I'v tryed the Slavich plates PFG-03M., but I'm unsure about the exposure-times compared to AGFA? I'v achieved (a rel. bright and noice-free images/red -orange) the best results when exp. the plates 25 X AGFA. I'v used GP-2 developer and Kodak rapid Fix. When exp. the plates 100 X AGFA the results was appr. the same as 25X. With shorter exp. times the holograms are encumbed with a blue haze. Please give me some hints about the processing techniques and exp. times..rorasmu@online.no
Steve Michael - Wed, Mar 10, 99 09:17:30 PM
Hi Ronny: my exposures with PFG-01 are twice the time of my 8E75 agfa film. That give me a density of 1.0. I used an Infiniter 200 laser pointer from Quarton with a wavelength of 650nm. I processed in Pyrogallol developer for 5 minutes, stop bath for 2 minutes, wash 5 minutes, dichromate bleach, wash 5 minutes, photoflo. Agitation was continues during development. The PFG-03 is a bit different. The exposure was 4 times 8E75 and agitation is critical. In a 4x5 tray, agitation should be circular for the first 5 seconds, then let sit without agitation for 30 seconds. Agitate again in a circular motion for 5 seconds, and let sit again for 30 seconds. Continue doing this for the full 5 minutes. The agitation method is very critical, just like Kodak's Tech Pan film. If you continously agitate left to right and up and down, you'll get a cross-like density down the middle from top to bottom and left to right.
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Frank - Thu, Mar 11, 99 11:41:44 PM
Hi Steve. Were the holograms you mention in the above post (3/10/99) reflection or transmission holograms? Interesting about the development/agitation technique with the PFG-03. Good tip.
207.16.159.220
Regina M. Barrera - Sun, Mar 14, 99 04:50:52 PM
Hello! I am trying to figure out weather I am doing the processes right or just obtain some bad plates. I am a complete novice to holography as well as developing. I am doing the simple (single beam using 5mW modulated He-Ne laser) reflection. I take it to the GP-2 developer and let it stand with no agitation for 14 then rinse under water for 3 then air dry - this is to the developing instruction given through Arbor. I obtain nothing but a nice "tan" on the plates. I noticed from another site that to use a hardner, rinse, GP-2 (agitate in cycles), rinse, and then use ethyl alchohol. I did this and obtain still nothing but instead of just a clear "tan" now I have a fog tan on the lens. I open another box of plates to see if the other was just bad but I got the same thing. What is wrong with my setup? 198.216.114.185
Ronny - Mon, Mar 15, 99 02:02:38 PM
Hei Steve, thanks a lot for all your good tip. Congratulate with your New discovery (7,5 feet depth sounds magnificent in my "big" ears). Well, I'm sorry to say that the PFG-03M plates are not my very good friend anymore, after experimenting with pyro dev. and circular agitation. The best results that I'v achieved was when exp. 10xAgfa, D=2,5 after 3min. and dichromate bleach (singlebeam reflection hologram). Not as bright as on my BB-plates. Before I'm leaving these plates I will process them in GP-2 dev. and another type of fix I'v received from a Russian friend. I'v achieved a brighter results when dev. in GP-2 for 15min. with no agitation + rapid Fix. I'm allso harden the plates for 4min. before developing them. Ha en fortsatt god dag Steve (pick up your dictionary) 130.67.15.250
Ronny - Mon, Mar 15, 99 03:04:34 PM
Hi Regina. It seem to me that you have to increase the exposuretime??, especially when using GP-2 developer. Try to dip the already made holograms in water and examine the wet holograms against a spot-light. If you do not see a image equal to a rainbow-hologram, try to increase the exp.time. Please allso try Steve Michael's procedure. My advice to you--> try some BB-640 plates the next time you have to order holographic materials-->I can guarantee success.. 130.67.15.250
Benjamin - Thu, Mar 18, 99 03:36:21 PM
Hi all!
we are an Austrian students group trying to make holograms. We use either a 3 mW 675nm diode or a 35 mW 690nm diode, PGF-03M plates and the GP-2 developper for our tries. But we only get photographic representations of the objects we holography (coins) without any depth effect.
could you please tell us what's happening? 195.3.127.140
Frank - Thu, Mar 18, 99 11:16:31 PM
HI Benjamin. I think your group should be using a diode in the 635-650nm range. The 675-690nm diodes are probably too far away from the sensitivity/response curve of the PGF-03M plates.
Frank 207.16.159.168
Frank - Thu, Mar 18, 99 11:24:10 PM
I have to agree with Ronny. Just expose, develop, rinse, bleach, rinse, photo-flo and you're done. Straight Pyro process, nothing fancy. Bright results -- especially with a 650nm diode since the BB-Plates have a nice "spike" in the sensitivity curve at 647nm! If you've ever worked with AGFA, just increase your exposure time by x3 or so (which you have to do with the other materials anyway, if not more), and do everything else the same. Bingo. It doesn't get any easier than that. 207.16.159.168
Steve Michael - Tue, Mar 23, 99 10:42:41 PM
Ronney: I have to agree that the PFG-03 film is nothing compared to Agfa's 8E75HD film. I'm still not convinced that PFG-03 can replace 8E75HD. Thanks for the feedback. 209.122.220.254
Larry W. South - Wed, Mar 24, 99 11:56:10 AM
I have the PFG-03M plates and the GP-2 developer chemicals, but am unwilling to use the chemicals with the 12-year olds around that want to do the hologram experiment for a science fair. Is there any one willing to develop the holograms if we expose the plates? I can supply the chemicals. We intend do the experiment on Sat Mar 27, but not the development. I am in the Kansas City, Missouri area. 12.13.76.200
Ronny - Tue, Mar 30, 99 04:14:55 PM
Greate News: the PFG-03M plates works perfect when making reflection holograms. I'v achieved splendid results after some triel and faults. The main reason why: #1 when mixing the chemicals to make GP-2 , I'V used hot-water (appr. 60 deg.C) and desolved each chemicals at the time. The developer was ready to use when the temp. was under 21 deg.C. Develope for 15min. with no aggitation #2 I'v changed to another Fix (the Kodak Rapid Fix have bad effect on the PFG-03M plates).I'v used Antichlor and Sodium Metabisulphate to make a very good Fix (8min). The PFG-03M plates do NOT need any Latensification-expusure like the PFG-01 plates. Exposure-time is 25xAgfa. My conclusion: PFG-03M plates are a very good substitute to Agfa. Feel free to ask for details..
130.67.15.250
Jaime lopez - Wed, Mar 31, 99 08:46:16 AM
IÄve been doing experiments with PFG03M, I had great results. Only concern is exposure time it is really long which I donÄt like that much and also is a limitant to go further in other techniques. But resolution and brightness of these holograms is great. Thank you Steve Michael and Frank De Freitas for all your advice and tips in getting these holograms.
200.42.17.249
Ronny - Wed, Mar 31, 99 12:21:00 PM
Hi again (Sorry, I'm talking to myself again): Good to hear other holographers that have success with the Russian plates. The first hologram I made today was processed in GP-2 (explained above). Since I'm curious about different kind of Russian developers I made me a new one today, and this time I used the fine grain GP-8 developer invented in the Soviet Union. The results? Well, what shall I say?... "The method employed I would gladly explain. While I have it so clear in my head." (Lewis Carroll, The hunting of the Snark)....."It seems very pretty," she said, "but it's rather hard to understand,"(Lewis Carroll, Alice in Wonderland) 130.67.15.250
JAIME LOPEZ - Wed, Apr 07, 99 08:16:21 PM
For those of you that havenÄt been able to get a spatial filter or didnÄt have the budget to buy one here is something that I did and it works pretty well:
As all we know, spatial filtering becomes very important when we are trying to get clean and bright images without the noise and shadows that are produced by dust and imperfections in your lens or mirrors.
What I did, since I couldnÄt get a spatial filter, was to use aluminum foil, and carefuly made a disk with it and stick it into a ring in such a way that all aluminum surface was very flat like a "drum". Then, using a very small needle, I did a almost invisible hole on the center of my aluminum foil disk. This hole was almost invisible and I did it in such a way that was very rounded (I had to try it so many times but it was worth it). Then I put that disk on a primitive X Y and Z positioner very primitive that I built with some screws and aluminum plates. Total cost of my spatial filter: US$12.oo with mounting..is that cheap enough?? 200.42.8.8
Frank - Sat, Apr 10, 99 10:28:28 AM
Jamie, do you have access to a web page that you could put your spatial filter design on? It would be great for people to be able to build one for $12.00. If you don't have a web page, I'd be happy to put it up at holoworld . . . giving you the credit, of course.
Please let me know: Email -- frank@holoworld.com 207.16.159.179
JAIME LOPEZ - Tue, Apr 13, 99 06:24:53 AM
Frank, unfortunately, I don€t have a web site at this moment, but I will pass you all the information with pictures, drawings and quick procedure to build it.
Thank you 200.42.22.6
Steve Michael - Wed, Jun 16, 99 08:50:16 PM
Heh!!! Where is everyone getting this GP-2 developing kit????? Formulary doesn't carry it. I don't want to be left out, got my own experimenting to do!!!! Boy, do I sound ignorant. 209.122.205.93
Ronny Andreassen - Fri, Jun 18, 99 09:13:48 AM
Hei Steve. Make your own GP2 developer: Consentrated solution: Methyl Phenidone(0,2g) Hydroquinone(5g) Sodium Sulphite (Anhyd)(100g) Potassium Hydroxide(5g) Ammonium Thiocyanate(9g) and Water to 1L. Dev. time 10-15min (D=0,7). I know that you prefer Pyro, BUT I'v achieved much better results with GP-2 + Fix --> OBS! NOT RAPID FIX (brightness 2xAGFA). You'll not belive it before You'v tryed it. Make One 4"x5" hologram and send it to me, and I'll return One of mine back to You--> It's a deal????????? Then we can publish our knowledge to all the people WWW :-) rorasmu@online.no. Ha en riktig god helg.. 130.67.15.242
John John - Fri, Jun 18, 99 02:48:42 PM
Hey Steve, As of 6-17-99 the Photographers' Formulary carries GP-2. In fact I just ordered some GP-3. For everyone else where can I get some good CHEAP high def. holog. film! Can't find any here in Dallas, Tx. help! 152.163.207.183
Steve Michael - Fri, Jun 18, 99 06:31:05 PM
Thanks Ronny and John John. I'll give it a try on both PFG-01 and 03 emulsions. Yes, we'll trade Ronny as soon as I get mine made. Thanks again. 209.122.214.13
Steve Michael - Fri, Jun 18, 99 06:33:41 PM
John John: Try my site: www.3dimagery.com/films.html. Other than Integraf for 8E75HD films/plates, this is my source. Prices and contact info on my page. Good luck 209.122.214.13
Ronny Andreassen - Sat, Jun 19, 99 03:58:09 AM
Remember: the concentrated GP-2 solution mentioned above must be diluted before use: 40ml GP-2 + 1L H2O. A good Fix> Sodium Thiosulphate(cryst.)(160g) Potassium Metabisulphate(40g) and water to 1L. Fixing: 2min. That's all for to day, thank you :-) 130.67.15.242
jerry coleman - Sat, May 06, 00 09:00:34 PM
hey anyone out their got any exposeures time for franks laser the 28 miliwatt a good starting point im going to use pfg-03m film ???whant to do some 4x5 first to test anyone?
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Steve Michael - Tue, May 16, 00 04:20:04 PM
Hi Jerry: the exposure rating for PFG-03M is 2000 microwatts/cm2. PFG-01 can produce excellent reflection and transmission holograms and it's exposure rating if 100 microwatts/cm2. Plus 01 is easier to develop. Doesn't need special agitation. See my site at www.3dimagery.com/films.html. With a power output of 28 mW and spread to a 4x5 (single beam reflection setup), a good starting point would be 8 seconds for a reflection hologram. This would be processed in JD-2 kit for 5 minutes at 70 degrees F. 207.172.11.147
Dave - Tue, Apr 03, 01 02:11:12 PM
How do I get rid of interference fringes on my
holograms? Everything else is good except for
the noise. thanks 138.49.128.171