Aperture
Far better to caluclate the hyper-focal distance for a given aperture and len combination.
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
With zooms it might also be a function of focal length as well as aperture. My Sigma 135-400 lens ahs a stunning IQ. up until 350mm. After that it rolls off a bit. So much so that I get better IQ by shooting at 350mm and cropping than I do shooting at 400mm.
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
This is why I can never fathom the shutter priority mentality. I know people who set shutter speed once then change aperture to balance it, which to me is very strange. I set the aperture to get the sharpness/DOF I want then the shutter speed is matched, although obviously if in low light I'll sacrifice DOF to avoid camera shake.
Tv mode does have its uses, such as aircraft where you either want the camera locked to the fastest possible speed for jets or 1/125 or so to avoid frozen propellers.
Shooting the Welsh Wilderness with K-m, KX, MX, ME Super and assorted lenses.
This is why I can never fathom the shutter priority mentality. I know people who set shutter speed once then change aperture to balance it, which to me is very strange. I set the aperture to get the sharpness/DOF I want then the shutter speed is matched, although obviously if in low light I'll sacrifice DOF to avoid camera shake.
Tv mode does have its uses, such as aircraft where you either want the camera locked to the fastest possible speed for jets or 1/125 or so to avoid frozen propellers.
Strangely it was shutter priority that made Canon popular with the AE1 (no remarks please about Canon users being dim ).
Pentax K-1 + K-5 and some other stuff
Algi
Weirdly it does have a use there. If you want to fiddle around proving that some DA lenses are full frame capable then shutter priority will allow you to change the aperture in a rather roundabout manner.
Shooting the Welsh Wilderness with K-m, KX, MX, ME Super and assorted lenses.
The theory went that otherwise you were also focusing on things beyond infinity (as DOF extends further behind the subject than in front), whereas by doing this you use the hyperfocal distance to have far closer objects in focus.
Shooting the Welsh Wilderness with K-m, KX, MX, ME Super and assorted lenses.
Pentax K-1 + K-5 and some other stuff
Algi
I find it much, much easier to turn an aperture ring and read the DOF scale than it is to twirl a thumbwheel and guess the DOF!
Shooting the Welsh Wilderness with K-m, KX, MX, ME Super and assorted lenses.
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34 posts
14 years
Rochdale
If I am taking a shot of something in the distance, on infinity focussing, does the aperture still effect how sharp the image will be?