It does help. I've looked at the 18-35 Sigma f1.8 before just have not wanted to pull the trigger because of the price.
Is there a big difference between f3.5 and f2.8 for astro? My 18-135mm is f3.5 at the 18mm end so is that really a big gain?
Good day, I'm looking for my next landscape/astro lens and looking for suggestions from what you use. I use a Canon APS-C sensor and want...
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