Ju 88 C-2 and C-4 diference?

[ArtieBob]

RAF Intelligence Summary Nr. 301, Sunrise 19.12.41 to Sunrise 29.12.41 included translation of Ju 88 subtype identification originating from a captured handbook. This listed the differences as follows:
C-1 No difference in airframe and powerplant between C-1 and A-1. Crew of 3, increased fixed armament, no bombing or diving equipment.
C-2 Similar to C-1 but with increased span.
C-3 Similar to C-2, but with BMW 801 engines.
C-4 Similar to C-2, but with auxillary reconnaissance equipment. (WAM-dwg. of Ju 88 C-4 indicates a 50/20 camera mounted aft of bomb bay and a 20/30 camera in the cockpit)
C-5 Similar to C-3 with no Bola, crew of two, two machine guns mounted in a pod under the rear bomb bay.

However, all Ju 88 fighters prior to C-6 apparently were converted after coming off the line. Thus in my mind, it is not certain that they were all converted to the same specifications. Like many other examples of Luftwaffe equipment, exceptions are the rule, very little was truly definitive.

Best Regards,

Artie Bob