Linked Questions

0 votes
3 answers

Why does the 55-250mm blur the background nicely and easily while the 18-55 does not? [duplicate]

I have a Canon 700D and I am new to photography (around 1 month). I got two kit lenses with my camera - the 18-55mm and 55-250mm. I usually use the 18-55mm lens as most of photography I have yet done ...
Mohit Bhardwaj's user avatar
2 votes
2 answers

How to focus at several locations at once? [duplicate]

I've seen pictures with several objects being in focus and others not in focus. How do I do that? When I focus my camera, lets say along a wall, only parts of the wall will be in focus. Here is a ...
Chris's user avatar
  • 141
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
0 votes
1 answer

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

How can I know how far the in focus area extends [duplicate]

I know when for example camera is on f2.8 it means an area in front and back of the place that focus is, will be in focus and areas closer or farther will be out of ...
Brandon's user avatar
  • 2,460
-4 votes
1 answer

Minimum sensor size to get a separation between the subject and the background [duplicate]

What is the minimum sensor size need to get a separation between the subject and the background (bokeh) ? Print size A5 Not using a DSLR . Assuming max aperture is f/2.8 at wide end.
nish1013's user avatar
  • 217
-4 votes
2 answers

What does depth of field mean? [duplicate]

What does the term depth of field mean? How is it determined and how can it be changed? Is it related to the aperture?
Sachin Kainth's user avatar
2 votes
2 answers

Invariants in subject size and depth of field? [duplicate]

I was curious if I could cheat my way around having to focus stack an object by using different lenses. Playing with the Depth of Field calculator I noticed something interesting: No matter what ...
feetwet's user avatar
  • 3,603
1 vote
2 answers

What variables define DoF? [duplicate]

I want to be able to see a frame and 'calculate' (either mathematically or intuitively) the DoF of the picture to be taken. The most basic variable would be the aperture; my question is do other ...
onimoni's user avatar
  • 327
0 votes
2 answers

Am I doing something wrong or do I need a new lens? [DOF and focal length] [duplicate]

I'm new to photography and I can't get a nice DOF. I read up on all the technicalities that involve DOF and I still can't get it right. For example, if you take a picture very close to an object, ...
Chris 's user avatar
  • 243
2 votes
1 answer

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
48 votes
20 answers

How can I maximize the "blurry background, sharp subject" (bokeh) effect?

I know that this effect occurs when there's a shallow depth of field. My question is, what are the various ways I can increase this effect in my photos when I'm taking them? Note that I'm not ...
Jaydles's user avatar
  • 2,052
46 votes
12 answers

How can I get dramatic shallow DOF with a kit lens?

I'm currently using an entry-level DSLR with 18-55mm lens and having great trouble trying to creating a blurred background effect in my photos. Now matter what aperture or shutter speed I choose, I'm ...
David's user avatar
  • 545
57 votes
9 answers

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?
Dan McClain's user avatar
  • 2,087
41 votes
6 answers

Why does a bigger sensor lead to a shallower depth of field?

It has been mentioned at a few places that a larger sensor results in images with a shallower depth of field. Example image: APS-C Canon 30D left, FF Canon 5D right, same lens¹, same composition, ...
Lazer's user avatar
  • 4,049
27 votes
7 answers

How do I get the best results with a cell phone camera?

I know cell phone cameras are the lowest rung, but when reading reviews of phones, the reviewers always have sample shots that are much better than what I can manage. What are some ways to take ...
Alan Jackson's user avatar
21 votes
3 answers

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
25 votes
9 answers

Can a smaller sensor's "crop factor" be used to calculate the exact increase in depth of field?

If APS-C and similar crop-sensor digital cameras have a focal length multiplying effect such that a 50mm lens has an apparent focal length closer to the field of view of an 80mm on a full frame camera,...
Sean's user avatar
  • 3,837
21 votes
6 answers

Why is depth of field affected by focal length?

As the focal length decreases, the depth of field increases as well. Why is this? I'm not so much interested in a physics lesson as I am interested in a simple, down-to-earth explanation.
Daniel T.'s user avatar
  • 1,827
13 votes
3 answers

How can I take a photo with everything in focus with my DSLR?

I am quite new to DSLRs and one of the first things I noticed was the incredible focus points and appearance of depth that you can achieve. That is great in a lot of scenarios, but not in all. When ...
Bram Vanroy's user avatar
26 votes
4 answers

What is a "fast" lens?

I've been reading lots of camera reviews lately and have ran across several references to "fast" lenses. What exactly is a fast lens and what are its advantages compared to other lenses?
Patrick Ritchie's user avatar
19 votes
4 answers

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?
Anil Namde's user avatar
10 votes
8 answers

Why am I having trouble getting sharp results with my new DSLR, compared to a point and shoot?

I'm having issues with my new Nikon D3200. I am new at photography, but I've previously used my parents camera (a Canon) for my brother's senior photos, and those were crystal clear. I've got this ...
user26074's user avatar
  • 101
18 votes
5 answers

How does changing focal length affect depth of field?

I'm curious about how my "area of acceptable focus" changes when the focal length of the lens I'm using changes as I zoom (or switch lenses). In particular, I'd like to know how the front & back ...
Craig Walker's user avatar
20 votes
3 answers

Why are DSLR lenses measured in F stops instead of T stops?

I understand the difference between f-stop and t-stop, but why are cinema lenses measured in one, and dSLR lenses measured in another?
Barney Chambers's user avatar
21 votes
7 answers

How does background blur (bokeh) relate to sensor size?

This is a somewhat theoretical question. Suppose I first take a photo of a subject using a full frame sensor DSLR, with a given lens (say 50mm prime lens at f/3.5). Now suppose I exchange the camera ...
Laurent's user avatar
  • 359
15 votes
5 answers

Will a dSLR and compact camera produce the same bokeh output at f/2.0?

Will a Nikon D80 + 50mm f/1.8D and a Lumix LX5 set both at an aperture of f/2.0 (50mm @ f/2.0 for D80 and 24mm @ f/2.0 for LX5) have the same bokeh ouput? I plan to get the LX5 as a second camera, and ...
Eric's user avatar
  • 385
6 votes
7 answers

Do I use the crop factor in calculating aperture size and area?

How do I calculate the aperture size and area, considering an 35mm equivalent focal length value and non-equivalent aperture f-number (in terms of exposure, no multiplication of the crop factor of the ...
Liron Harel's user avatar
12 votes
4 answers

In food photography (using a nifty fifty lens) how can I make my food shot more in focus and not blurry?

I've recently purchased a "nifty fifty" lens for my food photography. I've noticed that when I'm taking photos of my food, I just can't seem to get the focus down. For example, when I get my shot ...
Rachael Abel's user avatar
14 votes
6 answers

How do I find a point-and-shoot camera specifically for bokeh / a very shallow depth of field?

I will be getting a point-and-shoot camera for taking portraits and only portraits. Specifically portraits with a shallow depth of field. Groups portraits sometimes. It's just too much work to add ...
William C's user avatar
  • 641

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