Anyone ever exchange a lens meant for a different camera and image sensor size?

Revo2Maxx

Revo2Maxx

IPCT+ Member
Jan 1, 2024
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USA
So I have a few of my 4mp cameras that has a junk 1/3" sensor and does offer a 2.7mm to 12mm and 2.7mm to 13.5mm mortised lens and I was thinking about moving one to a better camera? The camera has a larger image sensor and I understand the current mounted ICR might be an issue one for fitting to the larger sensor board. So I would most likely replace the ICR if it in fact don't fit.. I do understand that the camera might have some vignetting, aberrations issues by doing such a swap.. Swapping into has a 1/1.8" sensor with a f/1.6, 2.8mm lens that I did swap out to a f/1.4, 3.6mm little time ago with no issues.. The camera doesn't have a Mortorized circuit and I know that a circuit using the MS41909 while I could do it I am afraid that seeing it wasn't designed into the current camera design that I might not be able to make it compact enough to fit so I would just use a Manual control like I set up for one of my very old CS 20x Pelco lens Still own it back in the day to control the lens on one of my older Box cameras.. Difference with this lens is that it also has a motorized iris that I would have to control where the box camera had the auto iris built into the camera.. Now the main issue is the body style of both cameras is a Bullet style and while I can change out the face plate of the cameras to fit the larger lens not sure that it would work in the current housing. I do have a few extra Dahua IR and normal non IR housings that I could remove the guts and install in the huge Dahua box camera housings and if I did this I could build and use a motorized lens circuit main issue again that would still require input from me to make it work seeing the cameras don't have FW that sports the Motorized lens anyway so I might as well just do manual full controls either way I go.. However geez the more I think about it most of my Dahua zoom cameras are IR and while I don't need to use the ICR may need this distance of that space but I could just keep the ICR in day mode. Main issue is that the lens does have IR on the lens and my guess is going to have IR coating as well on glass so this might make it not work.. Humm anyone do this? I mean I have many box cameras even a Dahua 8mp box camera that I can change out the CS lenses and I know much different beast.. But my whole thing is that I want to try and get a better sensor camera with small range zoom. I mean sure I have my Uniview long range 4mp and Sharpshooter 4 that sport the 1/1.8" sensor but that is over kill for my current use case.. Plus they are IR until I turn on my white LED lights.. The 2 cameras I could take lenses from is a Ic-Realtime Ipeg-B40V-IRW2 or my Dahua 45NCB5Z.. Both are 1/3" sensor cameras and IR.. I mean even my Alibi 4mp Zoom Turret has a junk sensor 1/3".. Humm
 
Lenses are designed to project an image onto a specific sensor size. Using a lens designed for a smaller 1/3" sensor on a larger 1/1.8" sensor can lead to several problems. While lenses typically project an image larger than the sensor they are designed for, the quality of the image projected decreases as you move further from the center of the lens' intended image circle. As you noted, this can manifest as vignetting/darkening at the edges of the image, aberrations/blurring, or FOV changes due to effective cropping. You should also ensure that IR-corrected lenses are used with ICR cameras.

In short, while it's possible, the resulting image quality could be compromised due to the mismatch in sensor size. Given the potential complications, it's generally more practical to find a camera that already has the desired sensor size and lens combination.

If you desire to experiment with interchanging lenses, using a box camera with CS-mount lenses might be more straightforward.
 
Yes understand thank you. I do have box cameras with loads of lenses mostly for older cameras. I just wanted to have better lens on better sensor camera to use in no light area long distance. Yet with weather like it has been long range viewing isn't the best idea lol

But yeah for others box cameras with C/CS lens would be best bet, working on cameras without good working knowledge of electronics or ability to repair something you might break is not a smart idea
 
Of note, when I did low voltage/security installs, many times when I or one of my employees removed a faulty camera that is headed to electronics recycling, I saved the lenses, so I have a reasonable collection of them shoved into a block of foam!
 
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