Infrared 31/07/05 - DPChallenge Forums

Canon EF 70-300mm f/4.5-5.6 DO IS USM

07/31/2005 12:05:52 PM · #1

Click here for a couple more!

tq

cpanaioti

Canon EOS-40D

07/31/2005 12:08:52 PM · #2

Those are wonderful. Are you using the Hoya R72 filter? What shutter speed are they taken at?

Canon EF 16-35mm f/2.8L USM

07/31/2005 12:28:30 PM · #3

Originally posted by cpanaioti:

Those are wonderful. Are you using the Hoya R72 filter? What shutter speed are they taken at?

Yup, R72 with 17-40mm

Moving cloud pics, i was using 30sec exposure

Falc

Canon EOS-1D Mark III

07/31/2005 12:56:47 PM · #4

How did you manage to get the colour back in?
The R72 turnes everything bright pink.

Canon EF 16-35mm f/2.8L USM

07/31/2005 01:04:42 PM · #5

Originally posted by Falc:

How did you manage to get the colour back in?
The R72 turnes everything bright pink.

custom white balance

Falc

Canon EOS-1D Mark III

07/31/2005 01:07:59 PM · #6

Oh - you are going to have to tell me a little more about this.
Did you set the white ballance before you shot the image?
What value did you use?

I'm impressed.

Carl Zeiss 35mm f2.4 Jena/Flektogon MC

07/31/2005 01:18:30 PM · #7

Originally posted by Falc:

Oh - you are going to have to tell me a little more about this.
Did you set the white ballance before you shot the image?
What value did you use?

I'm impressed.

i just take a picture of a patch of brightly lit grass. And use the image for custom white balance.

Images taken with that CWB will have a 'near B&W feel'.

Uusilehto

Canon EOS-1D

07/31/2005 01:54:18 PM · #8

Wouldn't it be a better idea to just shoot RAW and set the WB to your liking in whatever you use to convert your raw pics?

Canon EF 70-300mm f/4.5-5.6 DO IS USM

07/31/2005 10:55:54 PM · #9

my peecee to slow to process raw files... :(

cpanaioti

Canon EOS-40D

07/31/2005 11:05:51 PM · #10

Originally posted by zerocusa:

my peecee to slow to process raw files... :(

... and it would be a pain to adjust every shot.

pgatt

Canon EOS-5D

Canon EF 16-35mm f/2.8L USM II

08/01/2005 03:44:28 AM · #11

These are my latest infrareds with my usual set-up - NightShot mode, R72 and an ND8, from the Sydney DPC GTG.

Love yours, never thought of using custom white balance on them. Looks awesome.

Message edited by author 2005-08-01 03:47:45.

akshayvh

Canon EOS-7D

Canon EF 17-40mm f/4L USM

08/01/2005 03:56:49 AM · #12

Originally posted by zerocusa:

i just take a picture of a patch of brightly lit grass. And use the image for custom white balance.

Images taken with that CWB will have a 'near B&W feel'.

Is your 300D a modified one? Did you remove the IR cut filter?

asitv

Canon EOS-80D

Canon EF-S 18-135mm f/3.5-5.6 IS USM

08/01/2005 09:08:55 AM · #13

Gotta learn a lot from you guys.. my recent interest in IR and day's one shoot with my new IR72 has resulted in a lot of noise and pathetic pictures....
1
2

These were taken at 6 secs, F8, 800ISO using canon 18-55 lens at about 50mm. I guess I need to tone down the ISO to about 200.

Also no post processing would help me bring it to 'whiter' effect than the current red.

:-(

Anyone helping??? All help is greatly appreciated.

Truegsht

Canon EOS-400D Rebel XTi

Canon EF 28-135mm F/3.5-5.6 IS USM

08/01/2005 09:20:22 AM · #14

I learned really fast that the Canon 18-55 lens has a bad "hot spot" giving a halo in the middle of the photo. I decided to go out and buy a Sony F707 just for IR work. Here is a link to some of my pics this past week.

IR Gallery

asitv

Canon EOS-80D

Canon EF-S 18-135mm f/3.5-5.6 IS USM

08/01/2005 10:08:13 AM · #15

Originally posted by asitv:

Bump...

Nikon AF-S DX Zoom-Nikkor 17-55mm f/2.8G IF-ED

08/02/2005 09:30:01 AM · #16

Originally posted by asitv:

try using ISO 100, f4 around 15 sec exposure. And of course, on a tripod. In the end it depends how strong is the sun shine on the spot u are shooting

1. Wait for a sunny day, go to a park or anywhere that have trees(its everywhere lah) with your camera and tripod. Before you start, do a custom white balance for your digicam WITH your R72 filter on. Either on a bright patch of greens or the blue sky, results will differ slightly.

2. After you do your custom WB, set your digicam to custom WB.

3. Attach your camera to your tripod, camera's setting is as per your preference. Shoot to your preferred composition.

4. Open images in any image editor. Do a auto contrast if your images are underexposed due to the filter. Select Channel Mixer, select Red Channel in Channel Mixer, slide your Red percentage to 0% and Blue to 100%. Now select Blue Channel in Channel Mixer, slide your Blue percentage to 0% and Red to 100%. That's the basic process!!!

5.Of course you can still further tweak your colours to your preference.

qmdi

Nikon D810

08/02/2005 09:39:07 AM · #17

Originally posted by zerocusa:

Click here for a couple more!

tq

Hey Ching,

Would it be possible for you to post the photo before you did the post processing so we can see the before and after. I'm curious to see what the raw file looked like with the custom white balance before any processing.

It does not have to be the photo above, any photo will do.

Thanks!

asitv

Canon EOS-80D

Canon EF-S 18-135mm f/3.5-5.6 IS USM

08/02/2005 09:55:28 AM · #18

Originally posted by zerocusa:

1. Wait for a sunny day.... Before you start, do a custom white balance for your digicam WITH your R72 filter on. Either on a bright patch of greens or the blue sky, results will differ slightly.

2. After you do your custom WB, set your digicam to custom WB.

Thanks a lot Zerocusa for explaining this. I have another question.

Can you please explain the custom WB process again.... If I understand right you are asking me to take a picture if the clouds / bright grass with the filter on and then use WB from that picture.
I may sound stupid but this camera (300d) and in general the WB process itself is new for me.
Please bear with me and if you think it is too trivial then you may PM me ...

Also London these days is mostly heavy clouds with low light so I will wait to shoot next on a sunny day.

08/03/2005 06:21:53 AM · #19

Originally posted by asitv:

Thanks a lot Zerocusa for explaining this. I have another question.

Can you please explain the custom WB process again.... If I understand right you are asking me to take a picture if the clouds / bright grass with the filter on and then use WB from that picture.
I may sound stupid but this camera (300d) and in general the WB process itself is new for me.
Please bear with me and if you think it is too trivial then you may PM me ...

RTFM =p