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Wide Angle lens for FI8905W?

General discussion regarding Foscam IP Cameras

Re: Wide Angle lens for FI8905W?

Postby rrs18 » Fri Jul 08, 2011 9:30 am

I just noticed that the grass is now green instead of pink on my 8905. I am guessing that this is due to the rain and the lack of sunshine. The grass is soaked and (presumably) unable to reflect the rays that make the grass appear pink to the camera.

Can this be correct or am I all wet?

Thanks

Russ
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Re: Wide Angle lens for FI8905W?

Postby rrs18 » Fri Jul 08, 2011 11:21 am

Two Pics with 8905. Sunny day and rainy day
Attachments
A_Sunny Day.jpg
A_Sunny Day.jpg (7.88 KiB) Viewed 3637 times
B_Rainy Day.jpg
B_Rainy Day.jpg (9.03 KiB) Viewed 3637 times
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Re: Wide Angle lens for FI8905W?

Postby rrs18 » Thu Jul 14, 2011 12:26 pm

rrs18 wrote:I've seen the pics posted earlier and it (wax paper) appears to be a good solution. It's just that I'm reluctant to take the camera down from its perch, and then take it apart if it may not work
I tried the wax paper thing without success. So, i removed it. Will keep looking for a solution
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Re: Wide Angle lens for FI8905W?

Postby JDMonster » Fri Jul 15, 2011 12:41 pm

I have this same camera and it doesnt adjust to Brightness on its own. Is this common? is there a setting ive overlooked? It doesnt work with either the software it came with or blue iris.
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Re: Wide Angle lens for FI8905W?

Postby rrs18 » Sat Jul 16, 2011 2:57 pm

JDMonster wrote:I have this same camera and it doesnt adjust to Brightness on its own. Is this common? is there a setting ive overlooked? It doesnt work with either the software it came with or blue iris.


Yes, it is common.
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Re: Wide Angle lens for FI8905W?

Postby shai » Tue Jul 26, 2011 2:35 am

Hi all,

I'm a newbie here and have the same problem with the 4mm lens in the FI8905W model, as most of you.
Well, I found out (not a great invention ;) ) that if I reduce the resolution from 640x480 to 320x240 the picture gets a bit better.
Did any of you tried this already???

Thanks,
Shai.
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Re: Wide Angle lens for FI8905W?

Postby Zaeolos » Sat Jul 30, 2011 2:06 pm

I just installed the new 4mm lens and added the wax paper last night. It does seem to spread out the IR light at night. I also have the ring around the outside of the picture at night now because the lens is shorter, but it's not terribly bad. I may try a second layer of wax paper as I believe the IR light can be toned down a bit. Also if you do this, make sure you cut out the place for your sensor.
Attachments
HC3.20110730_011412_2.jpg
This is the 4mm lens with wax paper. I still need to do some focus adjustments.
HC3.20110730_011412_2.jpg (73.8 KiB) Viewed 3529 times
HC3.20110729_210323_1.jpg
This is the 6mm lens with no wax paper.
HC3.20110729_210323_1.jpg (60.27 KiB) Viewed 3529 times
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Re: Wide Angle lens for FI8905W?

Postby Zaeolos » Sat Jul 30, 2011 4:57 pm

And here is an image of the camera with the wax paper.
Attachments
IMG_20110730_165711.jpg
IMG_20110730_165711.jpg (61.06 KiB) Viewed 3529 times
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Re: Wide Angle lens for FI8905W?

Postby TPS Foscam » Fri Aug 19, 2011 1:33 pm

The problem with the wax paper solution is that it diffuses the light and limits the range of the IR lights considerably. What I've found that works much better is a prismatic lens like what is used for overhead flourescent lights (drop ceiling panel). I used a couple of hole cutter blades to get the dimensions just right and it works great. It reflects the light in an even pattern and covers the entire area of the wide angle lens. The distance is minimally affected, but I can still see out about 100 feet which is much better than when I tried the wax paper (about 60 feet).
prismatic.jpg
prismatic lens to disperse IR better
prismatic.jpg (78.46 KiB) Viewed 3469 times
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2.8mm Wide Angle lens focus problem for FI8905W

Postby JRHZ28 » Sat Aug 20, 2011 3:27 pm

Hello. I purchased a FI8905W and after reading the thread and being
very handy I ordered a 2.8mm lens and installed. My ONLY issue was the
focus. I could not screw the lens down far enough to get it into focus. When I did (with mild force) it put to much pressure on the IR filter shutter and it would not work properly. I notice in a previous post of how to do the swap that the CCD he was holding did not have the IR filter shutter on it therefore allowing the 2.8 lens to get closer and focus properly. ( I guess? ) I ordered a 4mm from monoprice to see if it will
focus any better. Anyone had or having this probem ? know of a fix or
lens that will work with this IR filter shutter?

Thanks!
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