We made a large ( approximately 1 \degr \times 1 \degr ) r ^ { \prime } -band imaging survey of the central regions of the two nearby clusters of galaxies , Abell 1367 and Coma .
The data , presented as a catalog , are used to construct the r ^ { \prime } -band luminosity function ( LF ) of galaxies in these two clusters , by subtracting the Yasuda et al .
( 2001 ) galaxy counts from our cluster counts .
Our Coma luminosity function is consistent with previous determinations , i.e .
providing a faint end slope \alpha = -1.47 _ { -0.09 } ^ { +0.08 } , significantly steeper than the one we find for Abell 1367 ( \alpha = -1.07 _ { -0.16 } ^ { +0.20 } ) .
The counts in Abell 1367 show a relative minimum at r ^ { \prime } \approx 19 , followed by a steep increase faintward .
The difference between the two clusters appears significant , given the consistency of the experimental conditions in the two clusters .
Whereas for Coma we find a significant increase of the slope of the LF outwards , no such effect is found for Abell 1367 .