I have a question about my Pentax 645D camera. I bought it about a year ago and still can't understand if it's a defect and I have to fix it or it's just my missunderstanding.
Let's say i need to shoot a valley with shutterspeed 1/100, aperture F22 and with 3 shots bracketing, value 2.0. I use M mode. What I need to have is three images: 1\100 F22, 1\400 F22, 1\25 F22.
The problems are: 1. my camera changes not only shutterspeed but aperture as well by it's own way. it gives me f11, f14,f22 or whatever while I need to keep it strictly on 22.
2. when I try to set my brecketing parameters being on M mode by holding pressed EV compensation button #3 and turning rear e-dial swither #15 I can't go further than f16 and my first shot of the series gonna be with f16.
I studied manuals from head to toes but couldn't find any answer.
So my question is how can I use brecketing with complete manual mode and aperture paramaters that I need without any camera's auto interference and restrictions. Thank you for reading!