Is this Legend all hype? - Sigma 40mm F1.4 DG HSM ART Astrophotography Review

I'm somewhat late to the party on this one, but to be fair there weren't any 60MP cameras to throw this lens at when it came out! So: how does this lens perform nearly 7 years after it's release? Sigma 40mm F1.4 DG HSM ART -- Tracked samples were tracked using the Fornax Mounts LighTrack II. (Fervent Astronomy is Fornax's North American Distributor): https://ferventastronomy.com/Products... -- Vetting a lens for astrophotography can be a bit of a pain, as most reviews don't dive deep into lens performance when used on the night sky. As such, I have been compelled to create lens reviews specifically for astrophotographers, which dig into lens performance in somewhat exhaustive detail - all to uncover how the lens performs on the stars. -- To download samples and read up on some of the information discussed in this video, just follow this link: https://ferventastronomy.com/Reviews/... (please respect my copyright and do not distribute these samples or otherwise use them for any purposes other than personal assessment of this lens' characteristics, thanks!) -- Into astrophotography and looking for some gear? Check us out: https://ferventastronomy.com/Products/ -- Clear skies!