Hello from a nippy Cardiff morning

Pras · 11-07-2010, 02:03 AM

Hello Everyone,

I am Pras. Love photography - looooooong way to call myself a photographer!!

I have been trying to read the best practices and trying to get that implemented. Bought the Pentax kx after a long research - got the kit lenses. I may be hurrying myself to things - but wanted to have a lens that was fast and gave me a good coverage of focal lengths. So with my very shallow pocket got the Vivitar 28-105mm f2.8-3.5 lens.

Now with my shallow knowledge and pouring over the camera manual, I think I have figured out that this lens can only be used in the Aperture ring auto-mode (A) - and then only you can use the different camera modes (Av, Tv, S, P). But does this limit the capabilities of the lens???I want to use this lens as a carry-around lens - I know its heavy but can take that for some good cherishable snaps.

Any tips of how to use this lens with my camera in a lay man's language will be of most help. Thanks a lot in advance.

Pras

Ole · 11-07-2010, 08:59 AM

If the lens has an "A" setting on the aperture ring then leave the ring set to "A". You can use all exposure modes just like the kit lens.

If the lens does NOT have an "A" setting then it gets more involved. Let us know and we can discuss that next.

Pras · 11-08-2010, 01:26 PM

Hi there. Thanks for replying. Yes there is an A position and I can get the various modes in the camera working. But can I get the aperture controlled just by the ring on the camera because I am not being able to move the aperture ring of the lens. Sorry if its a daft thing to say :-P

Ole · 11-08-2010, 06:17 PM

Yes, the aperture can be controlled by the dial on the camera in Av and M mode as long as the aperture ring on the lens is in the A position.

Pras · 11-09-2010, 12:42 AM

Thanks a lot.

Pras · 12-09-2010, 09:03 AM

Hi Ole and others. I have been trying to ask this question for some time now but not getting to time to open the site. Whenever I have attach the vivitar lens and switch the camera on, I am asked to input the focal length - can anyone help me with what is the input that is being asked?

Thanks,
Pras

Ira · 12-09-2010, 12:40 PM

I think you were given wrong information here.

It sounds like you have a manual lens, so it needs to know the focal length for shake reduction. Also let us know if F-- is flashing.

And If so, no-- you probably can't change aperture with the camera wheel.

Pras · 12-12-2010, 06:43 PM

Hi Ira. Thanks for your response. I attach my lens keeping the Aperture ring of the lens in the A position - then I am able to change the F number with the wheel in the Av mode and the shutter-speed in the Tv mode. But when I switch on the camera it asks me for the input focal length.

11-07-2010, 02:03 AM	#1
Pras New Member Join Date: Nov 2010 Posts: 9	Hello from a nippy Cardiff morning Hello Everyone, I am Pras. Love photography - looooooong way to call myself a photographer!! I have been trying to read the best practices and trying to get that implemented. Bought the Pentax kx after a long research - got the kit lenses. I may be hurrying myself to things - but wanted to have a lens that was fast and gave me a good coverage of focal lengths. So with my very shallow pocket got the Vivitar 28-105mm f2.8-3.5 lens. Now with my shallow knowledge and pouring over the camera manual, I think I have figured out that this lens can only be used in the Aperture ring auto-mode (A) - and then only you can use the different camera modes (Av, Tv, S, P). But does this limit the capabilities of the lens???I want to use this lens as a carry-around lens - I know its heavy but can take that for some good cherishable snaps. Any tips of how to use this lens with my camera in a lay man's language will be of most help. Thanks a lot in advance. Pras

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11-07-2010, 08:59 AM	#2
Ole Administrator Join Date: Sep 2006 Location: Copenhagen, Denmark Photos: Gallery \| Albums Posts: 4,409	If the lens has an "A" setting on the aperture ring then leave the ring set to "A". You can use all exposure modes just like the kit lens. If the lens does NOT have an "A" setting then it gets more involved. Let us know and we can discuss that next.

11-08-2010, 01:26 PM	#3
Pras New Member Join Date: Nov 2010 Posts: 9 Original Poster	Hi there. Thanks for replying. Yes there is an A position and I can get the various modes in the camera working. But can I get the aperture controlled just by the ring on the camera because I am not being able to move the aperture ring of the lens. Sorry if its a daft thing to say :-P

11-08-2010, 06:17 PM	#4
Ole Administrator Join Date: Sep 2006 Location: Copenhagen, Denmark Photos: Gallery \| Albums Posts: 4,409	Yes, the aperture can be controlled by the dial on the camera in Av and M mode as long as the aperture ring on the lens is in the A position.

11-09-2010, 12:42 AM	#5
Pras New Member Join Date: Nov 2010 Posts: 9 Original Poster	Thanks a lot.

12-09-2010, 09:03 AM	#6
Pras New Member Join Date: Nov 2010 Posts: 9 Original Poster	Hi Ole and others. I have been trying to ask this question for some time now but not getting to time to open the site. Whenever I have attach the vivitar lens and switch the camera on, I am asked to input the focal length - can anyone help me with what is the input that is being asked? Thanks, Pras

12-09-2010, 12:40 PM	#7
Ira Inactive Account Join Date: Mar 2009 Location: Coral Springs, FL Photos: Gallery \| Albums Posts: 5,216	I think you were given wrong information here. It sounds like you have a manual lens, so it needs to know the focal length for shake reduction. Also let us know if F-- is flashing. And If so, no-- you probably can't change aperture with the camera wheel.

12-12-2010, 06:43 PM	#8
Pras New Member Join Date: Nov 2010 Posts: 9 Original Poster	Hi Ira. Thanks for your response. I attach my lens keeping the Aperture ring of the lens in the A position - then I am able to change the F number with the wheel in the Av mode and the shutter-speed in the Tv mode. But when I switch on the camera it asks me for the input focal length.