Making you dizzy looking around 

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Orchid DOF study Sigma Macro 150 F2.8

Camera stangind on a tripod in Av mode.
One by one, i took a photo using all Fsteps the lens allowed (from F2.8 to F22)
You can check the DOF variation along the animation.

 
Home Technical Orchid DOF study Sigma Macro 150 F2.8