Long exposure / Hot pixel removal in Photoshop CS2

DSLRs have the capability to take amazing night shots. Sometimes you will get so-called hot pixels in your images. This technique is useful for long exposure shots (time larger than 2s) and with cameras that doesn't handle hot pixels efficiently or if you turn of the long exposure noise reduction feature to do this tecnique on your own manually.
This video show _a_ hot pixel removal technique using an image and a dark frame shot with same duration and same iso sensitivity. Basically, the technique uses the dark frame as a hole-mask to shine a median of neighbour pixels over the hot pixel areas to mask them out.
Its a bit lenghty. All the steps can ofcourse be put into an Action.

Category:

Howto & Style

Tags:

• hot
• pixel
• removal
• dark
• frame
• Photoshop
• CS2
• night
• photography

[bragtern]

if you shot in raw, this wouldn't be necessary.

[bbytew]

@bragtern True, but for older cameras, like Nikon D100, this method is helpful.

[MrMaaris]

Thank you! Very good :)