| Author | Thread |
|
|
08/11/2005 02:01:09 PM · #26 |
Originally posted by ldowse:
Just a few follow-up questions
1.) Do you have any input on the "stacking with a #25 red" suggestion earlier in this thread?
2.) Am I wasting my time with this approach or is this a good way to wet my appetite for IR? |
I step out for the morning and all kind of discussion pops up:)
Hey, I mentioned the #25 red because it helps improve contrast when shooting in B&W. I had read thi in a book about Infrared photography, but I was wondering if anyone had any practical experience with this.
Anyhow, for $17.39, I will try it and report back to you all:)
Thanks for the good discussion.
|
|
|
|
08/11/2005 02:20:06 PM · #27 |
The red intensifier (#25) will not add anything to a #72 or denser IR filter, the red frequencies that are outside of the #72 filter will not make it thru anyway.
Filters are like Funnels... so having a big funnel and then a very small funnel after that...makes the big funnel useless. |
|
|
|
08/11/2005 07:15:35 PM · #28 |
I bought my Rebel XT last week and decided to experiment with IR using the kit lense and a Hoya R72, I found some of my images have a little blowout.
thanks to the advice on these forums I will now consider a new lens.
but otherwise I have enjoyed the results from it, below, one of my first with a little post processing.
Message edited by author 2005-08-11 19:16:35. |
|
|
|
08/11/2005 07:24:19 PM · #29 |
rvigo, this is a cool image, I can see where the kit lens has a "hol" (next to the house).
A trick: because you will be ending with a lot of white, get your focus and exposure with no IR filter, then switch you lens to MF and without changing your exposure time, step you F-stop 1stop darker. this way you will be able to get your detail in the whites back in post.
There is also a trick where you under focus by about -5% and +5%...but that takes a lot of experimenting and bracket shooting |
|
|
|
08/11/2005 08:22:39 PM · #30 |
Thanks for the tips, I did do the steps like you mentioned, and do a range of shots with different F-stops, It was my post processing that put the image out of focus, I thought the original looked a little flat so I added a hint of lighting which pushed the focus out (and not to mention I forgot to change the ISO from 800, oops!! but I feel it added to the effect!).
The "hol" is dead in the centre where the corner of the house is. (looks like I didn't disguise it as well as I thought,lol).
Still, I am getting to grips with the XT, and made the jump from an Fuji S602, and am making a few mistakes! but am getting there.
Thanks |
|
|
|
08/11/2005 09:20:38 PM · #31 |
I've never tried using a red filter with infrared, but I did one try adding a polarizer and the sky came out much darker.
|
|
|
|
08/11/2005 09:24:17 PM · #32 |
Yeah, the verdict is still out on Polariser + Ir !
The good thing about IR filters is that it's ok to have noisy images (iso 400+) since they will either be colorised or B&w and that it hads a feeling of texture.
an IR image will never truly be sharp, the frequency shift pretty much garanties that. |
|
|
|
08/11/2005 09:42:55 PM · #33 |
Wolf here in Dallas has the Hoya R72 for under $40.00 but said it would take a long time to get in.."out of stock". So I opted to get mine off Ebay...new, never opened and only cost me $37.15 that included $6 shipping from Greece..took 5 days. Just my 2Cents
|
|
|
|
08/12/2005 08:35:14 AM · #34 |
Originally posted by Truegsht:
Wolf here in Dallas has the Hoya R72 for under $40.00 but said it would take a long time to get in.."out of stock". So I opted to get mine off Ebay...new, never opened and only cost me $37.15 that included $6 shipping from Greece..took 5 days. Just my 2Cents |
This is for a 58mm (or smaller) lens...as soon as you get to 77mm (or larger) the prices get insane. |
|
Home -
Challenges -
Community -
League -
Photos -
Cameras -
Lenses -
Learn -
Help -
Terms of Use -
Privacy -
Top ^
DPChallenge, and website content and design, Copyright © 2001-2025 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 08/22/2025 07:23:36 AM EDT.
