Comment by hmsp

Heat buildup cause a lot of noise to appear in the image.

New cameras are overcoming this with fans. Look at the just realeased Sony fx30 or the Panasonic S5ii. Both have built in fans to aid in cooling getting them unlimited record times.

I shoot with a sigma FP that has no recording limit and no fan. It is designed as basically a giant heat sink. It also has some of the lowest amounts of noise of any camera.

I’m sure the eu thing comes into play in hitting that 30 minute mark but it’s probably a convenient choice of time limit when solving the heat buildup issue.

FWIW I’ve followed film cameras closely for years and have never heard of this EU law while all reviews etc talk about heat buildup because it is so detrimental to image quality.