between a top wall 32 of upper housing portion 18 andslanting end wall 34 of the lower housing portion 16 the accessory clip 14 is releasably locked into position by a flexible and resilient cantilevered release member 36 for the sake of clarity the positive vignetting accessory 10 is shown in fig1 in a position above the camera 12 it is to be understood however that when in use the positive vignetting accessory 10 is located directly in front of the component module 20 the positive vignetting accessory 10 includes a flash diverting formation 38 a light piping plate 40 and a light piping arm 42 connecting the diverting formation 38 and the light piping plate 40 the light piping arm 42 is shaped to connect the light diverting formation 38 to the light piping plate 40 without obstructing the passage of scene light to the photocell window 26 and viewfinder window 28 as shown in fig2 the flash diverting formation 38 has a polished light transmitting i e transparent light entering surface 44 which covers only a portion of the electronic flash 26 when the positive vignetting accessory 36 is in an operative position the light piping plate 40 has a central polished and transparent cylindrical light exiting surface 46 defining a circular exposure aperture 48 the size of the aperture 48 determines the size of the resulting principal image and the area of a resulting photo which is a positive vignetted shading or border more importantly the light piping plate 40 has a polished light transmitting i e transparent light exiting rear surface 50 and a pair of attachment members 52 the attachment members 52.