Avoid CCTV Ultrak 3.5-8.0 f/1.4 len

rendition · 05-23-2014, 04:12 PM - **1 Like**

I cannot complain since I got one of these (C-mount len) for cheap. But at any rate, this len will not work on C-mount or D-mount (I tried C-to-D mount) since it required reaaallllly small minimal distance to CMOS sensor and you will not be able to focus, unless you are making your own adapter that REALLY really close to the sensor.

All is not lost however. I am planning to use it on Raspberry Pi camera module. That module has a CMOS sensor of 9.44 full frame crop factor and when I mount it on the module it should be able to give me 3.5*(9.44/2) - 8.0*(9.44/2) or about 16.52mm to 37.76mm of equivalent zoom on Raspberry Pi at ~ f/3.2

Picture of the beast attached, also rapsberry pi camera module, and also a sample pic of it free-lensing.

If any of you guys managed to mount it on a an adapter let me know. I am also planning to mount it on a harder plastic body cap of they are selling one for pentax Q. Otherwise it is not worth it unless you like to tinker around and instead get a wide angle cine D-mount len instead.

Attached Images

View Picture EXIF

Last edited by rendition; 05-23-2014 at 04:23 PM.

**barondla** · 05-23-2014, 05:30 PM

Bummer that it won't work on the Q. Would it work as a macro lens? Always looking for a small inexpensive way to do macros with the Q.

You are having fun with the Q. Keep it up.
thanks
barondla

rendition · 05-23-2014, 06:21 PM

Originally posted by barondla

Bummer that it won't work on the Q. Would it work as a macro lens? Always looking for a small inexpensive way to do macros with the Q.

You are having fun with the Q. Keep it up.
thanks
barondla

Hi Barondla:

With the typical C-to-D mount it will not even focus even with macro shot. It can only work with pentax Q body cap with custom drill hole. I will post picture once I receive the pentax Q body cap.

Mistral75 · 05-28-2014, 01:19 PM

Isn't it a CS mount lens, with a 12.526mm register (flange distance) compared to 17.526mm for the (regular) C mount?

rendition · 05-28-2014, 10:32 PM

Originally posted by Mistral75

Isn't it a CS mount lens, with a 12.526mm register (flange distance) compared to 17.526mm for the (regular) C mount?

Hi Mistral75

It fits C-to-D adapter, at least the version that I had it but needed to be closer to the sensor to be able to focus. Regardless, if you can find way to do it, the picture will be sharp and wide.

Mistral75 · 05-29-2014, 03:43 AM

Since you wrote:

Originally posted by rendition

(...) this lens will not work on C-mount or D-mount (I tried C-to-D mount) since it required reaaallllly small minimal distance to CMOS sensor and you will not be able to focus, unless you are making your own adapter that REALLY really close to the sensor.
(...)

I think it could be a CS mount lens, the CS mount being that of many CCTV lenses:

If the lens fits the C-to-D adapter, it has a C thread.
CS mount has the same thread as C mount but its register is much shorter (S in CS stays for Short): 12.526mm instead of 17.526mm.

If so, to work with a Pentax Q your lens would require an adapter 5mm shorter than a C-to-Q adapter and only 3.3mm thick (the Q mount's register is 9.2mm).

hnikesch · 05-29-2014, 06:13 AM

I have made a CS mount adapter by drilling and taping a D mount adapter to the C mount tread and used several CS lenses. I did have to add a thin shim to step the CS lens out a little form the D mount flange. The CS flange distance is 12.5mm and the D mount is 12.29mm

I would also guess your lens is CS mount

rendition · 05-29-2014, 11:55 AM

Originally posted by Mistral75

Since you wrote:

I think it could be a CS mount lens, the CS mount being that of many CCTV lenses:

If the lens fits the C-to-D adapter, it has a C thread.
CS mount has the same thread as C mount but its register is much shorter (S in CS stays for Short): 12.526mm instead of 17.526mm.

If so, to work with a Pentax Q your lens would require an adapter 5mm shorter than a C-to-Q adapter and only 3.3mm thick (the Q mount's register is 9.2mm).

Oh gotcha. Thank you for the useful infor Mistral75

Originally posted by hnikesch

I have made a CS mount adapter by drilling and taping a D mount adapter to the C mount tread and used several CS lenses. I did have to add a thin shim to step the CS lens out a little form the D mount flange. The CS flange distance is 12.5mm and the D mount is 12.29mm

I would also guess your lens is CS mount

Thank you for the clarification hnikesch

I guess the next question is there is no CS-to-Q adapter?

hnikesch · 05-29-2014, 12:29 PM

Originally posted by rendition

Oh gotcha. Thank you for the useful infor Mistral75

Thank you for the clarification hnikesch

I guess the next question is there is no CS-to-Q adapter?

I have not found one yet

rendition · 05-29-2014, 04:04 PM

Or you can make your own cap and drill the hole, or accessing to a machinery. Otherwise, you can do something like what I did to a 7-70mm f/1.8 len. I built an entire rig using materials at home. I took out the Raspberry Pi camera module len and place in the len, some glue parts, some Debian Linux part. My originally purpose was to do intensive video recording. The camera can take time-lapse 5megapixels or still picture, but it can record 1080p video resolution. What you ended up with is a an entire mini computer running on Debian Linux that is automated (running on SH script) turn on and off at certain time (15-20 hours video recording per day dumping on external hard drive at 30GB per day at full resolution)).

The len has an effective focal of ~300mm.

You can do touchscreen interface but I will leave it out for another project.

05-29-2014, 03:43 AM	#6
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527	Since you wrote: Originally posted by rendition (...) this lens will not work on C-mount or D-mount (I tried C-to-D mount) since it required reaaallllly small minimal distance to CMOS sensor and you will not be able to focus, unless you are making your own adapter that REALLY really close to the sensor. (...) I think it could be a CS mount lens, the CS mount being that of many CCTV lenses: If the lens fits the C-to-D adapter, it has a C thread. CS mount has the same thread as C mount but its register is much shorter (S in CS stays for Short): 12.526mm instead of 17.526mm. If so, to work with a Pentax Q your lens would require an adapter 5mm shorter than a C-to-Q adapter and only 3.3mm thick (the Q mount's register is 9.2mm).

05-29-2014, 11:55 AM	#8
rendition Senior Member Join Date: May 2014 Posts: 123 Original Poster	Originally posted by Mistral75 Since you wrote: I think it could be a CS mount lens, the CS mount being that of many CCTV lenses: If the lens fits the C-to-D adapter, it has a C thread. CS mount has the same thread as C mount but its register is much shorter (S in CS stays for Short): 12.526mm instead of 17.526mm. If so, to work with a Pentax Q your lens would require an adapter 5mm shorter than a C-to-Q adapter and only 3.3mm thick (the Q mount's register is 9.2mm). Oh gotcha. Thank you for the useful infor Mistral75 Originally posted by hnikesch I have made a CS mount adapter by drilling and taping a D mount adapter to the C mount tread and used several CS lenses. I did have to add a thin shim to step the CS lens out a little form the D mount flange. The CS flange distance is 12.5mm and the D mount is 12.29mm I would also guess your lens is CS mount Thank you for the clarification hnikesch I guess the next question is there is no CS-to-Q adapter?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
For Sale - Sold: M42 28/3.5, 35/3.5, 50mm F1.4 & F4.0, 55mm F1.8/2.0, 100/4, 135/2.5/3.5, 200/4	MightyMike	Sold Items	205	05-28-2014 08:59 PM
For Sale - Sold: K/M/A 28mm's, Most 50 & 55mm's, 135mm's, 200mm, + 4 Quality Zooms, Helicoid, Reverse	MightyMike	Sold Items	203	05-27-2014 08:09 PM
For Sale - Sold: Pentax 300mm f/4.0, Tokina AF 19-35 f/3.5-4.5, Vivitar Series 1 70-210mm f/3.5	hinman	Sold Items	9	11-14-2008 04:52 PM

05-23-2014, 05:30 PM	#2
barondla Site Supporter Join Date: Sep 2006 Location: midwest, United States Photos: Gallery \| Albums Posts: 5,716	Bummer that it won't work on the Q. Would it work as a macro lens? Always looking for a small inexpensive way to do macros with the Q. You are having fun with the Q. Keep it up. thanks barondla

05-23-2014, 06:21 PM	#3
rendition Senior Member Join Date: May 2014 Posts: 123 Original Poster	Originally posted by barondla Bummer that it won't work on the Q. Would it work as a macro lens? Always looking for a small inexpensive way to do macros with the Q. You are having fun with the Q. Keep it up. thanks barondla Hi Barondla: With the typical C-to-D mount it will not even focus even with macro shot. It can only work with pentax Q body cap with custom drill hole. I will post picture once I receive the pentax Q body cap.

05-28-2014, 01:19 PM	#4
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527	Isn't it a CS mount lens, with a 12.526mm register (flange distance) compared to 17.526mm for the (regular) C mount?

05-28-2014, 10:32 PM	#5
rendition Senior Member Join Date: May 2014 Posts: 123 Original Poster	Originally posted by Mistral75 Isn't it a CS mount lens, with a 12.526mm register (flange distance) compared to 17.526mm for the (regular) C mount? Hi Mistral75 It fits C-to-D adapter, at least the version that I had it but needed to be closer to the sensor to be able to focus. Regardless, if you can find way to do it, the picture will be sharp and wide.

05-29-2014, 06:13 AM	#7
hnikesch Veteran Member Join Date: May 2009 Location: Michigan, USA Photos: Albums Posts: 1,316	I have made a CS mount adapter by drilling and taping a D mount adapter to the C mount tread and used several CS lenses. I did have to add a thin shim to step the CS lens out a little form the D mount flange. The CS flange distance is 12.5mm and the D mount is 12.29mm I would also guess your lens is CS mount

05-29-2014, 12:29 PM	#9
hnikesch Veteran Member Join Date: May 2009 Location: Michigan, USA Photos: Albums Posts: 1,316	Originally posted by rendition Oh gotcha. Thank you for the useful infor Mistral75 Thank you for the clarification hnikesch I guess the next question is there is no CS-to-Q adapter? I have not found one yet

05-29-2014, 04:04 PM	#10
rendition Senior Member Join Date: May 2014 Posts: 123 Original Poster	Or you can make your own cap and drill the hole, or accessing to a machinery. Otherwise, you can do something like what I did to a 7-70mm f/1.8 len. I built an entire rig using materials at home. I took out the Raspberry Pi camera module len and place in the len, some glue parts, some Debian Linux part. My originally purpose was to do intensive video recording. The camera can take time-lapse 5megapixels or still picture, but it can record 1080p video resolution. What you ended up with is a an entire mini computer running on Debian Linux that is automated (running on SH script) turn on and off at certain time (15-20 hours video recording per day dumping on external hard drive at 30GB per day at full resolution)). The len has an effective focal of ~300mm. You can do touchscreen interface but I will leave it out for another project.