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Well...
#31
Quote:Well, it's a bit abusing the lens. Being portrait specialist, I think the best proportions in distance for headshots are different from the ones we see in the picture. I don't want to defend an insanely priced product of China, but with some effort you can find weak spots in each lens design.
   Weak spot sometimes are viewed as "characteristics"  Rolleyes

 

Quote:I think you are not taking into account lens design? The Canon lens is a very old design, going back to the end of the 1970's. That the current Canon with basically the same design, just a bit bigger back element, vignets a lot, it still vignets  less than the smaller mount diameter Canon FD relatives. There is more than one variable in vignetting.

The 55mm f1.2 lenses I have (you have) also a lot.

 

So yes, the 105mm f1.4 Nikkor vignets a lot due to the narrow mount's design limits. The Samyang 85mm f1.2 Vignets less than the Mitakon due to the wider mount diameter. 
 I'm not really taking anything into account BC, other than how some situations can turn things on their heads!   Big Grin

   Of course the larger Canon flange diameter gives greater freedom to large aperture designs and why we have no Samyang F1.2 in the F mount, that's why the situation with the Nikon version Mikanon is so so fun, it breaks the rules.

 

  I love a spanner in the works of the rules of optics...........

   

                ...........and of course irony and cynicism and nonsense in general is probably what I enjoy the most in my old age,  I'll leave optical logic, good reasoning and being sensible to the young!  Tongue

Dave's clichés
  


Messages In This Thread
Well... - by mst - 01-21-2017, 11:57 PM
Well... - by JJ_SO - 01-22-2017, 12:36 AM
Well... - by borisbg - 01-22-2017, 03:52 AM
Well... - by davidmanze - 01-22-2017, 08:11 AM
Well... - by davidmanze - 01-22-2017, 08:24 AM
Well... - by mst - 01-22-2017, 08:51 AM
Well... - by JJ_SO - 01-22-2017, 08:54 AM
Well... - by mst - 01-22-2017, 09:15 AM
Well... - by Klaus - 01-22-2017, 09:53 AM
Well... - by mst - 01-22-2017, 10:27 AM
Well... - by Rover - 01-22-2017, 10:45 AM
Well... - by JJ_SO - 01-22-2017, 11:32 AM
Well... - by Brightcolours - 01-22-2017, 11:59 AM
Well... - by mst - 01-22-2017, 12:16 PM
Well... - by Rover - 01-22-2017, 02:56 PM
Well... - by Brightcolours - 01-22-2017, 03:08 PM
Well... - by Rover - 01-23-2017, 08:33 AM
Well... - by Brightcolours - 01-23-2017, 09:56 AM
Well... - by mst - 01-23-2017, 12:31 PM
Well... - by Brightcolours - 01-23-2017, 12:41 PM
Well... - by mst - 01-23-2017, 01:07 PM
Well... - by Brightcolours - 01-23-2017, 01:30 PM
Well... - by mst - 01-23-2017, 01:43 PM
Well... - by JJ_SO - 01-23-2017, 01:50 PM
Well... - by Rover - 01-23-2017, 08:16 PM
Well... - by davidmanze - 01-23-2017, 09:26 PM
Well... - by davidmanze - 01-23-2017, 09:35 PM
Well... - by JJ_SO - 01-23-2017, 09:59 PM
Well... - by Brightcolours - 01-23-2017, 11:46 PM
Well... - by JJ_SO - 01-24-2017, 05:44 AM
Well... - by davidmanze - 01-25-2017, 04:22 AM
Well... - by JJ_SO - 01-25-2017, 07:07 AM
Well... - by Brightcolours - 01-25-2017, 08:40 AM
Well... - by mst - 01-25-2017, 08:48 AM
Well... - by mst - 01-25-2017, 08:50 AM
Well... - by Rover - 01-25-2017, 12:19 PM
Well... - by JJ_SO - 01-25-2017, 12:31 PM
Well... - by mst - 01-26-2017, 11:49 AM
Well... - by Brightcolours - 01-26-2017, 12:08 PM
Well... - by mst - 01-27-2017, 03:10 PM
Well... - by JJ_SO - 01-30-2017, 11:07 AM

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