DCG Lines

[Dutchelm05]

Not all the time but somethings I get DCG holograms with lot of horizontal lines. Like a mm or so a part.
Can anyone tell me where the come from?
Is it a good thing?
Sorry the photos cannot see then clearly.
I have a hologram from Dave (friends forever) which also has them.
It can only be seen in certain angles.

Thanks all wise ones!

Tony

[dave battin]

Tony i think its a polarization issue or a reflected interference between the front and rear surfaces of the film (mold coated), for my hologram, the polarizing could have been out as the plate was located 20 feet from the 1/2 wave rotator (long throw holography) ................ and im becoming quite blind as i age!