You just got that great shot of the grouper that you’ve been hoping for. Back topside and excited to see the result, you download the picture and display it full screen. What a great shot! Except, of course, for the all those bright spots you never saw until now. Your strobe has reflected off the particles in the water and ruined everything. Damned backscatter.
What to do? If you’re a power user of image manipulation software like Photoshop, you can spend a lot of time working on the image to get it back to what you saw, but most of us aren’t likely to go that route. Even if you have the means to do the job, the touchup is tedious at best, so usually, the grouper is banished to the dark depths of the hard drive, or (gasp!) deleted forever.
Yes, it’s best to prevent the problem in the first place (get in close, turn the flash off when more than a few feet away, etc.) but that won’t help you now. However, there are some additional things you can do to salvage the shot.
- You can minimize the effect by turning off sharpening. No point in accentuating the appearance of the particles, and since they are usually bright spots against a darker background, the sharpening process will do just that.