Dark noisy foreground

When I shoot the milkyway or stars at a very dark place the foreground is actually darker than the sky, so when I expouse to the sky the foreground gets dark and noisy
heres an example -

I take a sky exposure of 25-30 seconds, and then a foreground exposure (or a few focused at different points) that are multiple minutes long. Then I hand blend them using layer masks in photoshop.

jsecordphoto wrote in post #17091848
I take a sky exposure of 25-30 seconds, and then a foreground exposure (or a few focused at different points) that are multiple minutes long. Then I hand blend them using layer masks in photoshop.

How about your ISO for the foreground? Do you stay at 100 to have as less noise as possible?
How about your aperture? Do you go down a few stops or do you stay (almost) wide open?

jsecordphoto wrote in post #17091848
I take a sky exposure of 25-30 seconds, and then a foreground exposure (or a few focused at different points) that are multiple minutes long. Then I hand blend them using layer masks in photoshop.

ah Im not that good at photoshop, is it difficult to do it?

virginie24jb wrote in post #17105966
How about your ISO for the foreground? Do you stay at 100 to have as less noise as possible?
How about your aperture? Do you go down a few stops or do you stay (almost) wide open?

I dont shoot at iso 100 in the first place, more like 6400/12800. If I will switch to 100 the foreground will be competley black. And I stay at the widest aperture also (to gather more light)

There are lots of guides on youtube and around the internet on layer masking. Is it easy? sort of. It only took me a few minutes to figure out the basic process, but I'm constantly learning how to better use them.

For my foreground exposures, I usually do iso1600, f2.8 or f4, 8-10 minutes. On the 6d iso1600 is pretty clean, not sure what camera body you are using.

jsecordphoto wrote in post #17110177
There are lots of guides on youtube and around the internet on layer masking. Is it easy? sort of. It only took me a few minutes to figure out the basic process, but I'm constantly learning how to better use them.

For my foreground exposures, I usually do iso1600, f2.8 or f4, 8-10 minutes. On the 6d iso1600 is pretty clean, not sure what camera body you are using.

thanks for the reply
8-10 minutes exposure?? that would make alot of noise too isn't it?
and i'm using the 6D too

At iso1600 the 6d will produce pretty clean images. Turn on your long exposure noise reduction, and be prepared to sit around a bunch. I typically spend about an hour for each composition