Go to a  "printer friendly" view of this message which allow an easy print Printer-friendly copy Go to the page which allows you to send this topic link and a message to a friend Email this topic to a friend
Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D5300/D5200/D5100/D5000/D3300/D3200/D3100/D3000 (Public) topic #6192
View in linear mode

Subject: "Auto ISO with a Hot-Shoe Mounted Flash" Previous topic | Next topic
jammike Registered since 19th Jun 2012Tue 19-Jun-12 01:36 PM
4 posts Share on Facebook Share on Twitter Share on Linkedin    Click to send email to this author Click to send private message to this authorClick to view this author's profile
"Auto ISO with a Hot-Shoe Mounted Flash"


US
          

The behaviour of the Auto ISO algorithm is consistent when using the camera pop-up flash in slow mode as well. Unfortunately, things are weirder when using a hot-shoe mounted flash, such as an SB-400. In this case, the camera increases the ISO sensitivity up to four times the value currently selected and won't raise it any more, even if you selected a greater maximum ISO.

As per the blog
http://thegreyblog.blogspot.com/2011/08/weird-auto-iso-behaviour-on-nikon-d5100.html

The 1.01 firmware seems to fix this undocumented "feature": the Auto ISO behaviour is the same when using either the pop-up flash or a hot-shoe mounted flash.

However My 5100 (bought recently) has firmware 1.01 but it is still exhibiting the same problem. Has anyone else also faced this issue ?

  

Alert Printer-friendly copy | Reply | Reply with quote | Top

Replies to this topic

Leonard62 Gold Member Awarded for excellent contributions and sharing his in-depth knowledge and experience with the community, especially of Nikkor Lenses Nikonian since 15th Mar 2009Tue 19-Jun-12 02:07 PM
2953 posts Share on Facebook Share on Twitter Share on Linkedin    Click to send email to this author Click to send private message to this authorClick to view this author's profile
#1. "RE: Auto ISO with a Hot-Shoe Mounted Flash"
In response to Reply # 0


Hatboro, Pa, US
          

The bottom line is don't use Auto ISO with flash of any kind with the D5100 or D3200 for that matter.

The camera Auto ISO will raise the ISO value to match the darkened ambient light in the room. In the case of setting the high ISO point to 3200 or 6400 with the built in flash it could raise the ISO up to that point.

I just set my D5100 to Auto ISO with a high point of ISO 3200. I then took two identical photos.
With the built in flash ISO jumped to 3200. I had the default ISO set at 200.
With the SB400 flash mounted, Auto ISO set the ISO to 800. So the bloggers 4X number seems correct with the SB400.

Again. Don't use Auto ISO with flash.

Len

Visit my Nikonians gallery.

  

Alert Printer-friendly copy | Reply | Reply with quote | Top

    
Leonard62 Gold Member Awarded for excellent contributions and sharing his in-depth knowledge and experience with the community, especially of Nikkor Lenses Nikonian since 15th Mar 2009Tue 19-Jun-12 02:09 PM
2953 posts Share on Facebook Share on Twitter Share on Linkedin    Click to send email to this author Click to send private message to this authorClick to view this author's profile
#2. "RE: Auto ISO with a Hot-Shoe Mounted Flash"
In response to Reply # 1


Hatboro, Pa, US
          

By the way, this is not a problem with your camera. It seems to be a feature designed in by Nikon.

This has been discussed many times on this forum.

Len


Visit my Nikonians gallery.

  

Alert Printer-friendly copy | Reply | Reply with quote | Top

        
jammike Registered since 19th Jun 2012Tue 19-Jun-12 02:29 PM
4 posts Share on Facebook Share on Twitter Share on Linkedin    Click to send email to this author Click to send private message to this authorClick to view this author's profile
#3. "RE: Auto ISO with a Hot-Shoe Mounted Flash"
In response to Reply # 2


US
          

thanks Leonard62,
I got the impression from the Blog that this was a bug not a feature. Infact this is what prompted me to fix the Auto ISO Sensitivity settings. thanks for your input.

  

Alert Printer-friendly copy | Reply | Reply with quote | Top

Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D5300/D5200/D5100/D5000/D3300/D3200/D3100/D3000 (Public) topic #6192 Previous topic | Next topic


Take the Nikonians Tour and learn more about being a Nikonian Wiki /FAQ /Help Listen to our MP3 photography radio channels Find anything on Nikon and imaging technology - fast!

Copyright © Nikonians 2000, 2014
All Rights Reserved

Nikonians®, NikoScope® and NikoniansAcademy™ are trademarks owned by Nikonians.org.
Nikon®, Nikonos® and Nikkor® are registered trademarks of Nikon Corporation.