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StoneNYC
10-28-2013, 08:57 AM
Hmm I have the B+W #92, it's a 650 cutoff but says passes 50% from 650-700 and 90% from 730-2000

The next step up is a #93 but it starts at 1% at 800 so 800 is beyond the Rollei as far as I understand?

Did I get the wrong version? I know people use the R72 but I don't like the Hoya filters and thought the B+W 92 was the same filter?


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MattKing
10-28-2013, 12:03 PM
Hmm I have the B+W #92, it's a 650 cutoff but says passes 50% from 650-700 and 90% from 730-2000

The next step up is a #93 but it starts at 1% at 800 so 800 is beyond the Rollei as far as I understand?

Did I get the wrong version? I know people use the R72 but I don't like the Hoya filters and thought the B+W 92 was the same filter?


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I think your problem is as much with your exposure choices as it is with filter choice. Although that 50% cutoff between 650-700 lets in a lot of visible light.

Of course, you may just be unlucky in your choice of subjects :).

StoneNYC
10-28-2013, 12:19 PM
I think your problem is as much with your exposure choices as it is with filter choice. Although that 50% cutoff between 650-700 lets in a lot of visible light.

Of course, you may just be unlucky in your choice of subjects :).

Well the literature on B&H for Hoya is less clear.. And Hoya saying it has no transition point from full throughput to none at all as a cutoff seems unlikely ... There must be some transition, so I assumed B+W was just more accurate with it's description but had the same characteristics as the Hoya... Anyone know officially?




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sly
10-28-2013, 01:00 PM
All this discussion is just increasing my grief for the disappearance of HIE. I have a single roll left in the freezer. Just needed a red 25. Could compose and focus with the filter on and hand-hold the camera. Back in the day, it was my favorite summer film. Nothing else worked on those blazing days. Will never be able to take photos like this with Rollei or Efke.

http://silverlilly.zenfolio.com/p547650965/h2cd99ae5#h2cd99ae5

This is a high noon shot, but over a decade old.

Sigh....

adelorenzo
10-28-2013, 01:25 PM
At my latitude the light at high noon gets pretty directional this time of year making for some interesting shadows. (As an aside: It's a shame that this assignment doesn't cover December as high noon is part of the golden hour up here!)

These shots are taken last weekend with my Pentax 645NII, Tri-X developed in HC-110. Mix of clouds and open sun. Sorry about the excessive grain I am terrible at scanning. The prints are coming out really nice!

http://farm4.staticflickr.com/3749/10487990974_271bbc9c75.jpg (http://www.flickr.com/photos/delorenzo/10487990974/)
Carcross desert (http://www.flickr.com/photos/delorenzo/10487990974/) by Anthony DeLorenzo (http://www.flickr.com/people/delorenzo/), on Flickr

http://farm8.staticflickr.com/7341/10487992006_1ccab591f5.jpg (http://www.flickr.com/photos/delorenzo/10487992006/)
Tracks in the Carcross desert (http://www.flickr.com/photos/delorenzo/10487992006/) by Anthony DeLorenzo (http://www.flickr.com/people/delorenzo/), on Flickr

polyglot
10-28-2013, 05:33 PM
Hmm I have the B+W #92, it's a 650 cutoff but says passes 50% from 650-700 and 90% from 730-2000

The next step up is a #93 but it starts at 1% at 800 so 800 is beyond the Rollei as far as I understand?

Did I get the wrong version? I know people use the R72 but I don't like the Hoya filters and thought the B+W 92 was the same filter?

Yeah, you got the wrong version. You're letting in so much red light that the IR exposure is swamped by the visible exposure.

StoneNYC
10-28-2013, 05:38 PM
Yeah, you got the wrong version. You're letting in so much red light that the IR exposure is swamped by the visible exposure.

OH!

Someone said the #93 since it starts at 800 would expose BLANK, is this wrong?

It would surprise me if B+W just didn't make a filter that all the other companies make...


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polyglot
10-28-2013, 06:07 PM
It looks like B+W don't make an appropriate filter. The 092 and 093 are gradual-cutoff filters like Hoya's RM series whereas what you want is a sharp-cutoff filter like the R72.

Hoya specifications (http://www.hoyaoptics.com/color_filter/ir_transmitting.htm), noting (from the graph) that the R72 transition band covers only ~710-740nm.

polyglot
10-28-2013, 06:08 PM
All this discussion is just increasing my grief for the disappearance of HIE. I have a single roll left in the freezer. Just needed a red 25. Could compose and focus with the filter on and hand-hold the camera. Back in the day, it was my favorite summer film. Nothing else worked on those blazing days. Will never be able to take photos like this with Rollei or Efke.

http://silverlilly.zenfolio.com/p547650965/h2cd99ae5#h2cd99ae5

This is a high noon shot, but over a decade old.

Sigh....

That's awesome.

StoneNYC
10-28-2013, 06:08 PM
It looks like B+W don't make an appropriate filter. The 092 and 093 are gradual-cutoff filters like Hoya's RM series whereas what you want is a sharp-cutoff filter like the R72.

Hoya specifications (http://www.hoyaoptics.com/color_filter/ir_transmitting.htm), noting (from the graph) that the R72 transition band covers only ~710-740nm.

Darn.... That was an expansive filter! :(

Anyone want to trade? I doubt B&H would take it back now...


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Fixcinater
10-28-2013, 10:05 PM
I'll sneak in a last-minute entry.


Pentax 6x7 MLU
Pentax 67 45/4.0 @ f/8.0
Kodak TXP 320 at 200, 8 mins in HC110 1:49

TheToadMen
10-29-2013, 01:23 AM
I'll sneak in a last-minute entry.

Pentax 6x7 MLU
Pentax 67 45/4.0 @ f/8.0
Kodak TXP 320 at 200, 8 mins in HC110 1:49



Nice.
A 45 mm lens at 6x7 gives a very nice angle of view.

BTW:
Is it a self portrait? :)
(shadow @ bottom, left corner)

sly
10-29-2013, 11:38 PM
Great to see more entries!

Like your desert shots, adelorenzo. Most folks don't associate the Yukon and a desert. Is this the one that FixinqHarper ATV'd across?

Yours looks deserty too, Fixinator. A place I'd want to stay out of the sun at high noon. American southwest?

Fixcinater
10-30-2013, 12:15 AM
Sly, you're right. About as far south and west as you can go in the USA: San Diego. No cloud cover that day.

Bert, yes, I admit my head made a sneak appearance. Still getting used to the crop from viewfinder on the Pentax.

adelorenzo
10-30-2013, 12:50 AM
The Carcross desert is billed as the world's smallest desert, basically an old lake bed but it's got dunes and whatnot. It was indeed where the PM was ATVing last year, good memory!

StoneNYC
10-30-2013, 04:12 PM
OK!!! soo ... MSA official entry #1 that was shot for the purposes of the MSA...

SADLY this is the B&W flower and not the Color IR image... I wasn't able to get that processed... this is a different day as well, but I figured, why not throw in a flower shot... this is the lesser (in my opinion) image for submission, but why not, who doesn't like flowers... I'll upload to the gallery as well, but these are slightly bigger for full effect.

76226

StoneNYC
10-30-2013, 04:13 PM
AND last but not least... I really like this image best, I hope I win! :) ... and proof that it's exactly high noon! :) Neither image was edited or anything, straight scan, EFKE-itis and all... ugh...

Shot on my Yashica44LM on 127 film :)

76227

NedL
10-31-2013, 12:42 AM
... and proof that it's exactly high noon! ... Definitely hi-noon! What is Efke-itis?

TheToadMen
10-31-2013, 02:23 AM
Hi everyone,
It's the last day to post for this assignment. So, take a day off, load your camera and fire away at noon, jump into your darkroom and produce some nice prints to scan and upload here before midnight.
Let's give Martin something to do this week, choosing who lived up the best to his assignment.

Load them up !!

StoneNYC
10-31-2013, 02:40 AM
Definitely hi-noon! What is Efke-itis?

I don't have the original file on hand to "zoom" to a 1:1 to show you, but basically it's something EFKE was known for, it's bad emulsions, dust in the factory or just production issues where there are white and black spots all over your image, in a small image they aren't noticeable but an 8x10 or bigger and it REALLY shows and it's ugly.

I'll post something tomorrow to show you.


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