The following warnings occurred:
Warning [2] count(): Parameter must be an array or an object that implements Countable - Line: 895 - File: showthread.php PHP 7.2.24-0ubuntu0.18.04.8 (Linux)
File Line Function
/showthread.php 895 errorHandler->error

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
I've tested the Sigma AF 30mm f/2.8 DN A - "missing" CA?


Today I've run a comparative test of the Sigma AF 30mm f/2.8 DN A (not EX) against my Nikkor AF-S 35mm f/1.8G (with a NEX-6 and a D5100). There's something I don't understand as I don't see any chromatic aberration with the Sigma - see the image below, taken from the border. It's the screenshot from a Lightroom 5 compare view.


Of course, I've checked that the "Enable profile corrections" and "Remove chromatic aberration" are both disabled (actually the raw files are straight after import, no post-processing changes applied; the Nikkor image sample actually shows the CA).

Does the NEX-6 run some software correction even for raw files? I mean: I know that modern cameras do "something" before producing raw files, but also CA correction?


Sony a6300, Sony a6000, Sony NEX-6, Sony E 10-18mm F4 OSS, Sony Zeiss Vario-Tessar T* E 16-70mm F4 ZA OSS, Sony FE 70-200mm F4 G OSS, Sigma 150-600mm Æ’/5-6.3 DG OS HSM Contemporary, Samyang 12mm Æ’/2, Sigma 30mm F2.8 DN | A, Meyer Gorlitz Trioplan 100mm Æ’/2.8, Samyang 8mm Æ’/3.5 fish-eye II | Zenit Helios 44-2 58mm Æ’/2 
Plus some legacy Nikkor lenses.

Messages In This Thread
I've tested the Sigma AF 30mm f/2.8 DN A - "missing" CA? - by stoppingdown - 11-05-2013, 08:43 PM

Forum Jump:

Users browsing this thread:
1 Guest(s)