In this video I shows how you can clean out the dust behind front element.
Sigma 24-70mm f/2.8 DG DN.
You will need "ph00" screwdriver.
I have used white stripes only for mark original position of parts.
ps.
Don't panic, a few dust particles not affecting your photos quality.
Негізгі бет lens Sigma 24-70mm f/2.8 DG DN . How to remove, clean dust from inside.
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