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  Previous versions of timballic's message #11009693 « 20/21mm on FF..........yet again! »

  

timballic
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Upload & Sell: Off
20/21mm on FF..........yet again!


Now top right. The softness of the OM is more due to lack of depth of field than lack of resolution. These were focussed at 12' on the central stones.

100% 17-40L @ 20mm
Best sharpness/dof in distance, notice leaves on distant tree.


100% Voigt 20/3.5
Notice especially how the leaves of the distant tree are indistinct/mushy compared with the 17-40 and the OM


100% OM 21/2
Softness on "HORSES" more a depth of field problem than resolution.Slightly worse purple fringing of the three. However where it is in focus, ie on the honeysuckle blooms, it is even sharper than the 17-40L in this area.



Oct 02, 2012 at 11:33 AM
timballic
Online
Upload & Sell: Off
20/21mm on FF..........yet again!


Now top right. The softness of the OM is more due to lack of depth of field than lack of resolution. These were focussed at 12' on the central stones.

100% 17-40L @ 20mm
Best sharpness/dof in distance, notice leaves on distant tree.


100% Voigt 20/3.5
Notice especially how the leaves of the distant tree are indistinct/mushy compared with the 17-40 and the OM


100% OM 21/2
Softness on "HORSES" more a depth of field problem than resolution.Slightly worse purple fringing of the three. However where it is in focus, ie on the honeysuckle blooms, it is sharper than the 17-40L in this area.



Oct 02, 2012 at 11:33 AM
timballic
Online
Upload & Sell: Off
20/21mm on FF..........yet again!


Now top right. The softness of the OM is more due to lack of depth of field than lack of resolution. These were focussed at 12' on the central stones.

100% 17-40L @ 20mm
Best sharpness/dof in distance, notice leaves on distant tree.


100% Voigt 20/3.5
Notice especially how the leaves of the distant tree are indistinct/mushy compared with the 17-40 and the OM


100% OM 21/2
Softness on "HORSES" more a depth of field problem than resolution.Worst purple fringing of the three. However where it is in focus, ie on the honeysuckle blooms, it is sharper than the 17-40L in this area.



Oct 02, 2012 at 10:19 AM



  Previous versions of timballic's message #11009693 « 20/21mm on FF..........yet again! »