Linked Questions

0 votes
3 answers
831 views

How to calculate the Aperture and Focal length needed for depth of field

I have a virtual camera in a game engine. The camera has an DOF setting where you can set the : Distance to object Aperture Focal length I would like to set a depth of field (lets say about 5m) ...
Charl Cillie's user avatar
5 votes
3 answers
1k views

Is aperture the same on different format of lenses?

I have just acquired a large format lens (a Schneider-Kreuznach Angulon 1:6,8/90) for the first time, coming from 35mm and medium format, and I am a bit puzzled by its aperture. I want to make sure I ...
Bastian's user avatar
  • 153
1 vote
3 answers
141 views

Is the sharpness of imaging different within the depth of field?

Is the sharpness of imaging different within the depth of field? Where is the sharpest? What I am asking is the distance from the lens to the object, not the image distance in the lens. How to ...
enbin's user avatar
  • 155
-3 votes
1 answer
124 views

For the formula 1 / u + 1 / v = 1 / f, what is infinite depth of field or hyperfocal distance?

For the formula 1 / u + 1 / v = 1 / f, what is infinite depth of field or hyperfocal distance? In other words, when u, v, and f, we have infinite depth of field or hyperfocal distance?
enbin's user avatar
  • 155
0 votes
1 answer
939 views

Everything in focus with d750 [duplicate]

as you can see the flowers are not focused, I cannot focus everything, I have to chose the squirrel or the flowers, is it normal? THANK you D750 28-300
Eduardo's user avatar
0 votes
2 answers
3k views

How to achieve photo with no blurred background [duplicate]

When zooming I want to keep background not blurred. Is this even possible? I will have multiple cameras pointing at one object from different distances can I get a flat picture on all of the cammeras ...
I will never get a sub's user avatar
9 votes
4 answers
4k 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 ...
Anil Joseph's user avatar
0 votes
3 answers
206 views

How to make pictures lots of kids so everyone's face isn't blurry?

I have a Nikon D850 with portrait lens AF 105mm f/1.4. I'm just learning how to make good pictures. We purchased this camera not for business — we have kids and want to make every possible memory. I'm ...
Irene's user avatar
  • 1
2 votes
3 answers
214 views

Take a telephoto portrait without background blur?

Is it possible to take a portrait of someone with a telephoto lens (for example 85 or 135mm) without any background blur (or at least with minimal blur)? I am planning to take portraits of somebody ...
Mike Lee's user avatar
2 votes
2 answers
1k views

"Focal Distance" / "Depth of field" of endocsopic and (car) backup cameras

In a nutshell, my question is: Why is the depth of field for endoscopic cameras so limited? It seems it is generally around 3 to 8cm (some are around 3 to 40cm). Why aren't they similar to automobile ...
Self Evident's user avatar
1 vote
2 answers
2k views

What are appropriate Circle of Confusion values for high-megapixel cameras? [duplicate]

Since the film days we have used 0.03 CoC for determining depth of field and similar calculations. In digital terms, does this best match with 6 or 12 or 24 or 36Mpixel full frame sensors? If this ...
Dom L's user avatar
  • 19
2 votes
1 answer
89 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?
physics2000's user avatar
21 votes
3 answers
8k views

How can a smartphone take pictures of a landscape with everything in focus?

After the announcement of the new Samsung Galaxy S9 with the new camera that changes aperture, I caught myself wondering: if smartphones have such a wide aperture (f/2.8, f/2.2, etc), how are ...
paulovlobato's user avatar
1 vote
1 answer
2k views

Software to combine multiple similar photos and choose the best parts from each

Note: This question was originally posted on Software Recs, but due to lack of activity I'm reposting it here. Windows Live Gallery had a great Photo Fuse feature that allowed you to select multiple ...
Amr Bekhit's user avatar
1 vote
3 answers
939 views

Why can I get sharp single person photos but not group photos?

I am just starting out in photography and when I am focusing on one point (like a single person portrait), I can get really sharp photos. However when I am photographing a scene or a group of people, ...
Debbily 's user avatar

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