Search found 280 matches

by lobaz
Wed Mar 19, 2014 3:34 pm
Forum: General Holography
Topic: Issues with developing
Replies: 38
Views: 12722

Issues with developing

smirholo wrote:But I can say that it is better GP-2 for such emulsions.
Sorry my english not allow me to explain it more clearly.
No problem, Valery. I will try it, thank you for the advice. I have almost no experience with physical developers, I will need a stroke of luck.
by lobaz
Wed Mar 19, 2014 11:12 am
Forum: General Holography
Topic: Issues with developing
Replies: 38
Views: 12722

Issues with developing

I will try it. Do you have any idea why Geola recommends SM-6 + PBU/Amidol? Does it produce comparable results?
I also wonder why Ed Wesley was so successful with cold JD-4 processing while I got so dim image...
by lobaz
Wed Mar 19, 2014 9:00 am
Forum: General Holography
Topic: Issues with developing
Replies: 38
Views: 12722

Issues with developing

Which developer do you use? For PFG-03M? Valery. I must check the notes, but if I remember correctly I tried various exposures with JD-4, JD-2/CWC2, TJ-1, SM-6, Pyro, Ultimatte, ZIP. I tried bleaches JD-4, EDTA, PBU-Amidol, JD-2/dichromate. I did not try every developer+bleach combination but I tri...
by lobaz
Tue Mar 18, 2014 10:54 am
Forum: General Holography
Topic: Issues with developing
Replies: 38
Views: 12722

Issues with developing

Hi, holomark, I just want to tell you that I have the same problems with Slavich material - I cannot get any decent hologram with either PFG03M or VRP-M. I saw the same issues you describe especially with PFG03M - fogged plates, extreme rapid development, weird and long drying. I have tried many exp...
by lobaz
Thu Feb 20, 2014 5:45 am
Forum: General Holography
Topic: Silver Halide Processing Formulae
Replies: 1
Views: 1516

Silver Halide Processing Formulae

Great work, thanks!
by lobaz
Mon Feb 17, 2014 10:33 am
Forum: For Sale / Want to Buy / Trade
Topic: Monochrome and Color Denisyuk Holograms from China
Replies: 61
Views: 25197

Monochrome and Color Denisyuk Holograms from China

Great work!
I will definitely order some material and holograms.
Be sure I will check often :)

Petr
by lobaz
Fri Oct 18, 2013 3:34 am
Forum: General Holography
Topic: RGB LED
Replies: 19
Views: 6530

RGB LED

Joe Farina wrote:Here's another...
It would be great if you take some photographs and post the results.
by lobaz
Wed Oct 16, 2013 4:53 am
Forum: General Holography
Topic: RGB LED
Replies: 19
Views: 6530

RGB LED

Well, it is necessary to test. For example, look at these two: halogen_source_front_mini.jpg led_source_front_mini.jpg I would expect the first one (halogen) to be better, but opposite is true! The image reconstructed with the LED is much sharper - check the ear or the shoulders. halogen_hologram_mi...
by lobaz
Wed Oct 09, 2013 11:54 am
Forum: General Holography
Topic: Looking for a good CGH program
Replies: 4
Views: 2113

Looking for a good CGH program

Hi, thanks for reporting the problem with our toolkit. Until the problem is resolved, I put it temporarily to http://www.kiv.zcu.cz/~lobaz/holography_toolkit/ Enjoy! As for Japanese pages: after a few clicks you can reach the page http://www.laser.ee.kansai-u.ac.jp/WaveFieldTools/download/download.h...
by lobaz
Wed Oct 09, 2013 5:00 am
Forum: General Holography
Topic: Looking for a good CGH program
Replies: 4
Views: 2113

Looking for a good CGH program

Hi, a few years ago my colleagues completed a set of tools "Digital Holography Toolkit". It is available here: http://www.kiv.zcu.cz/en/research/downloads/product-detail-en.html?produkt_id=31 (If the page does not display in English, try to locate "Digital Holography Toolkit" fro...