black spots

[abdullah.malallah]

i am shooting studio portrait with my h4d-40 , in the result i see  some small  black spot ,,

[HLArt]

i am shooting studio portrait with my h4d-40 , in the result i see  some small  black spot ,,

Hi abdullah, a picture where this problem is visible would be helpful for analyze.
Kr Herbert

[Juan Pablo merchan]

Sensor cleaning?