Pentax MX/ME Super is approximately the same size. The MX is fully manual while the ME Super has manual and aperture priority mode. Both are manual focus and manual advance/rewind unless you add a motor.
This shows just how small a Pentax MX/ME Super is with a 40mm pancake lens compared to a point and shoot and other cameras.
I don't have the Contax but it may be similar in size to my Nikon 35Ti
The Olympus Epic provides excellent results, is fully automatic and pocketable.
Yes I’m going to get this
The Nikon 35Ti and Pentax MX+pancake lens are jacket pocket size but are much heavier then the the Epic.
Pentax prime lenses will not be the reason you get unsharp pictures.