Adjusting the Zeiss Sonnar

[tbarker13]

Advertisement (gone after registration)

I just purchased a 50 Zeiss Sonnar to use as a softer portrait lens. (I am getting a 50 lux with my 30 percent discount).

I asked Zeiss about their offer to adjust the lens to minimize the focus shift at f/1.5. They say it will take about 10 days to make the adjustment, once they receive the lens. And it is free as long as it is under warranty.

They said it would focus more accurately in the f/1.5-f/2.0 range. But that the shifting would be more pronounced below f/2.8.

From Zeiss:

"When you stop down to f/2.8 or smaller, there will be visible a slight focus shift, but sharpness will be covered within the depth-of-field. In practical use, after the adjustment the focus shift will not play an important role anymore."

 

What I am wondering is whether the adjustment would affect the character of the lens, bokeh, etc. I'm awaiting an answer from Zeiss on this.

But what do you guys think? Does that shifting feature have any impact on the way the lens draws? Aside from sharpness of focus, I mean.