Sigma dock (for 50mm)

[Jesse]

Alright, so I bought the dock. Now someone tell me what to do!

Stupid question but of course there's no answer anywhere: if the lens is backfocusing (i.e. focusing behind the focus point), do I go + or - ?

Also are all versions from the same year different? If not, is there one way to do it? i.e. I have a 5D3 and a 2014 version, can someone just tell me what to set it to?

 

[Jesse]

??

 

[DominoDude]

Alright, so I bought the dock. Now someone tell me what to do!

Stupid question but of course there's no answer anywhere: if the lens is backfocusing (i.e. focusing behind the focus point), do I go + or - ?

Also are all versions from the same year different? If not, is there one way to do it? i.e. I have a 5D3 and a 2014 version, can someone just tell me what to set it to?

Did the dock come with some sort of a manual? Did you read it?

 

[PVS]

Pretty much everything you need to know:
http://www.lensrentals.com/blog/2013/06/sigma-optimization-pro-and-usb-dock

 

[Jesse]

The manual is like 3 sentences that tells you to download a program. Nowhere does Sigma tell you how to measure for focus adjustments.

That article still barely goes into detail.

 

[Viggo]

Go minus for backfocusing to bring the plane of focus closer.

There are 4 distances you need to calibrate and set. Reikan Focal is highly recommended, but a simple ruler and chess board will work. Spyder LensCal is another one.

Since the AF is the most stable with the Art lenses, shoot at least 10-20 shots at each distance.