When trying to figure the focal length to ensure you get the correct fix lens camera, how is the height of the camera mounted factored in?
Focal length?
- Thread starter TheE
- Start date
The height affects everything.
Here is a post showing how setting the distance to ID and focal length and then changing the height will vary the dead zone under the camera. There is a link to the tool, try it out.
ipcamtalk.com
Below is the link to my thread that I usually post whenever someone asks about cam placement, focal length, and height. It shows the difference that can be had by changing mounting height or going with a more appropriate focal length. In some instances I would have thought that going full 12mm on the varifocal would have been life changing, but it wasn't. However, compared to a similarly positioned 2.8mm it was night/day, but until you see what you can see (or not see) with a given focal length it can be hard to visualize what will work for a specific location.
ipcamtalk.com
Here is a post showing how setting the distance to ID and focal length and then changing the height will vary the dead zone under the camera. There is a link to the tool, try it out.
Help with choosing cameras and placment
Hi, Just moved in to a new house. Need some help choosing what IP cams to buy and what type of cams. I already have CAT6 wires to to marked locations in the pic, and it a brick wall, so no a lot of adjustment there. I don't know what type of cameras to choose (bullet vs torrent?) and what...
Below is the link to my thread that I usually post whenever someone asks about cam placement, focal length, and height. It shows the difference that can be had by changing mounting height or going with a more appropriate focal length. In some instances I would have thought that going full 12mm on the varifocal would have been life changing, but it wasn't. However, compared to a similarly positioned 2.8mm it was night/day, but until you see what you can see (or not see) with a given focal length it can be hard to visualize what will work for a specific location.
"I want 2.8mm cameras everywhere to see everything..." - This is why you need specific FOVs with purposeful focal lengths.
I am treating this as a living document and will update it with new captures, information, etc from time to time since the journey and knowledge gained never ends. Even though it was originally posted in May of 2023, it is still very much relevant. I have gained a lot of knowledge since I...
Thank you for the thread link. You made my dayThe height affects everything.
Here is a post showing how setting the distance to ID and focal length and then changing the height will vary the dead zone under the camera. There is a link to the tool, try it out.
Help with choosing cameras and placment
Hi, Just moved in to a new house. Need some help choosing what IP cams to buy and what type of cams. I already have CAT6 wires to to marked locations in the pic, and it a brick wall, so no a lot of adjustment there. I don't know what type of cameras to choose (bullet vs torrent?) and what...
Below is the link to my thread that I usually post whenever someone asks about cam placement, focal length, and height. It shows the difference that can be had by changing mounting height or going with a more appropriate focal length. In some instances I would have thought that going full 12mm on the varifocal would have been life changing, but it wasn't. However, compared to a similarly positioned 2.8mm it was night/day, but until you see what you can see (or not see) with a given focal length it can be hard to visualize what will work for a specific location.
"I want 2.8mm cameras everywhere to see everything..." - This is why you need specific FOVs with purposeful focal lengths.
I am treating this as a living document and will update it with new captures, information, etc from time to time since the journey and knowledge gained never ends. Even though it was originally posted in May of 2023, it is still very much relevant. I have gained a lot of knowledge since I...
Thank you for the thread link. You made my day. Academic challenges often come knocking at the most inconvenient times. Late one night, faced with a mountain of assignments, I stumbled upon this Custom Essay Writing Service | 200+ Writers | CustomWriting custom writing service. Little did I know, it would be my lifeline – an unwavering support system, standing guard 24/7 against the unpredictable tides of academia.
Last edited: