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5.35.7 HANDHELD TWILIGHT
An impressive feature is the Handheld Twilight Mode (which is extremely
similar to the Multi-Frame Noise Reduction (MFNR) described
previously). Both use a similar technique to HDR, in that the camera takes
multiple sequential images at high ISOs and then merges them in the
camera. Merging several identical frames in order to reduce noise is an old
established astrophotographer’s trick; only this time Sony has made it
insanely easy by not requiring a tripod. Even a shaky hand can now take
high-quality nighttime shots without a problem!
ISO 800 ISO 800 HHT
Figure 5-82: Handheld twilight allows you to take a sharper low-light picture without
needing a tripod. It takes four consecutive exposures, aligns them, and then merges
them in-camera, providing you with a lower-noise image than you could otherwise
attain.
