I just purchased a Sigma 150-600mm C (Contemporary) lens and realize that Lightroom 5.7.1 does not have that lens profile. It does have the 150-600 S lens profile. I tried to use that on my iMac, running Yosemite, but the profile does not remove the vignetting that my lens creates. I see that DNG Raw conversion 9.0 has the profile, but do not know how to update the raw conversion in my Lightroom 5.7.1 software. Can anyone help?