Dark images look dull
Modern cameras, digital or film, have sophisticated exposure metering devices built-in which achieve practically always a perfect exposure. However, "perfect" means in most instances only that the average exposure of an image is right on target. Many of your images do benefit little from this "correct averaging" except if you take pictures of gray carpets or close-ups of elephants. A bright background will often make your main subject too dark and a night sky in the background will make your subject too bright.
With the help of sophisticated curves adjustments, we can change the exposure of the entire image or of certain areas. We can also restrict the brightness changes to certain brightness levels, say you want to have all midtones brighter without making the dark areas or bright areas any brighter. Or, all of the above as a mixture ...
Costs for these services
Effort depends on the quality of the provided image material and on the requirements for the output. Please contact us for an estimate for your individual needs.