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R.Miller · 03-03-2007, 05:04 PM

Hi,

I have a Canon 52mm 1.6X tele converter that screws on the end of an adapter for a Canon S1-IS I have. I played around with using it on the end of my Pentax DA 18-55 and 50-200 lenses and it appears to work fine.

Is there any issue with adding weight to the end of the lens? It's only 5.2oz (148g) but I do not want to damage the focus mechanism.

Also, Is a tele converter that sits between the body and lens better than the one I am using on the end of a lens?

Thanks,

roy · 03-03-2007, 07:51 PM

yes the TC is better as long as it's a good one..

doubt very seriously that the extra weight will do harm. try putting a A*300 on the camera and then you should start worrying.

R.Miller · 03-03-2007, 08:48 PM

Thanks Roy. That makes me feel better.

FotoPete · 03-03-2007, 08:56 PM

Becareful if you use it on your DA. Its extra weight on your AF motors. I suggest you use AF only with the teleconvertor.

I have a TCon17 and when I use it on my telephotos like my 135mm, I can feel extra friction in the focus ring.

One question though. How much light do you lose when you use a screw on teleconvertor?

Arjay Bee · 03-04-2007, 02:52 AM

I had one of those and tried it but I gave up as it was a bit of extra weight and I remember it vignetting badly - is that the case? Also it was soft on the canon so i didn't think it was worth it overall.

My son has it now for use on the A70.

R.Miller · 03-04-2007, 02:30 PM

Hi,

I do lose a bit of light, probably about a stop with it. The vignetting was not bad from what I could tell but the focus is a hare softer without a doubt.

I guess my biggest concern was the added stress on the lens focusing mechanism. I do not use it a lot due to the softer focus, just if I'm desperate for a longer reach.

Thanks for input FotoPete and Arjay Bee!

roy · 03-04-2007, 03:22 PM

Originally posted by FotoPete

Becareful if you use it on your DA. Its extra weight on your AF motors. I suggest you use AF only with the teleconvertor.

I have a TCon17 and when I use it on my telephotos like my 135mm, I can feel extra friction in the focus ring.

One question though. How much light do you lose when you use a screw on teleconvertor?

point well taken pete. that's what happens when all you have is manual lenses.. well, i do have the kit lens. altho the tcon is a monster..

03-03-2007, 05:04 PM	#1
R.Miller Veteran Member Join Date: Feb 2007 Location: Midwest Coastal Region USA Photos: Gallery Posts: 426	Adding TC-DC52B 1.6X to a DA lens Hi, I have a Canon 52mm 1.6X tele converter that screws on the end of an adapter for a Canon S1-IS I have. I played around with using it on the end of my Pentax DA 18-55 and 50-200 lenses and it appears to work fine. Is there any issue with adding weight to the end of the lens? It's only 5.2oz (148g) but I do not want to damage the focus mechanism. Also, Is a tele converter that sits between the body and lens better than the one I am using on the end of a lens? Thanks,

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03-03-2007, 07:51 PM	#2
roy Inactive Account Join Date: Sep 2006 Location: D/FW area, Tx. Photos: Gallery Posts: 1,710	yes the TC is better as long as it's a good one.. doubt very seriously that the extra weight will do harm. try putting a A*300 on the camera and then you should start worrying.

03-03-2007, 08:48 PM	#3
R.Miller Veteran Member Join Date: Feb 2007 Location: Midwest Coastal Region USA Photos: Gallery Posts: 426 Original Poster	Thanks Roy. That makes me feel better.

03-03-2007, 08:56 PM	#4
FotoPete Veteran Member Join Date: Feb 2007 Location: Toronto Photos: Gallery Posts: 1,774	Becareful if you use it on your DA. Its extra weight on your AF motors. I suggest you use AF only with the teleconvertor. I have a TCon17 and when I use it on my telephotos like my 135mm, I can feel extra friction in the focus ring. One question though. How much light do you lose when you use a screw on teleconvertor?

03-04-2007, 02:52 AM	#5
Arjay Bee Pentaxian Join Date: Sep 2006 Location: Horn Island, Torres Straits, Q Photos: Gallery Posts: 4,715	I had one of those and tried it but I gave up as it was a bit of extra weight and I remember it vignetting badly - is that the case? Also it was soft on the canon so i didn't think it was worth it overall. My son has it now for use on the A70.

03-04-2007, 02:30 PM	#6
R.Miller Veteran Member Join Date: Feb 2007 Location: Midwest Coastal Region USA Photos: Gallery Posts: 426 Original Poster	Hi, I do lose a bit of light, probably about a stop with it. The vignetting was not bad from what I could tell but the focus is a hare softer without a doubt. I guess my biggest concern was the added stress on the lens focusing mechanism. I do not use it a lot due to the softer focus, just if I'm desperate for a longer reach. Thanks for input FotoPete and Arjay Bee!

03-04-2007, 03:22 PM	#7
roy Inactive Account Join Date: Sep 2006 Location: D/FW area, Tx. Photos: Gallery Posts: 1,710	Originally posted by FotoPete Becareful if you use it on your DA. Its extra weight on your AF motors. I suggest you use AF only with the teleconvertor. I have a TCon17 and when I use it on my telephotos like my 135mm, I can feel extra friction in the focus ring. One question though. How much light do you lose when you use a screw on teleconvertor? point well taken pete. that's what happens when all you have is manual lenses.. well, i do have the kit lens. altho the tcon is a monster..

Adding TC-DC52B 1.6X to a DA lens

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