petrochemist
Veteran Member
I may have auto ISO but I wouldn't use it with P.Think about it: In a film camera, when you set P mode and you need a faster shutter, you spin the wheel and it shifts the exposure. But if you have AutoISO, you spin the wheel and it might change your shutter speed or it might change your ISO. And then you curse out loud and people give you funny looks.I think my digital cameras all allow me to specify which wheel changes what in P mode, but I don't use it much so that may only be the case on the DSLRs. (where I have the rear wheel adjust aperture/shutter speed as a pair & the front wheel do EC. If I want to adjust ISO I typically use a secondary button with the wheel (this option is not available on all my digital bodys).I tried using P but I dislike it strongly. The problem I run into is that when you “shift” the exposure, it can shift ISO instead of Aperture/Shutter. Unless I assign the ISO, the P mode is no good for me.I've got nothing against P, it's just a more flexible semi auto mode. I don't use it much as I started on Av & find it works for me most of the time. It's normally at airshows where Tv comes into it's own for me. Here I have Av with the aperture near wide open for jets & a quick switch to Tv for propellor craft. No need to adjust to the right region when switching mode the camera remembers where it was earlier.I do not understand why so many people complain about using P (Program) mode. For me, it is in most situations a good starting point. If i have special requirements in a situation i can use program-shift and/or exposure-compensation. Since the invention of matrix-metering the camera has in most cases a good guess of the right exposure.
Using (or rely on) P-mode allows me to be more focused on framing.
For me, all the preaching that (full-)manual is a prerequisite for good photos is a type of snobbism.
I think some of those preaching manual only, purely shoot in studios with the lighting under their control. Manual is ideal for this. They just can't understand that lots of photography involves fast changing situations, where frequently some key parameters can simply be left to whatever works (let the camera decide).
The new Canons have an Fv mode which tries to get around that by automatically setting shutter/aperture/iso, but you can override any 1 or even all three. Maybe I’ll try it someday, but I’m an Old Dog.
It does work well when I have a fixed aperture lens & want a specific speed.
