Linked Questions

0
votes
3answers
6k views

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 ...
2
votes
2answers
289 views

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 ...
1
vote
2answers
2k views

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 ...
0
votes
2answers
752 views

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 focus, but if it is for example f22....
0
votes
1answer
568 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
2
votes
2answers
165 views

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 ...
-4
votes
2answers
207 views

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?
-4
votes
1answer
207 views

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.
1
vote
2answers
180 views

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 ...
0
votes
2answers
159 views

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, ...
2
votes
1answer
69 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?
46
votes
20answers
17k views

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 ...
44
votes
12answers
41k views

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 ...
57
votes
9answers
143k views

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?
36
votes
6answers
27k views

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 lens, same composition, ...

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