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11-19-2010, 03:39 PM   #1
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Using the TAv mode with the K7 ... question.

OK, I am not quite a beginner but at times like today, I do feel like one.
This is a question regarding the use of TAv mode on the K7.

I understand that with that mode you can choose your shutter speed and aperture. The ISO will then de determined by the camera for "proper" exposure. That's fine.

Why is it that when I meter on a subject and half press the shutter, then try to recompose, I am still seeing the "floating" ISO going all over the place.
Any way of locking that just by half pressing the shutter button, or do I have to use the AE lock button, or neither?

Thanks.

JP

11-19-2010, 03:45 PM   #2
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Custom menu, Lock AE to AF. Pg 128 in the manual.

Also see pg 114.

11-19-2010, 07:06 PM   #3
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QuoteOriginally posted by JeffJS Quote
Custom menu, Lock AE to AF. Pg 128 in the manual.

Also see pg 114.

Thanks Jeff.

This, on Page 114, does mention how to lock AE to AF but that is in multi segment metering.
I don't see how I could do this for spot metering, which is the mode I use.

Unless I assign a User function for this TAv business.

P 128 is for Catch in Focus. I am already using a User function for that. Can't the K7 store up to 3 User's settings? I am looking in the manual ... not much there.

So I guess this means I'm toast and I will have to press the AE lock button each time I want to aim, focus, recompose and shoot!

JP

Last edited by jpzk; 11-19-2010 at 07:15 PM.
11-19-2010, 07:55 PM   #4
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Like I said, Page 126...



11-22-2010, 09:04 AM   #5
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QuoteOriginally posted by JeffJS Quote
Like I said, Page 126...

Thanks again Jeff.

It works ... with pretty much all of my lenses except: Zeiss 85/1.4 (manual lens) !?
I tried it with the DA* lenses ... all fine.

So this means that this AE-lock feature (option in TAv) works only with "dedicated" lenses?

JP
11-22-2010, 10:15 AM   #6
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It will only work with AF. The option is called "AE-L with AF locked" after all.
With manual focus you have to lock AE manually.
11-22-2010, 05:20 PM   #7
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QuoteOriginally posted by Fogel70 Quote
It will only work with AF. The option is called "AE-L with AF locked" after all.
With manual focus you have to lock AE manually.


Ooops!!

Now I really feel like a newcomer here.
Thanks for pointing this out ... very embarassing.

Cheers.

JP
11-22-2010, 05:25 PM   #8
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Sounds like the AE lock button will be your friend here then! I never lock AE to AF though, not so good for the ol' focus and recompose!

11-22-2010, 06:32 PM   #9
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Well I'm learning now! I have been using AEL when AFL for a while and was wondering why my exposure was messing up with my SMC A 70-200 f4 (MF)
So I'm gonna do the exposure button from now on.
11-22-2010, 07:09 PM   #10
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QuoteOriginally posted by Arpe Quote
Sounds like the AE lock button will be your friend here then! I never lock AE to AF though, not so good for the ol' focus and recompose!
I do use the AE lock once in a while, but this time I was trying to figure out this "floating ISO" business in TAv mode, using a M lens this time!
As someone suggested to have the custom function of AE lock to the AF, I tried ... only to find out that this is not possible since AF means AF! Of course!! Dumb me, my 85/1.4 is a manual lens.

So, as you said, the AE lock button will definitely be my friend with any M lens I use in TAv mode but I have the feeling that I will stay with my old habits to focus and recompose (as you mentioned) in other than TAv modes.

Thanks for the reply too, puts me back in my place.

Cheers.

JP

Last edited by jpzk; 11-22-2010 at 07:13 PM. Reason: spelling
11-22-2010, 07:10 PM   #11
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QuoteOriginally posted by Tonto Quote
Well I'm learning now! I have been using AEL when AFL for a while and was wondering why my exposure was messing up with my SMC A 70-200 f4 (MF)
So I'm gonna do the exposure button from now on.
I can imagine what you've been trying to do, which is similar to try the AE lock to Af on my manual lens.

Cheers.

JP
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