Can i split average of many photos.

[nCaine]

Hi. 

I need to average(median) around 50 photos.

The problem is im on super old hardware, x5450 xeon with 8gb od ram. GPU GTX 650ti. 200gb ssd scrach disk. 

When i try to stack and average, it will crash Photoshop at some point.

I can average 10 photos at max.

The questions.

Can i average by 10, and then average the 5 resulting images? 

Will this give me the same quality that if i done them all at once?

Sorry for my english. 

[davescm]

Mathematically, if you keep the groups equal sized i.e. each contains the same number of images, what you propose will work to give the median (i.e. middle) value

Dave

[nCaine]

Thx.

[c.pfaffenbichler]

You may want to work in 16bit to minimize quantization.