ARRI Forum

I recently purchased an Arri Alexa Classic off of eBay. The camera arrive today and I'm noticed a strange noise pattern in the blacks and shadows. I worried I may have got a faulty Alexa, the noise is pretty bad. Could this be fixed with a sensor calibration or factory default reset? Please check the attached image.

Any help is appreciated, thank you!

Dear Aaron,

Thank you for reaching out, our Service Team will get back to you by e-mail.

Best regards,
Andreas Berkl

P.S. My initial thought was LED lighting. This can, when using pulse width modulation, produce similar patterns. I am not sure however if this is daylight or interior with electric lighting.