a6000 ...
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 ...
4k views

### What is the "Circle of Confusion?"

I know that when I want to calculate Depth of Field by hand one of the variable elements in that equation is the Circle of Confusion. In layman's terms, what is the "Circle of Confusion," how do I ...
1k views

### Unable to get sharp landscape picture

I'm facing often the same kind of trouble when taking landscape pictures... I end up with a picture that could be great but that is totally not sharp ! Example : I set up the maximal focal distance ...
2k views

### Why is the area in focus in front of the focus distance narrower than behind it?

I guess the title and the picture explain my question well.
3k views

### Why does getting closer or zooming in decrease depth of field?

I know that aperture changes the depth of field (DOF), but why is it that by making the image appear larger (by getting closer to the camera or zooming in) there is less DOF?
2k views

### Any truth that depth of field extends from one-third in front of focal point to two-thirds behind it?

In the book Digital Photography Complete Course, there is a page that discusses and illustrates depth of field: There is an info box that says the following: The point at which you focus the lens ...
294 views

### Is there any mirrorless camera that can mark areas within DoF in the EVF?

All mirrorless cameras have the image in the rear LCD and the electronic viewfinder (EVF) fully generated by a computer, making many utilities such as noise removal, text overlays, histograms, etc ...
2k views

### How do I calculate the depth of field of cameras on mobile phones with auto focus?

I just hope to learn the relationship between depth of field (DOF) with the distance on my mobile phone. When I capture one cup with the distance about 20cm from my phone, what 's the DOF? When I ...
174 views

### Is the hyperfocal distance calculation outdated?

The hyperfocal distance H is calculated by H = (f^2)/(N*c)+f where f is the focal length, N the f-stop and c the circle of confusion limit. Lets assume we use a fullframe sensor. All those calculators ...
368 views

### Find hyperfocal distance for HD (1920x1080) resolution?

I'm using panohelp.com to prepare tables with hyperfocal distances for my camera. The most important camera-specific info I have to plug in is the circle of confusion (0.019mm for my Canon EOS600D). ...
943 views

### What is the depth of field if the the focus distance is set to infinity?

If the camera format is 35mm, the focal length of the lens is 35mm, the aperture is f/4, the subject distance is 25ft, and the hyperfocal distance is 39'7", then what would be the range of focus when ...
221 views

### Why do viewing conditions affect Depth of Field?

There's a lot of information here and elsewhere about how things such as aperture, focal length, and subject/focus distance affect Depth of Field (DoF). Most people seem to understand that side of it ...