Back button AF and AE/L

siva.ss.kumar · 02-21-2021, 08:56 PM

Hello

Is it possible to have both back button focusing and also AE lock functionality at the same time?
I am having AF2 for back button focusing. I am trying to see if I can program any other button to act as AE lock button. Any help? Thanks

**Cerebum** · 02-22-2021, 01:17 AM

Originally posted by siva.ss.kumar

Hello

Is it possible to have both back button focusing and also AE lock functionality at the same time?
I am having AF2 for back button focusing. I am trying to see if I can program any other button to act as AE lock button. Any help? Thanks

Which camera are you using?

stevejo · 02-22-2021, 02:38 AM

On the KP the fx2 and fx3 can both be set to AE-Lock if AE-L is set to AF1/2

**savoche** · 02-22-2021, 02:54 AM

Originally posted by siva.ss.kumar

Hello

Is it possible to have both back button focusing and also AE lock functionality at the same time?
I am having AF2 for back button focusing. I am trying to see if I can program any other button to act as AE lock button. Any help? Thanks

I don't think you can do that with the K-70. A workaround could be to use M mode (and use the green button for auto-exposure). That way you'll have an always-on AE lock. Expose with the green button, focus with the AE lock button, shoot.

Ususally I prefer EV compensation over AE lock, though. Unless I really want one specific exposure over time, in which case I would use M mode anyway.

**Cerebum** · 02-22-2021, 03:01 AM

On the kp, (in AP) my front dial is exposure comp, top is Iso, rear is aperture, AF/AE-L is back button focus and the top exposure button set to exposure lock

gatorguy · 02-22-2021, 04:48 AM

Would AE/L with AF locked accomplish what you want? Setting it to "On" would lock the exposure when the focus is locked by a half-press of the shutter button or AFAIK using back button focus too. That's in the camera settings, Custom page 1, line 6.

I can try it later if no one else can confirm in the meantime.

**UncleVanya** · 02-22-2021, 07:44 AM - **1 Like**

Originally posted by Cerebum

Which camera are you using?

K70 specific forum.

gatorguy · 02-22-2021, 07:52 AM

Originally posted by UncleVanya

K70 specific forum.

I for one am not paying attention this morning and edited my post for no particular reason. Geesh. thought you were telling me I was in the wrong place, which wouldn't be the first time.

**UncleVanya** · 02-22-2021, 07:59 AM

Originally posted by gatorguy

I for one am not paying attention this morning and edited my post for no particular reason. Geesh. thought you were telling me I was in the wrong place, which wouldn't be the first time.

Lol. No. I was merely trying to answer a question about which camera the op was using.

Benedict Michael · 02-22-2021, 07:23 PM

Originally posted by siva.ss.kumar

Hello

Is it possible to have both back button focusing and also AE lock functionality at the same time?
I am having AF2 for back button focusing. I am trying to see if I can program any other button to act as AE lock button. Any help? Thanks

Why? Histogram and Instant Review give you real time feedback on exposure. So Manual is easy. With AE-L, you can change position and the exposure changes and you're stuck with that.

siva.ss.kumar · 02-22-2021, 09:00 PM

Originally posted by Benedict Michael

Why? Histogram and Instant Review give you real time feedback on exposure. So Manual is easy. With AE-L, you can change position and the exposure changes and you're stuck with that.

I do mostly bird photography. Sometimes when shooting birds against sky or bright background, i quickly do a meter against green (like point at a tree, press AE-Lock to meter) and shoot the bird.

Manual mode is something I have to learn better. With birds that are busy, it is difficult to play with dials at that time. I tend to use Av mode most of the time. Sometimes do TAv mode. Things are easier with my K-5iis. I was hoping there was a work around/trick to get that AE-L feature in K70 as well.

Thanks all for the help

---------- Post added 23-02-21 at 09:32 AM ----------

Originally posted by gatorguy

Would AE/L with AF locked accomplish what you want? Setting it to "On" would lock the exposure when the focus is locked by a half-press of the shutter button or AFAIK using back button focus too. That's in the camera settings, Custom page 1, line 6.

I can try it later if no one else can confirm in the meantime.

I don't want to lock focus. Only exposure locked. I meter against green when there is a backlit subject.

02-21-2021, 08:56 PM	#1
siva.ss.kumar Pentaxian Join Date: Jan 2008 Location: Chennai, India Photos: Albums Posts: 534	Back button AF and AE/L Hello Is it possible to have both back button focusing and also AE lock functionality at the same time? I am having AF2 for back button focusing. I am trying to see if I can program any other button to act as AE lock button. Any help? Thanks

02-22-2021, 04:48 AM	#6
gatorguy Moderator Join Date: Feb 2015 Location: Central Florida Photos: Gallery Posts: 6,092	Would AE/L with AF locked accomplish what you want? Setting it to "On" would lock the exposure when the focus is locked by a half-press of the shutter button or AFAIK using back button focus too. That's in the camera settings, Custom page 1, line 6. I can try it later if no one else can confirm in the meantime. Last edited by gatorguy; 02-22-2021 at 07:55 AM.

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02-22-2021, 01:17 AM	#2
Cerebum Site Supporter Join Date: Oct 2017 Location: Lancaster Photos: Gallery Posts: 3,828	Originally posted by siva.ss.kumar Hello Is it possible to have both back button focusing and also AE lock functionality at the same time? I am having AF2 for back button focusing. I am trying to see if I can program any other button to act as AE lock button. Any help? Thanks Which camera are you using?

02-22-2021, 02:38 AM	#3
stevejo Pentaxian Join Date: Nov 2020 Location: Worcestershire, UK Photos: Albums Posts: 527	On the KP the fx2 and fx3 can both be set to AE-Lock if AE-L is set to AF1/2

02-22-2021, 02:54 AM	#4
savoche Master of the obvious Join Date: Jun 2011 Location: Lowlands of Norway Posts: 18,311	Originally posted by siva.ss.kumar Hello Is it possible to have both back button focusing and also AE lock functionality at the same time? I am having AF2 for back button focusing. I am trying to see if I can program any other button to act as AE lock button. Any help? Thanks I don't think you can do that with the K-70. A workaround could be to use M mode (and use the green button for auto-exposure). That way you'll have an always-on AE lock. Expose with the green button, focus with the AE lock button, shoot. Ususally I prefer EV compensation over AE lock, though. Unless I really want one specific exposure over time, in which case I would use M mode anyway.

02-22-2021, 03:01 AM	#5
Cerebum Site Supporter Join Date: Oct 2017 Location: Lancaster Photos: Gallery Posts: 3,828	On the kp, (in AP) my front dial is exposure comp, top is Iso, rear is aperture, AF/AE-L is back button focus and the top exposure button set to exposure lock

02-22-2021, 07:44 AM - 1 Like	#7
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,401	Originally posted by Cerebum Which camera are you using? K70 specific forum.

02-22-2021, 07:52 AM	#8
gatorguy Moderator Join Date: Feb 2015 Location: Central Florida Photos: Gallery Posts: 6,092	Originally posted by UncleVanya K70 specific forum. I for one am not paying attention this morning and edited my post for no particular reason. Geesh. thought you were telling me I was in the wrong place, which wouldn't be the first time.

02-22-2021, 07:59 AM	#9
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,401	Originally posted by gatorguy I for one am not paying attention this morning and edited my post for no particular reason. Geesh. thought you were telling me I was in the wrong place, which wouldn't be the first time. Lol. No. I was merely trying to answer a question about which camera the op was using.

02-22-2021, 07:23 PM	#10
Benedict Michael Junior Member Join Date: Jan 2021 Posts: 48	Originally posted by siva.ss.kumar Hello Is it possible to have both back button focusing and also AE lock functionality at the same time? I am having AF2 for back button focusing. I am trying to see if I can program any other button to act as AE lock button. Any help? Thanks Why? Histogram and Instant Review give you real time feedback on exposure. So Manual is easy. With AE-L, you can change position and the exposure changes and you're stuck with that.

02-22-2021, 09:00 PM	#11
siva.ss.kumar Pentaxian Join Date: Jan 2008 Location: Chennai, India Photos: Albums Posts: 534 Original Poster	Originally posted by Benedict Michael Why? Histogram and Instant Review give you real time feedback on exposure. So Manual is easy. With AE-L, you can change position and the exposure changes and you're stuck with that. I do mostly bird photography. Sometimes when shooting birds against sky or bright background, i quickly do a meter against green (like point at a tree, press AE-Lock to meter) and shoot the bird. Manual mode is something I have to learn better. With birds that are busy, it is difficult to play with dials at that time. I tend to use Av mode most of the time. Sometimes do TAv mode. Things are easier with my K-5iis. I was hoping there was a work around/trick to get that AE-L feature in K70 as well. Thanks all for the help ---------- Post added 23-02-21 at 09:32 AM ---------- Originally posted by gatorguy Would AE/L with AF locked accomplish what you want? Setting it to "On" would lock the exposure when the focus is locked by a half-press of the shutter button or AFAIK using back button focus too. That's in the camera settings, Custom page 1, line 6. I can try it later if no one else can confirm in the meantime. I don't want to lock focus. Only exposure locked. I meter against green when there is a backlit subject.