Ad
Ad
Ad
Pages: [1]   Bottom of Page
Print
Author Topic: Aptus 22 long exposure question  (Read 2169 times)
mcfoto
Sr. Member
****
Offline Offline

Posts: 938


WWW
« on: December 03, 2006, 09:41:44 PM »
ReplyReply

Hi
I am quoting on a job which will be on location. How long of an exposure can you get with the Aptus 22? At what point does noise become a factor? I am always shooting flash in the studio so this is new to me.
Thanks Denis
Logged

Denis Montalbetti
Montalbetti+Campbell
www.montalbetticampbell.com
James Russell
Guest
« Reply #1 on: December 03, 2006, 10:31:39 PM »
ReplyReply

Quote
Hi
I am quoting on a job which will be on location. How long of an exposure can you get with the Aptus 22? At what point does noise become a factor? I am always shooting flash in the studio so this is new to me.
Thanks Denis
[{POST_SNAPBACK}][/a]


Anything over 10 seconds on the A-22 shows some noise in the blacks and at 22 seconds it can beccome problematic.

[a href=\"http://www.russellrutherfordgroup.com/22seconds.jpg]http://www.russellrutherfordgroup.com/22seconds.jpg[/url]

Ask Yair, there may be a workaround.

JR
Logged
ericstaud
Sr. Member
****
Offline Offline

Posts: 384


WWW
« Reply #2 on: December 03, 2006, 11:07:57 PM »
ReplyReply

You have to test it yourself is the short answer,  Especially if its for a job you have to deliver.

A 20 second exposure at 25 ISO will have less noise than a 10 second exposure at 50 ISO, so just turning up the ISO may not work to shorten exposures.  You will probably get different amounts of noise with daylight than with tungsten (a sunset shot vs. interiors).  Raw Developer does a very good job with image noise.  With some of my tests RAW Developer had a better ability to remove hot pixels than the Leaf software (It also makes noise with the P45 more attractive with Phase files than C1 Pro).

The Aptus 75 will give you 50 ASA with the same noise levels that the Aptus 22 will give you at 25 ASA, so it has an advantage in this situation aside from just having more pixels.

Testing, testing, and more testing.  And then test some more.

I think with image noise it is also difficult to predict how noise on your monitor will translate to a print.

Also, be very careful with exposing properly or braketing.  Opening up the shadows in long exposure images will not work like you can with strobe lit images.
Logged
AndrewDyer
Full Member
***
Offline Offline

Posts: 125


WWW
« Reply #3 on: December 04, 2006, 01:22:19 AM »
ReplyReply

G'day Dennis.

I haven't received my Aptus on order yet so I cannot do any testing for you - but to add to Erics comment I would say that I found processing long exposed Aptus files (sent to me as a test from Yair) in LeafCapture much better at dealing with noise than Adobe CR. Particularly with some hot pixels showing up in ACR but not present in LC. I havn't tried RawDev yet so that may be even better.
Good luck.
Andrew
Logged

Pages: [1]   Top of Page
Print
Jump to:  

Ad
Ad
Ad