Comparison of Wide Angle Lenses

I used three different lens,
my Spiratone 18mm thread mount lens,
my Phoenix 19-35mm,
MC Zenitar K2,8/16 Fisheye
Same position all three shots

Wide angle camea lens test
Pentax SMC F2 35mm
 
 

Wide angle camea lens test
Spiratone 18mm thread mount wide angle
 
 

Wide angle camea lens test
Russian MC Zenitar 16mm fisheye
 
 

Wide angle camea lens test
Spiratone 18mm thread mount
 
 

Wide angle camea lens test
Phoenix 19-35mm
 
 

Wide angle camea lens test
Russian MC Zentar 16mm fisheye