>>3913985Bokeh is qualitative. You can't have 'more' bokeh. Its the quality (jittery, smooth, creamy etc). What people probably mean is 'depth of field'.
Larger formats don't have 'deeper depth of field' per se, but they typically allow you to use longer focal lengths at the same subject distance whilst maintaining eq. FoV and framing. I can take a headshot from say 1.5m with a 35mm(DX) or 50mm(FX) and get largely the same framing. But, all else being equal, I am using 50mm on my FF body and thus will have a narrower depth of field at the same apertures.
To get 'equivalent apertures' I think you just multiply the aperture by crop factor (which seems unintuitive given the logarithmic(?) nature of aperture to me so I could be wrong). I.e a 35mm 1.8 lens on a crop body will produce similar DoF to 50mm ~f2.8 on FF (1.8 [f] x 1.5 [crop factor] = 2.7).
Checking the above calculations in an DoF calculator finds that the calculations are close enough for me (can't insert custom f value to be sure).
Note there will be qualitative differences in the bokeh. Some say that the 'roll off' (the rate that DoF changes) is also different. Make your own tests and confirm but for my purposes I rarely if ever see much of a difference.
