Hi, what do you mean by HDR process? Do you mean the built in HDR feature or the auto bracketing setting which allows post HDR processing? Depending on which one you can or cannot delay. Auto bracketing excludes the 10s timer option which is in the same shutter option menu. Use post HDR post processing! It allows you much better tweaking for all image parameters. For a couple of bucks you can find remote triggers compatible with your D5100: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias=electronics&field-keywords=eza-n3
Comments
Auto bracketing excludes the 10s timer option which is in the same shutter option menu. Use post HDR post processing! It allows you much better tweaking for all image parameters.
For a couple of bucks you can find remote triggers compatible with your D5100:
http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias=electronics&field-keywords=eza-n3
http://forums.cameratips.com/discussion/comment/3248#Comment_3248