Linked Questions
14 questions linked to/from Why I am getting different values for depth of field from calculators vs in-camera DoF preview?
29
votes
6answers
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 ...
9
votes
4answers
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 ...
17
votes
3answers
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 ...
7
votes
5answers
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 ...
6
votes
6answers
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.
4
votes
3answers
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?
4
votes
3answers
1k 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 ...
1
vote
3answers
225 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 ...
1
vote
2answers
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 ...
2
votes
3answers
340 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).
...
2
votes
3answers
135 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 ...
0
votes
1answer
685 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 ...
3
votes
2answers
207 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 ...
0
votes
5answers
151 views
How does background blur and DoF vary with sensor size for a prime lens?
Let's assume I have a prime lens for full frame, with fixed specs (let's say 85mm f/1.8). Changing the lens is not an option, but I have a choice of a full frame camera and a crop sensor camera. The ...