help please

lorry1967 · 08-22-2012, 07:38 AM

Hi I am a relative novice and need some help with an issue I have please.....I am using a K10d with a tamron 70-300mm lens, I have recently bought a komura telemore 95 ii 7.k.m.o. converter. When i put it on the camera and attach the lens it flashes a F on the display....what dpes this mean please and how can i get rid of it ?

thank you in advance

eddie1960 · 08-22-2012, 07:52 AM

it means the TC is for full manual use and doesn't transmit the info from the contacts. Essentially you will need to treat the lens as an m or k lens from a metering shooting standpoint when using the TC
read
https://www.pentaxforums.com/forums/pentax-beginners-corner-q/60081-usage-green-button.html
and
https://www.pentaxforums.com/forums/pentax-beginners-corner-q/110658-using-ma...x-dslrs-f.html

You will need to go into the menu and set enable use of aperture ring to yes

elliott · 08-22-2012, 07:54 AM

It means the teleconverter does not pass through the lens information to the body. I don't believe that Tamron has an aperture ring, so you can't even use it in manual mode unless you want only minimum aperture. You need to find a teleconverter with A contacts and autofocus if you would like that to work too.

eddie1960 · 08-22-2012, 07:57 AM

Originally posted by elliott

It means the teleconverter does not pass through the lens information to the body. I don't believe that Tamron has an aperture ring, so you can't even use it in manual mode unless you want only minimum aperture. You need to find a teleconverter with A contacts and autofocus if you would like that to work too.

the tamron does have an aperture ring if it is this one

Tamron 70-300mm F4-5.6 AF Di LD Macro Lens Reviews - Tamron Lenses - Pentax Lens Review Database

I'm not aware of another 70-300 from Tamron (they made some older 75-300 models)

lorry1967 · 08-22-2012, 08:00 AM

Thank you Eddie, it is working now...

elliott · 08-22-2012, 08:02 AM

I guess I've been misled by the online stores using the same picture for every mount of the lens.

lorry1967 · 08-22-2012, 08:06 AM

as i said i am a novice and hadn't even realized i had to accept an aperture ring , but it has worked and I can now use the TC

thank you very much for the assistance greatly appreciated

eddie1960 · 08-22-2012, 08:08 AM - **1 Like**

Originally posted by lorry1967

as i said i am a novice and hadn't even realized i had to accept an aperture ring , but it has worked and I can now use the TC

thank you very much for the assistance greatly appreciated

now that you have that down you'll be tempted by all the wonderful cheap old lenses it allows you to use. LBA is in your future

08-22-2012, 07:38 AM	#1
lorry1967 Inactive Account Join Date: Aug 2012 Posts: 5	help please Hi I am a relative novice and need some help with an issue I have please.....I am using a K10d with a tamron 70-300mm lens, I have recently bought a komura telemore 95 ii 7.k.m.o. converter. When i put it on the camera and attach the lens it flashes a F on the display....what dpes this mean please and how can i get rid of it ? thank you in advance

08-22-2012, 08:00 AM	#5
lorry1967 Inactive Account Join Date: Aug 2012 Posts: 5 Original Poster	thank you Thank you Eddie, it is working now...

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08-22-2012, 07:52 AM	#2
eddie1960 Veteran Member Join Date: Aug 2010 Location: Toronto Photos: Gallery \| Albums Posts: 13,666	it means the TC is for full manual use and doesn't transmit the info from the contacts. Essentially you will need to treat the lens as an m or k lens from a metering shooting standpoint when using the TC read https://www.pentaxforums.com/forums/pentax-beginners-corner-q/60081-usage-green-button.html and https://www.pentaxforums.com/forums/pentax-beginners-corner-q/110658-using-ma...x-dslrs-f.html You will need to go into the menu and set enable use of aperture ring to yes

08-22-2012, 07:54 AM	#3
elliott Inactive Account Join Date: Dec 2008 Location: North Carolina Photos: Albums Posts: 1,720	It means the teleconverter does not pass through the lens information to the body. I don't believe that Tamron has an aperture ring, so you can't even use it in manual mode unless you want only minimum aperture. You need to find a teleconverter with A contacts and autofocus if you would like that to work too.

08-22-2012, 07:57 AM	#4
eddie1960 Veteran Member Join Date: Aug 2010 Location: Toronto Photos: Gallery \| Albums Posts: 13,666	Originally posted by elliott It means the teleconverter does not pass through the lens information to the body. I don't believe that Tamron has an aperture ring, so you can't even use it in manual mode unless you want only minimum aperture. You need to find a teleconverter with A contacts and autofocus if you would like that to work too. the tamron does have an aperture ring if it is this one Tamron 70-300mm F4-5.6 AF Di LD Macro Lens Reviews - Tamron Lenses - Pentax Lens Review Database I'm not aware of another 70-300 from Tamron (they made some older 75-300 models)

08-22-2012, 08:02 AM	#6
elliott Inactive Account Join Date: Dec 2008 Location: North Carolina Photos: Albums Posts: 1,720	I guess I've been misled by the online stores using the same picture for every mount of the lens.

08-22-2012, 08:06 AM	#7
lorry1967 Inactive Account Join Date: Aug 2012 Posts: 5 Original Poster	as i said i am a novice and hadn't even realized i had to accept an aperture ring , but it has worked and I can now use the TC thank you very much for the assistance greatly appreciated

08-22-2012, 08:08 AM - 1 Like	#8
eddie1960 Veteran Member Join Date: Aug 2010 Location: Toronto Photos: Gallery \| Albums Posts: 13,666	Originally posted by lorry1967 as i said i am a novice and hadn't even realized i had to accept an aperture ring , but it has worked and I can now use the TC thank you very much for the assistance greatly appreciated now that you have that down you'll be tempted by all the wonderful cheap old lenses it allows you to use. LBA is in your future