Vintage lenses - radioactive?

Sannto73 · 06-03-2018, 01:40 PM

SMC PENTAX - A* 1:4 300mm

SMC PENTAX - A ZOOM 1: 3.5 35~105mm

SMC PENTAX - M 1: 1.4 50mm

SMC PENTAX - A MACRO 1: 2.8 50mm.

Anyone knows if this lenses are radioactive?

Last edited by BigMackCam; 06-03-2018 at 01:49 PM.

**boriscleto** · 06-03-2018, 01:42 PM

Originally posted by Sannto73

SMC PENTAX - A MACRO 1: 2.8 50mm anyone knows if this lenses are radioactive?

Only a few Takumar screw mount lenses are Thoriated. None of the K-mount lenses are.

bertwert · 06-03-2018, 01:46 PM

You can edit threads you have previously made... and to relay the answer posted in your other thread:
No they are not, no K-mount lenses are Thoriated.

**Kerrowdown** · 06-03-2018, 01:47 PM

Originally posted by Sannto73

Anyone knows if this lenses are radioactive?

No I think your ok with these.

Sannto73 · 06-03-2018, 01:49 PM

Originally posted by bertwert

You can edit threads you have previously made... and to relay the answer posted in your other thread:
No they are not, no K-mount lenses are Thoriated.

Thank you

---------- Post added 06-03-18 at 01:50 PM ----------

Originally posted by boriscleto

Only a few Takumar screw mount lenses are Thoriated. None of the K-mount lenses are.

Thank you

SSGGeezer · 06-03-2018, 01:56 PM

Not something to be concerned about even if you have one of the lenses that are Thoriated. Post some images from your stable of classics here!

Fogel70 · 06-04-2018, 12:18 AM

Don't eat the yellow glass.

06-03-2018, 01:40 PM	#1
Sannto73 New Member Join Date: Jun 2018 Posts: 5	Vintage lenses - radioactive? SMC PENTAX - A* 1:4 300mm SMC PENTAX - A ZOOM 1: 3.5 35~105mm SMC PENTAX - M 1: 1.4 50mm SMC PENTAX - A MACRO 1: 2.8 50mm. Anyone knows if this lenses are radioactive? Last edited by BigMackCam; 06-03-2018 at 01:49 PM.

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06-03-2018, 01:42 PM	#2
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	Originally posted by Sannto73 SMC PENTAX - A MACRO 1: 2.8 50mm anyone knows if this lenses are radioactive? Only a few Takumar screw mount lenses are Thoriated. None of the K-mount lenses are.

06-03-2018, 01:46 PM	#3
bertwert Veteran Member Join Date: Jun 2015 Location: Golden, BC Posts: 15,172	You can edit threads you have previously made... and to relay the answer posted in your other thread: No they are not, no K-mount lenses are Thoriated.

06-03-2018, 01:47 PM	#4
Kerrowdown PEG Moderator Join Date: Aug 2008 Location: Highlands of Scotland... "Hold Infinity in the palm of your hand" - William Blake Photos: Gallery Posts: 57,835	Originally posted by Sannto73 Anyone knows if this lenses are radioactive? No I think your ok with these.

06-03-2018, 01:49 PM	#5
Sannto73 New Member Join Date: Jun 2018 Posts: 5 Original Poster	Originally posted by bertwert You can edit threads you have previously made... and to relay the answer posted in your other thread: No they are not, no K-mount lenses are Thoriated. Thank you ---------- Post added 06-03-18 at 01:50 PM ---------- Originally posted by boriscleto Only a few Takumar screw mount lenses are Thoriated. None of the K-mount lenses are. Thank you

06-03-2018, 01:56 PM	#6
SSGGeezer Veteran Member Join Date: Jun 2017 Location: Indiana, U.S. Photos: Gallery \| Albums Posts: 4,845	Not something to be concerned about even if you have one of the lenses that are Thoriated. Post some images from your stable of classics here!

06-04-2018, 12:18 AM	#7
Fogel70 Pentaxian Join Date: Sep 2009 Location: Stockholm, Sweden Photos: Albums Posts: 3,062	Don't eat the yellow glass.