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p.1 #3 · p.1 #3 · Buy new generation EOS if you buy 200-400L | |
Renier1 wrote:
I AFM tuned my 200-400 L today with the dot tune method on 3 camera bodies. The 5D MK 3 was a pleasure but took some time. The lens registered 4 different profile on the camera with the wide and telephoto individual values.
200-400 Bare: W +1, T +4
200-400 EXT: W +1, T+3
200-400 1.4 TC: W +4, T +8
200-400 EXT + 1.4 TC: W +5, T +/- 0
So works out very well with 4 profiles and 2 values each. But I bought a used 1D MK iv to use with the lens also for the extra reach but here is where the gremlins start to come out.
The lens only registers 2 profiles on this camera body, one for the 200-400 bare and with the internal extender. Only one profile. The other profile is registered when the external 1.4 TC is attached so irrespective of the internal extender being engages or not only one profile again. In both these profiles you only get to enter one value as there is no Wide or Tele value only one value for the lens. So you want to see the gremlins well here they are.
200-400 Bare: W 0, T 0. This worked out nicely but this is combined with the profile for the internal EXT.
200-400 EXT: W -3, T -8. So only one of the four values can be chosen range of 11 points and the range of in tune focus dots during the process is a range of 15 points. What to do.
200-400 + 1.4 TC: W -3, T +/-0. It is ok again the range of in focus confirmations are 15 points.
200-400 EXT + 1.4 TC: W -5, T -8. The range only 12 points this time for in focus confirmation, again only one of the four values can be used. Now lets say I attach the 1.4 TC because I want the reach, the value for the Tele end ranges from 0 to -8 with a 12 point spread of in focus confirmations in camera. Not an ideal situation.
The 7 D also only registers 1 profile with EXT and without all one profile. The amazing thing is that the four tested values on the 7D for W and T for the bare lens and with the EXT engaged is a range of 0 and +1.
Unfortunately the 1D MK iv was not as cooperative. Therefore to get the best from this lens you need the 1DX, 5 D3 or the 6D as I understand it might have the same registry in the AFM adjustments as the other 2 new camera bodies.
Renier ...Show more →
Very informative, thanks for sharing. I am not surprised that there are hidden traps in very new gear pushing the consumer to use the latest cameras. Glad that I am not interested in any of the new gear mentioned here.
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