I shoot at the aperture I need for the DoF I want, with concessions sometimes made to get a high enough shutter speed/low enough ISO. Good lenses mean I'm not afraid to shoot wide open when I need to, and with the exception of my fast holy trinity of primes, I do shoot wide open a fair bit of time.
+1 for me too
Yes, I agree with my teacher Mr. neuroanatomist that " I shoot at the aperture I need for the DoF I want".
Yes, Depend on our Need and the Purpose of that single Photo. Yes, If I want to make the Background to support the main subject---Not Interfere , I just Open the F. Stop wide like 1.2 of 85 mm, MK II, Photos # #2 and # 3 ( The DOF will be very super Shallow)----But If I want to keep the total Sharp of subject such as human/ Model, I just use 2-3 Step down Such as 1.8 or 2.8 , Photo # 1, for to see what in the back ground just for the story teller. If I shoot the Scenery View, I try to use 8.0 up to 10.0 for the most of Sharp of DOF., If I want to get the star effected( with out Have the Stars filter in that time ), of shoot direct to the sun between the tree branch, I will set the F. Stop up to 16.0 or the smallest FD. Stop of that Lens.----Big BUT, If we use the small F. Stop beyond 11.0, We will suffer of Lens Diffraction, "Diffraction is a loss of sharpness or resolution caused by photographing with small f/stops"
Yes, Just the Theory, But I do not care, I will set the F. Stop as I need, Shoot 3-5 Photos at Difference F. Stop, And Select the Photos in the Big LCD. Computer screen.
Nice to talk to you, Sir.
PS/. Photo # 1 = F = 2.8 ( 70-200 MK I)
Photo # 2. # 3 = F = 1.2 ( 85 mm MK II)
Photo # 4 F= 11.0 ( 100 MM L IS Macro)