raspberry pi noir

panning to set up a rpi 'noir' camera soon - it comes with no IR filter.
Question: how about an inexpensive source for an IR blocking filter AND
an IR passing, visible blocking filter?

On 2014-12-01 15:41:03 +0000, ray carter said:

panning to set up a rpi 'noir' camera soon - it comes with no IR filter.
Question: how about an inexpensive source for an IR blocking filter AND
an IR passing, visible blocking filter?

What do you call inexpensive?

This is always a good place to start.
http://www.lifepixel.com

--
Regards,

Savageduck

On Mon, 01 Dec 2014 09:17:38 -0800, Savageduck wrote:

On 2014-12-01 15:41:03 +0000, ray carter said:

panning to set up a rpi 'noir' camera soon - it comes with no IR
filter.
Question: how about an inexpensive source for an IR blocking filter AND
an IR passing, visible blocking filter?

What do you call inexpensive?

This is always a good place to start. http://www.lifepixel.com

Hopefully, less than the Pi!

In article , ray carter
wrote:

panning to set up a rpi 'noir' camera soon - it comes with no IR filter.
Question: how about an inexpensive source for an IR blocking filter AND
an IR passing, visible blocking filter?

ebay, but quality may not be the best.

On 01/12/2014 15:41, ray carter wrote:

panning to set up a rpi 'noir' camera soon - it comes with no IR filter.
Question: how about an inexpensive source for an IR blocking filter AND
an IR passing, visible blocking filter?


IR blocking filter aka hot mirror you can get from amateur astronomy
suppliers although it probably will cost more than the rpi.

http://www.telescopehouse.com/acatal...25____510.html

Wratten 87 is the usual choice for near IR long pass although you can
get custom colloidal glass filters at any cutoff in steps of 10nm.
(for a price)

http://www.edmundoptics.co.uk/optics...s-filters/1918

Cheap IR pass filters are easier the unexposed tail of slide film will
block all visible light and pass near infrared pretty well. If you have
a long enough piece it is interesting to put it across your eyes and
wait until they adapt to the low light levels. You will after about a
minute get to see the world again in pseudo false colour near IR. Green
foliage looks very bright and sky looks much darker.

--
Regards,
Martin Brown

On 2014-12-03 16:41:27 +0000, "J. Clarke" said:

In article 2014120109173899359-savageduck1@REMOVESPAMmecom,
says...

On 2014-12-01 15:41:03 +0000, ray carter said:

panning to set up a rpi 'noir' camera soon - it comes with no IR filter.
Question: how about an inexpensive source for an IR blocking filter AND
an IR passing, visible blocking filter?

What do you call inexpensive?

This is always a good place to start.
http://www.lifepixel.com

Duck, you might want to google "rasperry pi". His whole setup so far
would have been under a hundred bucks.

Then I am not going to be a big influence in anyway, am I?

I started out by asking the OP what he called inexpensive (a vague term
at best), and if he can get things done for under $100, good luck to
him.


--
Regards,

Savageduck

On Wed, 03 Dec 2014 15:10:50 -0500, J. Clarke wrote:

In article 2014120308492945068-savageduck1@REMOVESPAMmecom,
says...

On 2014-12-03 16:41:27 +0000, "J. Clarke"
said:

In article 2014120109173899359-savageduck1@REMOVESPAMmecom,
says...

On 2014-12-01 15:41:03 +0000, ray carter said:

panning to set up a rpi 'noir' camera soon - it comes with no IR
filter.
Question: how about an inexpensive source for an IR blocking filter
AND an IR passing, visible blocking filter?

What do you call inexpensive?

This is always a good place to start. http://www.lifepixel.com

Duck, you might want to google "rasperry pi". His whole setup so far
would have been under a hundred bucks.

Then I am not going to be a big influence in anyway, am I?

I started out by asking the OP what he called inexpensive (a vague term
at best), and if he can get things done for under $100, good luck to
him.

Don't be so prickly. Raspberry pi is (for nerds like me anyway) a fun
and cool thing--if you didn't know about it before you might find it
interesting to read about.

Exactly. The point is not to make it high quality photographic equipment,
but to have some fun exploring the possibilities.

On 12/4/2014 8:39 AM, Whisky-dave wrote:

snip


But going by some on the NG you can;t be a p[hotographer unless you spend a fortune on equipment.


Very few would say that. And IMHO, few who might, would rarely be a good
photographer.


--
PeterN

On 2014-12-05 11:27:05 +0000, Whisky-dave said:

On Thursday, 4 December 2014 19:09:53 UTC, PeterN wrote:
On 12/4/2014 8:39 AM, Whisky-dave wrote:

snip


But going by some on the NG you can;t be a p[hotographer unless you
spend a fortune on equipment.

Very few would say that. And IMHO, few who might, would rarely be a good
photographer.

--
PeterN

Well how can you get a 'good' photo with just a 5meg pixel camera and
think of the size of the actual sensor, you'd be laughed at if you
entered in to a competition up against even the average DLSR camera.

Now you sound like a megapixelist. Here are a couple of shots from my
very first digital camera, a Nikon CoolPix E775 which shot images using
a 2.1 MP sensor.
https://dl.dropbox.com/u/1295663/FileChute/DSCN0701A.jpg
https://dl.dropbox.com/u/1295663/FileChute/DSCN0250A.jpg


I really don;t see the quality of a pi camera at 17 quid which includes
the lens, sensor is fixed focus and fixed aperature being able to
comptete.


--
Regards,

Savageduck

On 2014-12-05 13:32:31 +0000, Whisky-dave said:

On Friday, 5 December 2014 12:33:08 UTC, Savageduck wrote:
On 2014-12-05 11:27:05 +0000, Whisky-dave said:

On Thursday, 4 December 2014 19:09:53 UTC, PeterN wrote:
On 12/4/2014 8:39 AM, Whisky-dave wrote:

snip


But going by some on the NG you can;t be a p[hotographer unless you
spend a fortune on equipment.

Very few would say that. And IMHO, few who might, would rarely be a good
photographer.

--
PeterN

Well how can you get a 'good' photo with just a 5meg pixel camera and
think of the size of the actual sensor, you'd be laughed at if you
entered in to a competition up against even the average DLSR camera.

Now you sound like a megapixelist. Here are a couple of shots from my
very first digital camera, a Nikon CoolPix E775 which shot images using
a 2.1 MP sensor.
https://dl.dropbox.com/u/1295663/FileChute/DSCN0701A.jpg
https://dl.dropbox.com/u/1295663/FileChute/DSCN0250A.jpg

These are OK, for the camera used and I noticed you haven;t bothered
with a ID that might prevent others copying them and using them in a
way you might not want.

WTF are they going to use them for?
They are what they are, snapshots from around 2001 shot on an E775, &
that was an actual 1.9 MP on a 2.1 MP sensor.

The first digital camera I used was a ricoh 300,000 pixels :-)
well that's how the it was advertised.



--
Regards,

Savageduck