LinkBack URL
About LinkBacks
Reply With QuoteWell thanks quantum, shotgun and genesisfactor. It was really good. now i know alot more. Mark, i got your last Nitemax, do u have anymore? i want another one or maybe 2.
Having heard back from him yet.Originally Posted by Genesisfactor
...Shotgun, where are my super lenses??!!.
I've been debating what to do with the little lcd. My touchscreen sits in the double din so it's not that useful to me. But seeing the screen can be flipped and reversed, I'm thinking maybe I'll see how well it reflects off some mirror tint.
Maybe I can make it a little hud screen
Well thanks quantum, shotgun and genesisfactor. It was really good. now i know alot more. Mark, i got your last Nitemax, do u have anymore? i want another one or maybe 2.
You guys seem to know quite a bit about this, i am looking at lenses for the cams i ordered yesterday and found these :
Focal length 2.5mm (130°
Focal length 2.8mm (110°
Focal length 4mm (90°
Focal length 6mm (57°
Focal length 8mm (43°
Focal length 12mm (29°
Focal length 16mm (19°
Focal length 25mm (11°15?) lens
Which one would be best for the nitemax for night time driving ?
Transflective Lilliput 8", LV-677DC Core Duo 1,83Ghz, , Mpegbox uSDC20D, Shuttle Express, HQCT, PG XS6600 http://carpc.boyakasha.dk
I got 2 packs with 8 lenses in them (the ones in the previous post) 16 lenses in all, 60$ plus shipping. Hope they work for this cam.
http://cgi.ebay.com/ws/eBayISAPI.dll..._BIN_Stores_IT
Transflective Lilliput 8", LV-677DC Core Duo 1,83Ghz, , Mpegbox uSDC20D, Shuttle Express, HQCT, PG XS6600 http://carpc.boyakasha.dk
By no means a lens expert. Though as long as they are CS-Mount, should be fine. Outside of the focal length, the other issue is the optic of the lens itself. Some are better than others, but what is what, that's out of my domain.You guys seem to know quite a bit about this, i am looking at lenses for the cams i ordered yesterday and found these :
Focal length 2.5mm (130°
Focal length 2.8mm (110°
Focal length 4mm (90°
Focal length 6mm (57°
Focal length 8mm (43°
Focal length 12mm (29°
Focal length 16mm (19°
Focal length 25mm (11°15?) lens
Which one would be best for the nitemax for night time driving ?
You'd probably want to use one of the one 4mm or under.
Here's a pic of my rear view cam that's about 150 degrees sitting on the roof of my car.
Note the fish eye. The pylons in the pic below are the corners of the field of view.
So you probably want around 80-110 degrees (The 4mm or 2.8mm) forward facing. That's going to cover a good deal of space at distance (14ft wide at 5ft for the 2.8mm, 6.6ft at 5ft for the 4mm).
The other thing is the IRs are like a spotlight. They are shiny directly ahead and aren't going to hit much outside of the narrow cone.
A couple random thoughts.
The pic of the ventilation building I took with the zoom lens?
About .8 miles away. Not too shabby
The other is about the nitemax. I fooled around with mounting it were I want. I'm going to have to get a polarizing filter. The reflection of the dashboard on the windshield appearing is horrendous. Can almost not see through it.
Shotgun,
How/where do you intend to put the polarizing filter? I had the same problem, big white splash on the inside of the windshield.
Working on - 2006 Cadillac Escalade with all the TOYS!
COMPLETE! - 2002 Cadillac DTS - Summer 2008 - SOLD SUMMER 2010
COMPLETE! - 1998 Cadillac Deville Concours - Summer 2007 - SOLD SUMMER 2008
Not sure. Have to raid my dad's old 35mm stuff. I know I've seen some filters.
Some
step 1. Get filter
step 2. Underpants
step 3. Solve problem
Just a thought, did you have the IRs on? It's like holding a flashlight up to the windsheild. If you dim it and dont' have the problem. Move the IRs somewhere else.
Look at the f-number of the lens. For night vision, you'd like to see the lowest f-number you can get. An f/2.0 lens is marginally good for night-vision and an f/1.6 is acceptable. The original NiteMax lenses were CS-Mount 12mm f/1.2!By no means a lens expert. Though as long as they are CS-Mount, should be fine. Outside of the focal length, the other issue is the optic of the lens itself. Some are better than others, but what is what, that's out of my domain
If you compare two lenses of the same size (like 12mm, CS-Mount) you'll see the one with the larger glass lens area will have a lower (better) f-number. (And it will be more expensive as a result!) A lower f-number and more glass means more light is collected by the lens -- this is important when night-time light is already at a minimum!
Posting Permissions
Bookmarks