Hi Michele,
you find a nice description for first steps here:
http://naranja.umh.es/~atg/tutorials/VGIV-MeasuringCellsImageJ.pdfOn page 8, you will find help with the different measurements ImageJ can do.
Best
Volker,
2010/11/3 Michele Rotyliano <
[hidden email]>:
> Have photos of bioluminescent bacteria cultures that we want to compare the light intensity between the cultures - new to the program, looking for some guidance on how to accomplish with ImageJ. Thanks.
>