CCTV calculators

[Stanislav]

Released 3.0 version of VideoCAD.

Whats' new in VideoCAD 3.0 - http://www.cctvcad.com/Whats_new.html

Update for all previous versions is free of charge. Furthermore, counters of all customers

[Guest oddsocks]

Peter,

I got mine from http://www.calmar-filters.com/cctv_filters.htm but they were not cheap. I have since been told that most of the filters I purchased could have been brought from a good photographic shop(doh) Maybe worth a try?

The Neutral Density filter has proved invaluable to me particularly when setting zoom lenses correctly.

Paul

[Stanislav]

To fix back focus of auto iris lens I successfully used filters that I cut from damaged floppy diskette. Different types of floppy diskettes provide filters of different density.

[Paul Giles]

I have the Computar set but to be honest you cant beat a night visit esp when using sony as they get to a real low lux level.

[Guest Stas]

Released 4.0 version of VideoCAD.

VideoCAD - the program for professional CCTV system designing.

Whats' new in VideoCAD 4.0 http://cctvcad.com/Whats_new.html

[jelly belly]

When I first joined the CCTV trade over 6 years ago and had to work out what size lens to use. Someone gave me a cardboard disc and said, "There you go! Work it out!". With that in mind I decided to make it easier for myself and everyone else in the industry to work it out...........

The result is the Graphic CCTV Lens Calculator - Please let me know what you think!

Software 4 CCTV

[ian.cant]

When I first joined the CCTV trade over 6 years ago and had to work out what size lens to use. Someone gave me a cardboard disc and said, "There you go! Work it out!". With that in mind I decided to make it easier for myself and everyone else in the industry to work it out...........

The result is the Graphic CCTV Lens Calculator - Please let me know what you think!

Software 4 CCTV

A 30 day demo and then your hoping we will say its the muts nuts......... a totally free sample would be more like it.

Especially seeing there is a perfectly good free version at the top of the page.........

[baywatch]

Looks good for explaining to end user size of images & how field of view narrows.

Maybe it would be even better if little man had a fence or something behind him to explain better to end users the different views.

Good luck with it

[Rich]

Anyone know where I can get a cheap set of lense filters for night time focusing?

Pete

Have you managed to get yourself any filters yet Pete?

I got mine from ebay at a very reasonable price and only the filters I needed, http://search.ebay.co.uk/search/search.dll...ters&category0=

[Tagfcuk]

Basically a lens calculator works out what size lens you need depending on the distances and or size of area you want in your picture.

So you know what chip size your using (1/3 inch), use metres, and you have measured how far away and how wide the object you gonna watch is ( 10mtrs x 3 mtrs).

You want that object in you picture and its height will be say 3 mtrs, enter those into the calculator where required and calculate. it will now tell you what size lens you will need. In this case it will be a 16mm lens.

They were almost essential once but now i dont know anyone that needs to use one.

If a varifocal lens wont do the job then maybe you would need one but myself i sort of know from experience.

If anyone wants a lens angle calculator wheel drop me an e-mail and I will post it to you with some instructions. Always find it useful when I can't get to a PC.

Chris Newman

www.vipcctv.co.uk