ZM Sonnar 50mm Front Focus?

[drjoke]

I hope I got the new batch with front focus fixed. I mis-focused on some of the pics though -- I hope it's not the front focus. These pictures are taken wide-open or very nearly so.

http://www.flickr.com/search/?q=zm%20sonnar%20400x&w=70652943%40N00

 

[the_jim]

Beautiful! Well done.

Front focus or not, who cares?

If it ain't broke, don't fix it.

I can't believe no one else has responded to this.

 

[ZeissFan]

I don't see anything amiss here. What was your point of focus?

 

[PetarDima]

Very nice shots, face is in focus, background with dreamy bokeh 🙂
you are lucky man to have that lens! If you don't mind, this photo in B&W,
simple conversion + 20% contrast:

 

[the_jim]

Whoa! looks great in B/W

 

[40oz]

on a lens like that, you're going to mis-focus occasionally regardless. Those shots look great.

 

[adonf]

I hope I got the new batch with front focus fixed.

You can't "fix" focus shift. You just decide which apertures will be affected by it : you can only avoid it at one aperture at a time. Apparently this aperture has been moved from 2.8 to 1.5. Just an ajustment made by Zeiss for those who never ever stop down 😛 (should you want to do so, you can always decide to change it)

Nice pictures, by the way. Enjoy your lens 😉 (or send it to me for free :angel: )

 

[elude]

What about the lens stopped down at /8 etc. Doest it focus well to infinity?

 

[kshapero]

What about the lens stopped down at /8 etc. Doest it focus well to infinity?

Yes, In my experience focus shift only happens on this lens at about 2.8 or less.

 

[ferider]

The shift happens at least up to f5.6 and (until then), corresponds to
half the DOF. Center shifts a little different than corners. Earlier lenses are
optimized to have min. center shift at f2.8, newer at f1.5.

You can compensate using the DOF scale.

Roland.