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Sigma 35mm 1.4 / D800 e AF issues

L

Lightleak

New member
Ok, sounds like a plan. The auto focus on this one actually works very well, I nailed the focus at f1.4 on all shots when I challenged it in the shop. I see the veeeery slightly stronger softness on the right side you are talking about, but I can hardly imagine there is a better one out there. You should keep this one. However if you don't, you have a buyer, haha.

I will report as soon as I have checked the second copy.

Best regards!
 
tashley

tashley

Subscriber Member
Oh I'm keeping it! No one is getting this one! Now I just have to think of a name for it. Just trying to think of something appropriate and non-blasphemous for a miraculous baby :D
 
Quentin_Bargate

Quentin_Bargate

Well-known member
Tim

Incidentally, may we assume your new Avatar was taken the moment you first discovered a problem with your original Sigma F/1.4? :)

I don't have your patience for testing, unfortunately, but glad you do and that you have found your near-perfect Sigma. The lesson clearly is that Sigma's quality control has yet to catch up with their first-class design capability.
 
johnnygoesdigital

johnnygoesdigital

New member
Many variables can effect a lens characteristics, but I for one am glad I didn't turn this lens away based on user reports or hype on QC. Simply dropping a box in transit can be the culprit. This is to date, the finest wide lens i've used on the D800, with virtually no lens AF adjustment. I eagerly await the release of the 120-300 f2.8.

Sigma 35mm 1.4DG HSM
 
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M

MarekGlaser

New member
My copy of the lens is great except for the outer focus issue on the D800.

I just tried it out on my D4 using FoCal 1.9 and the center point is working great giving me a AF micro-adjustment value of +4. With the far left focus point however it is predicting a value of -40. Whether testing with FoCal and a test target or portrait shooting, the outer focus points are not usable.

What I'm wondering now is this something that a firmware update will be able to correct or will I need to return it and try for another copy.
 
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