Trouble finding a lens

[Scruit 0]

I'm looking for a lens with the following characteristics:

 

For 1/3" BW CCD

CS mount

Auto-Iris

Varifocal (I need to use ~60mm)

Threaded end for filter

 

 

I have found loads of lenses on the net that have most of these specs, with prices ranging from $70 to $150. BUT nobody under 150 will commit to saying if the lens is threaded for a filter. The most common response to my question (Does it have a 46mm or 52mm thread for a filter?) is "No, it's threaded for CS mount."

[CollinR 0]

There is a guy in the UK who makes a CS>35mm adapter, then you can use any pro photo lenses. Might be worthwhile checking out, I looked into it during your original LPR cam thread.

 

Also certain lenses lend themselves to the pop on style filters.

[marzsit 0]

cosmicar lenses have filter threads.

some computar lenses (mostly motorized zoom/focus) have filter threads.

 

i have played around with using 35mm slr camera lenses (specifically m42/pentax mount) on cctv cameras using a c-mount adapter. for the most part it works, but because the image sensor in a cctv camera is much smaller than a frame of 35mm film, the field-of-view is reduced substantially.. a 135mm portrait lens becomes a telescope when used on a cctv camera. sometimes this can be a good thing, especially if you need a very long-range lens.

[rory 0]

http://www.fujinon.com/Security/Product.aspx?cat=39&id=139

 

built in filter, if its like computar I imagine it has the threads so you can replace it with your own.

[Scruit 0]

Tnx for the post, Rory. The plug on that lens appears to be a different shape and for 'Filter size' it just lists "--"

 

I did finally find a seller on ebay who list isting a 6-60mm varifocal auto-iris lens with a filter size of 46mm, so I'll probably get that.

[SBTVideoman 0]

Seikou Optical/Avenir makes a 7-70mm varifocal lens, that has its end threaded.

 

GE Security has a similar lens, the KTL-7-70VA - look under

http://www.gesecurity.com/portal/site/GESecurity/menuitem.f76d98ccce4cabed5efa421766030730?selectedID=9348&seriesyn=true&seriesID=

 

 

Siemens also has a similar lens, the CLVD1318/7-70

Look under https://www.hqs.sbt.siemens.com/fs/content/20_20_10_20/20_20_10_20_060en.htm

 

There are others as well.

 

I have one of these lenses and it looks like a standard photo filter will screw in...something like a 46mm (49mm is too big, 43.5mm too small, don't have a filter in-between).