Displaying aperture with FA lens

EllenJ · 06-26-2014, 06:33 PM

Just got a new lens today and am new to DSLR.

Should the Pentax-FA lenses show the aperture in the viewfinder and screen when focusing manually? The EXIF shows 2.8 regardless of what I did, even in AF.

So far, I've used Av with MF. The viewfinder and screen show F-- all the time (when not in AF).

Lens: Pentax-FA 50mm f2.8 macro. Camera:K-50.

In a thread about A lenses, someone said a dirty contact could cause this since the A lens is supposed to show the aperture. I thought I'd ask before messing with it.

I downloaded the manual and didn't find anything useful.

Last edited by EllenJ; 06-26-2014 at 06:45 PM.

**GPZ** · 06-26-2014, 06:47 PM

Did you position the aperture ring to A?

Adam · 06-26-2014, 07:12 PM - **1 Like**

Originally posted by EllenJ

Just got a new lens today and am new to DSLR.

Should the Pentax-FA lenses show the aperture in the viewfinder and screen when focusing manually? The EXIF shows 2.8 regardless of what I did, even in AF.

So far, I've used Av with MF. The viewfinder and screen show F-- all the time (when not in AF).

Lens: Pentax-FA 50mm f2.8 macro. Camera:K-50.

In a thread about A lenses, someone said a dirty contact could cause this since the A lens is supposed to show the aperture. I thought I'd ask before messing with it.

I downloaded the manual and didn't find anything useful.

Clean the lens mount, set the aperture ring to "A", and you should be good to go. On digital bodies, the aperture is adjusted via the e-dial on the camera rather than the aperture ring.

EllenJ · 06-26-2014, 07:14 PM

Originally posted by GPZ

Did you position the aperture ring to A?

That's what I did wrong -- hadn't. I've been shooting with a manual lens for so long I didn't think of that.

Thank you!

And thanks, Adam. (Just saw the other reply)

06-26-2014, 06:33 PM	#1
EllenJ Junior Member Join Date: Mar 2014 Location: Eastern US Photos: Gallery Posts: 47	Displaying aperture with FA lens Just got a new lens today and am new to DSLR. Should the Pentax-FA lenses show the aperture in the viewfinder and screen when focusing manually? The EXIF shows 2.8 regardless of what I did, even in AF. So far, I've used Av with MF. The viewfinder and screen show F-- all the time (when not in AF). Lens: Pentax-FA 50mm f2.8 macro. Camera:K-50. In a thread about A lenses, someone said a dirty contact could cause this since the A lens is supposed to show the aperture. I thought I'd ask before messing with it. I downloaded the manual and didn't find anything useful. Last edited by EllenJ; 06-26-2014 at 06:45 PM.

06-26-2014, 07:12 PM - 1 Like	#3
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,594	Originally posted by EllenJ Just got a new lens today and am new to DSLR. Should the Pentax-FA lenses show the aperture in the viewfinder and screen when focusing manually? The EXIF shows 2.8 regardless of what I did, even in AF. So far, I've used Av with MF. The viewfinder and screen show F-- all the time (when not in AF). Lens: Pentax-FA 50mm f2.8 macro. Camera:K-50. In a thread about A lenses, someone said a dirty contact could cause this since the A lens is supposed to show the aperture. I thought I'd ask before messing with it. I downloaded the manual and didn't find anything useful. Clean the lens mount, set the aperture ring to "A", and you should be good to go. On digital bodies, the aperture is adjusted via the e-dial on the camera rather than the aperture ring. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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06-26-2014, 06:47 PM	#2
GPZ Site Supporter Join Date: Jan 2013 Location: Montreal Photos: Albums Posts: 425	Did you position the aperture ring to A?

06-26-2014, 07:14 PM	#4
EllenJ Junior Member Join Date: Mar 2014 Location: Eastern US Photos: Gallery Posts: 47 Original Poster	Originally posted by GPZ Did you position the aperture ring to A? That's what I did wrong -- hadn't. I've been shooting with a manual lens for so long I didn't think of that. Thank you! And thanks, Adam. (Just saw the other reply)