What is aperture for you?
Oct 12, 2017 11:06:52 #
Oct 12, 2017 11:07:42 #
Oct 12, 2017 11:10:57 #
Oct 12, 2017 11:12:14 #
ricardo7
Loc: Washington, DC - Santiago, Chile
A way to control depth of field and image sharpness, especially on the corners.
Oct 12, 2017 11:12:45 #
Leitz
Loc: Solms
Rongnongno wrote:
A simple question.
A hole or an opening through which light travels. And Wikipedia agrees with me.
Oct 12, 2017 11:37:32 #
Rongnongno wrote:
How do you use it?
Why?
Why?
Can't answer that. Every shot is different. Sometimes I need it to control how much flash hits my sensor. Sometimes I use it to control depth of field, sometimes I use it to allow me to use a faster or slower shutter speed.
All three legs of exposure hold equal weight for me. I don't "spray and pray" I actually plan my shots... and know how to use shutter speed to stop action or show motion, and I know that aperture does more than change DOF (as in flash exposure)
ISO is just as important, because it allows me to get the effect I want by using the SS and Aperture how I want it. The abilities of higher ISO just make life easier.
Oct 12, 2017 11:52:05 #
ricardo7 wrote:
A way to control depth of field and image sharpness, especially on the corners.
'image sharpness, especially on the corners'? You are dealing with a lens issue, not dof or settings for light issue. I do not see it. Can you expand further?
Oct 12, 2017 11:55:28 #
bkyser wrote:
Can't answer that. Every shot is different. Som... (show quote)
... I use aperture first then I use speed to control motion and if really needed I will use ISO, with great reluctance if I have no other choice. Today's camera have a base ISO DR capability not seen before so I play with that first. To me DR made life easier, not ISO.
Oct 12, 2017 12:03:48 #
dandi
Loc: near Seattle, WA
Watch this video by leica Photographer Thorsten von Overgaard.
https://www.youtube.com/watch?v=JAv7c-D_M04
In his opinion Aperture is not really to control light but mostly for sharpness and depth of field.
He also talks in other videos about Shutter Speed, ISO and Sharpness.
https://www.youtube.com/watch?v=JAv7c-D_M04
In his opinion Aperture is not really to control light but mostly for sharpness and depth of field.
He also talks in other videos about Shutter Speed, ISO and Sharpness.
Oct 12, 2017 12:43:33 #
dandi wrote:
Watch this video by leica Photographer Thorsten von Overgaard.
https://www.youtube.com/watch?v=JAv7c-D_M04
In his opinion Aperture is not really to control light but mostly for sharpness and depth of field. (DoF ~ added)
He also talks in other videos about Shutter Speed, ISO and Sharpness.
https://www.youtube.com/watch?v=JAv7c-D_M04
In his opinion Aperture is not really to control light but mostly for sharpness and depth of field. (DoF ~ added)
He also talks in other videos about Shutter Speed, ISO and Sharpness.
That I agree with in principle. But what is your take on it?
Note that sharpness through aperture is mess. Too open it is a 'problem' and too close it is also a problem. Both are 'issues' are at the sensor's pixel level. Sharpness should be regulated by the lens capabilities and setting, not the aperture for DoF.
When it comes to DoF we have a couple of issues:
- plan of focus
- distribution of acceptable Field of Sharpness* (aFoS) depends on the lens
It all really comes down to the choice of lens and requirement for a subject 'correct' capture.
Note: I totally disagree with the statement made at the beginning: Aperture is a way to increase the focus. (:20s time). Aperture does not and will never increase the focus. It increases the aFoS.
------
* Lens focal length, distance to subject are the initial variables then comes aperture. A base 1/3 in front and 2/3 in the back distribution is generally accepted but it is not accurate.
Oct 12, 2017 13:46:44 #
dandi
Loc: near Seattle, WA
Rongnongno wrote:
That I agree with in principle. But what is your ... (show quote)
My take: I keep it pretty simple. It’s all starts with how you want your picture to look, how much should be in focus, and it depends on the Aperture. So you set your Aperture first. Shutter Speed is the main light controller, so, you adjust Shutter Speed for a right exposure. Of course if you are shooting fast action you probably use Shutter Speed Priority, but that’s another story.
I like what this photographer said. He goes back to the basic of photography without making it too complicated, he kind of puts thing in perspective.
Another words, if we use Aperture to adjust Exposure we get a different look of the picture.
Oct 12, 2017 13:52:07 #
Oct 13, 2017 06:07:02 #
Rongnongno wrote:
'image sharpness, especially on the corners'? You are dealing with a lens issue, not dof or settings for light issue. I do not see it. Can you expand further?
LensTip.com does extensive testing. I have the Tamron 45mm f/1.8 they tested here. I've taken my own test shots at the same apertures they used for their testing and I can see a correlation. I can see that the lens is its best around f/4 to f/5.6 at lens center and f/5.6 to f/8 at lens edge.
Oct 13, 2017 06:23:17 #
Rongnongno wrote:
A simple question.
The size of the opening in the lens.
Oct 13, 2017 07:02:03 #
A simple answer. Aperture is setting the camera lens to a specific aperture which is decided by the photographer to get the desired results in the photograph being taken.
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