Hi, Is it possible to connect the Raspberry Pi Camera module or a 5MP Mega pixel Camera OV5642 Module to an Arduino Uno without using an Arducam shield (is there any smaller shields instead?). Thank You, G
Probably not in any practical way. The main obstacle is the very limited amount of RAM to copy the image into.
There is a very long thread about the use of the OV7670 camera, which it probably would be useful for you to read.