HDR and ISO - DPChallenge Forums

Tamron 16-300mm Di II VC PZD MACRO w/Canon Nikon mount

05/23/2008 09:57:47 AM · #1

When you are doing HDR, do you change your ISO to avoid noise??

Strikeslip

Canon EOS-5D

Canon EF 100-400mm f/4.5-5.6L IS

05/23/2008 10:01:07 AM · #2

i do

Tamron 16-300mm Di II VC PZD MACRO w/Canon Nikon mount

05/23/2008 10:04:15 AM · #3

I was thinking that maybe that would be the case. I noticed when I merged them, I am getting noise in teh clouds mostly.

What ISO are you putting on them???

05/23/2008 10:05:36 AM · #4

I always use ISO 100 ... assuming you are on a tripod there is not much reason not to ... unless you have a moving subject?

Tamron 16-300mm Di II VC PZD MACRO w/Canon Nikon mount

05/23/2008 10:07:47 AM · #5

well clouds move a bit, but nothing you can do about that, thanks!

05/23/2008 10:08:55 AM · #6

I assume you shoot on burst mode?

Tamron 16-300mm Di II VC PZD MACRO w/Canon Nikon mount

05/23/2008 10:13:05 AM · #7

no not burst mode, i was shoot on P with 3 different aeb modes. The clouds did not seem to be moving that fast, and in fact they where not. I am just getting a slight grainyness in some parts

So tell me, I know that a higher iso is used for darker situtations so that it can pick up more light, but what situations are you using higher iso's in??

Message edited by author 2008-05-23 10:14:14.

Nikon AF Zoom-Nikkor 24-85mm f2.8-4.0D

05/23/2008 10:17:05 AM · #8

You can shoot in burst using AEB. It will stop after taking 3 shots ... best way IMHO so prevent anything moving between the frames

If I need to increase the shutter speed (even in reasonable light) I will increase the ISO, eg if I am trying to shoot at 1/2000 or 1/4000 to stop motion etc ... or sometimes if I am shooting in shutter priority using a fast shutter speed I will leave the ISO on auto so the camera will sort it out

Nikolai1024

Nikon D300

05/23/2008 10:25:04 AM · #9

Originally posted by JulietNN:

...

So tell me, I know that a higher iso is used for darker situtations so that it can pick up more light, but what situations are you using higher iso's in??

When you hand hold the camera so you can avoide blur.

Tamron 16-300mm Di II VC PZD MACRO w/Canon Nikon mount

05/23/2008 10:29:13 AM · #10

Originally posted by Nikolai1024:

Originally posted by JulietNN:
...

So tell me, I know that a higher iso is used for darker situtations so that it can pick up more light, but what situations are you using higher iso's in??

When you hand hold the camera so you can avoide blur.

I didnt know that, why the heck didnt i know that.

SO, I am out on the street at night time, minimual light no tripod, yank up the ISO for less blur and to compensate for less light. Is that right???

Damn I feel like a blonde right now, how the heck did I not know that

05/23/2008 10:31:04 AM · #11

If you double the ISO you can double the shutter speed

eg if ISO 100 and 1/125 @ f/5.6 gives the correct exposure you can set the ISO to 200, shutter to 1/250 @ f/5.6

eta: so yeah, at night hand held you can set the ISO to something like 800 to get a much fast shutter speed

Message edited by author 2008-05-23 10:31:49.