Upload & Sell: On
| p.4 #17 · Strange front-focusing problem with Sigma 35/1.4 |
Ernie Aubert wrote:
With the lens that you've now sent back, did you try ignoring what Focal said and attempt the manual, trial-and-error method of accomplishing MA? Someone else reported (in this thread? I don't remember) bogus behavior from Focal. I'd be interested to know how you fare without employing Focal...
Yes, I dialed a +20 in and that helped. But, the front-focus was too extreme to be corrected with even +20, and second, it didn't seem to front-focus much at all at longer distances, so a +20 actually made it back-focus in those situations. That's probably why FoCal was returning a -1. I should have tried calibrating with FoCal at 3 feet to see if it picked up on the front-focus, but since I already knew I was returning it I figured there wan't much point.
This describes my Sigma 35 1.4 as well, to a tee. +20 isn't enough, and I'm having a hassle getting it swapped out from the seller.