Questions tagged [depth-of-focus]

The distance that the sensor can be moved along the optic axis while the image remains in acceptably sharp focus. Not to be confused with depth of field.

Filter by
Sorted by
Tagged with
2 votes
2 answers

Is this diagram I've drawn in regards to Depth of field correct?

This diagram is modelled after a video I saw on depth of field formula and its derivation. I have now learnt a bit more regarding Depth of focus and how it refers to "the tolerance of placement ...
vannira's user avatar
  • 143
0 votes
2 answers

Why is depth of field not always symmetrical about the object, yet depth of focus is practically symmetrical?

I have found an explanation on this, however I cannot seem to picture what the explanation is saying. From a Toshiba technical article: Remember that the previous subsection mentioned that the depth ...
vannira's user avatar
  • 143
5 votes
4 answers

What causes images to have flat depth?

I am learning about photography and I remember reading about an effect that causes images to look like there is no depth but now I cannot find what it is called or what causes it. I remember an ...
dandov's user avatar
  • 51
1 vote
2 answers

Depth of Field for scanning 35mm slides on flatbed scanners (Epson)

I have both an Epson V750 and V850 scanners and am trying to digitize a large amount of slides. The software for scanning does great for color restoration (slides dated from 50s on) but the issue is ...
Searching for In-Focus Images's user avatar
5 votes
3 answers

How do I specify circle of confusion and depth of focus in practice?

This question is related to this one; I am asking a very similar one because I didn't see in the answers how to arrive to a numeric answer in practice. Suppose I'm going to shoot a portrait and have ...
Michael's user avatar
  • 339
4 votes
4 answers

Does shift based perspective correction have any effect on focus?

Consider a photographer with an SLR camera and a PC lens attached in its default, unshifted position, standing on the ground at the base of a columned building whose height is X times that of the ...
SirPeepsalot's user avatar
3 votes
1 answer

Is there a way to add depth map metadata to a jpg?

I want to make Facebook 3d photos directly from the computer. I understand how depth maps work and also how to extract them, but what about embedding them so you can make your own custom photos and ...
Pablo Zárate's user avatar
1 vote
2 answers

How does aperture affect focus area? [duplicate]

How does the aperture affect the focus area? Here are some examples: With an 35mm(50mm)/f1.8 prime lens What f-value will bring a group of people standing in five rows into focus? What f-value will ...
vishnu's user avatar
  • 243
10 votes
1 answer

What is the difference between depth of field and depth of focus?

Reading this answer I realized that I didn't know the difference between the two depths (of field and focus). Browsing related questions didn't reduce the blur (!) between the two... Wikipedia ...
Francesco's user avatar
  • 4,079
38 votes
4 answers

What is back-focusing?

What is back-focusing? Is it something I need to be worried about, or can I just live with it? How can I tell if my camera/lens is sufferring from it?
Edd's user avatar
  • 3,037