D300 Sub-Dial exposure compensation?
I own my D300 since it came out. I just found a new "feature." Hey, I am a fast learner.
I have my D300 set to
1. Aperture priority.
2. Change Main/Sub Dial (f7) to ON
(I mainly use A mode and find the main dial is easier to use when the right hand is in a position to release the shutter.)
I use the main (rear) dial to set the aperture. This works fine.
But when I move the front dial, I do change the exposure time. I am in effect dialling in exposure compensation. The +/- icon appears on the top LCD and the view finder, and the analog exposure bars show the over or under exposure dialled in. Fortunately, after pressing the release button, the "compensation" set in with the sub-dial is reset to zero.
I actually like the method, because it automatically resets exposure compensation every time the shutter is released.
One could actually use this method to make a 2-bracket exposure, by setting compensation before the first shot, and then releasing the shutter twice. The first shot will be the compensated exposure, the second shot will be the as-metered exposure.
I could not find any reference to this use of the sub-dial in the D300 User Guide, my David Busch book, or in a Google search.
Does anybody use this method for exposure compensation?
BTW, this "feature" does not depend on the main and sub dials being reversed, and it also works this way in S mode. Of course, in P mode, the dials adjust exposure time and aperture while keeping the exposure as metered.
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#1. "RE: D300 Sub-Dial exposure compensation?" | In response to Reply # 0briantilley Nikonian since 26th Jan 2003Sun 06-Dec-09 07:51 PM
It sounds like you have Custom Setting b4 - Easy Exposure Compensation set to On (Auto reset).
This feature of the D300 allows you to engage exposure compensation without having to press the +/- button, simply by rotating the relevant Command Dial. Which Command Dial is used depends on the exposure mode and the setting of f7, as you have found.
Check page 276 in the D300 manual for more details
#3. "RE: D300 Sub-Dial exposure compensation?" | In response to Reply # 0
Here's a short excerpt from my book, Mastering the Nikon D300, available on Amazon.com:
Custom Setting b4 – (see user's manual pg. 276)
This particular series of settings took me a bit of thinking to wrap my brain around. The bottom line is that you can set the D300's exposure compensation without using the +/- Exposure Compensation button.
There are three settings in b4, as follows:
1. Reset On (Auto reset)
If you set the D300 to Reset On (Auto reset) or simply to On you can use the command dials to do exposure compensation, instead of the normal +/- Exposure Compensation button. Off means what it says. If you use the normal Exposure Compensation button, it overrides the settings of b4.
Each exposure mode (P,S,A,M) reacts somewhat differently to Custom Setting b4. Let's consider how the P-Program, S-Shutter Priority, and A-Aperture Priority modes act when you use the three settings above. The M-Manual mode does not seem to be affected by Custom setting b4, although it does work with the normal +/- Compensation button.
The top Control Panel LCD shows the compensation value you've dialed into the D300. Here are the values, and how they work:
Reset On (Auto reset)
Using the front Sub-command dial in P-Program or S-Shutter Priority modes, or the rear Main command dial in A-Aperture Priority mode, you can dial in exposure compensation without using the normal +/- Exposure compensation button.
Once you allow the meter to go off, or turn the camera off, the compensation value you dialed in is "reset" back to 0. That's why it's called "Auto reset."
If you already have a compensation value set, using the normal +/- Compensation Button, then the process of dialing in compensation with the sub-command dial simply adds more compensation to what you originally put in with the +/- compensation button. When the meter resets, it only returns back to the compensation value you added with the normal compensation button, and not to 0.
This works the same way as Reset On (Auto reset) above except that the compensation you've dialed in does not reset, but stays in place, even if the meter or camera is turned off.
Only the normal +/- Compensation button applies exposure compensation.
Special Note: The granularity of Custom setting b4's EV step fine tuning is affected by Custom setting b3's 1/3, 1/2, or 1 step setting. Also, the command dials used to set compensation can be swapped in Custom setting f7, which we will consider later in this chapter. (See pages 276 and 308 of your D300 User Manual)
Darrell Young (DigitalDarrell) www.pictureandpen.com
"Better too many words than not enough understanding."
#4. "RE: D300 Sub-Dial exposure compensation?" | In response to Reply # 3
#5. "RE: D300 Sub-Dial exposure compensation?" | In response to Reply # 4Tue 08-Dec-09 05:13 PM
> I have found this very interesting but recently I have been using auto iso a lot.
> Can I still use auto iso and this method of shooting?
Just tried it out on my D300, with Auto ISO set to ON in the shooting menu. The method still works. The appropriate sub-dial dials in compensation.
However, if you are in A mode, moving the sub-dial controlling the compensation, will change the aperture or ISO value to get the best compensated exposure, within the exposure time and ISO limits you have set up elsewhere in the menus.
Though I did not try it out, I suspect if you are in S mode, the sub-dial controlling the compensation will change the exposure time and ISO within the limits set up by you.
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