HP R507 - Manual (Page 171)

Appendix C: Specifications 171
Memory Capacity
The following table lists the approximate number and average
size of still images that can be stored in the internal memory in
the camera when the camera is set to different I mage Quality
settings available in the Capture Menu .
NOTE Not all 32 MB of internal memory is available because
some is used for internal camera operations. Also, the
actual file sizes and number of still images that can be
stored in the internal memory in the camera or on an
optional memory card will vary, depending on the content
of each still image.
4MP 11 images (2.4 MB each)
4MP (default) 22 images (1.2 MB each)
2MP 45 images (600 KB each)
VGA 265 images (100 KB each)