Hello i have recently bought a laser Its a Samita Laser from turkey i work on granite and i have had a problem when the laser engraves the photos it leaves dark lines as you can se in the photos can someone please help me why does this problem happening

Finished Creations
#1

318034706_978044360231091_8474823258753025704_n
318034706_978044360231091_8474823258753025704_n1200×1600 207 KB

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320735219_1653449918446133_8605041046009570475_n1200×1600 125 KB

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325531254_875168780467372_6384477870766870927_n1200×1600 251 KB

#2

The cause is usually an incorrect focus or dirty optics. To fix this, simply clean the lenses and adjust the focus until the lines disappear.

#3

what settings are you using in LB, the result except the black line seems really detailed and precise !

Thank you