Hi Shahi ,
Some of My Inputs Were Here ->
viewtopic.php?f=10&t=34749 .Also i would like to add my experience .
1 : Data Recovery Generally Needs 45X Max Magnification " You Can Stretch it To 70X "
2 : A Proper Microscope Is Required For Proper Working And Platter / Head Inspection
3 : Camera On a Microscope is More For Adding Images on Social Media .
4 ; If you buy a microscope With BoomStand What Would Be Ideal .Some Updates Were Here ->
www.facebook.com/chandigarhdatarecovery