Your opinion? Ixora - West Indian Jasmine

[Shan]

Ixora is a genus of flowering plants in the family Rubiaceae. It is the only genus in the tribe Ixoreae. It consists of tropical evergreen trees and shrubs and holds around 562 species. Though native to the tropical and subtropical areas throughout the world, its centre of diversity is in Tropical Asia. (Wiki)

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[Deleted member 250]

Lovely colours and detail on the stamens Shan.
A question if I may, Why are all your images shot at f32?

 

[Shan]

Lovely colours and detail on the stamens Shan.
A question if I may, Why are all your images shot at f32?

because i never stack to get the most of the dof in d7200 i have found that at 32 there is minimum lens distortion. Sometimes i go upto 36 if there is more dof th at i need to capture but no further....

 

[Deleted member 250]

Shan I shoot with a Nikon D7000 and rerely exceed f22 (usualy f16).
Most lenses have a "sweet spot" at about 2-3 stops from wide open and at about a stop or two beyond that image quality starts to degrade due to optical diffraction within the lens.
So given, say a maximum aperture of 2.8 maximum sharpness (not dof) probably occyrs at about f8 or so and starts to degrade due to diffraction at about f 16 or so.
The attached image was shot at f16

 

[Shan]

Tell me honestly ...do you see distortion at f32?

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[Deleted member 250]

Tell me honestly ...do you see distortion at f32?

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No but I am talking about definition and sharpness. (Distortion is a different area altogether) it will be apparent in other images with different lighting conditions. In todays optics diffraction is less obvious but it exists.
Also by always using f32 or f36 you are limiting yourself to slow shutter speeds or to using flash.
I only wanted to share some information regarding lens diffraction which is an optical law that exists in almost all lenses.

 

[Deleted member 310]

Shan
the f corresponds to the depth of field which differs according to how far you photograph the subject. The closer you are to the subject, the higher the depth of field (depending on the subject) and the more you shoot from afar you will decrease the depth of field. the depth of field influences the bokeh of the photo, the wisest is to use the button test depth of field on your device, if you have one

 

[Helix_2648]

@Christophe Berche this is a really good explanation about the lens distortion.
That's the reason why most lenses have the best sharpness at +- f/8.0.



This upper diagram from Traumflieger.de (just as an example) shows this very well. You'll get the best results for this lens at a focal length of 50mm and an aperture of f/8.0. The higher the lines the sharper the picture. f/16.0 at 24mm is much worser than at f/5.6

 

[Deleted member 250]

Shan
the f corresponds to the depth of field which differs according to how far you photograph the subject. The closer you are to the subject, the higher the depth of field (depending on the subject) and the more you shoot from afar you will decrease the depth of field. the depth of field influences the bokeh of the photo, the wisest is to use the button test depth of field on your device, if you have one

Are you sure this is the correct way around @Christophe Berche ?

 

[Deleted member 310]

@Bill Edwards ,
I explain only what the depth of field corresponds to, and that it has an influence on the bokeh