I'm mounting a Hasselblad Sonnar C 150 mm f4 on a 35mm sensor (43mm diagonal) camera.
What is the calculation to get the new angle of view and equivalent focal length? Does this also affect the aperture? for example if the 'crop' factor' ends up being 2, would I end up with a 300mm F2.0 lens?
So far, the answers are:
- No change. It's a 150mm and F4.0
- It'll be a tele lens at about twice length of ~270mm, same aperture (or tele at F7.3)
- It'll feel shorter length at about half ~80mm, half the aperture F2.0
I'm still in the dark (pun intended, twice) as to what's up.
The two pictures below, first was shot on the 150mm F4 blad mounted on 35mm sensor.
The second picture was shot using the 55-200mm APS (crop) lens on the 35mm sensor @ F5.6 and zoom at ~105mm. The shutter for the second picture had to be two stops slower to get the same (underexposed) picture.