Fuji compared to PFG-01, 8E75, and BB-640

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Tony

Fuji compared to PFG-01, 8E75, and BB-640

Post by Tony »

Here are four H2 copies on four different emulsions:



Image



All were made in an identical setup, a reflection H2 copy from a transmission H1 master. 35 mW HeNe laser. Processing was ascorbate (JD-4) developer and Fe EDTA bleach. The master was on BB-640. Details on each:



Upper left: Agfa 8E75 film(obviously out of date)

18 second exposure





Upper right: Fuji film

18 second exposure



Lower left: BB-640 plate

2 minute 3% TEA presoak

33 second exposure



Lower right: PFG-01 film

23 second exposure





Comments:



I photographed all four at the same time and post them here with no 'tweaking' on the photo other than cropping. The photo does a fair job of expressing the differences I see when viewing the holograms directly. The Fuji film compares very well to the Agfa, having very similar brightness and slightly lower noise. BB-640 is the hands down winner for brightness and noise. PFG-01 is definitely behind in noise, with brightness similar to the Fuji and Agfa.



Caveats:



Purists may complain that this isn't fair to PFG-01 as I didn't process it with the recommended JD-2 (pyrogallol) process. This accounts for its red color - it would undoubtedly be more yellow-green if processed with a solvent bleach. However, as far as noise is concerned, I do think this example of PFG-01 is representative of my general experience with PFG-01, even when processed with JD-2.
Ron Michael

Fuji compared to PFG-01, 8E75, and BB-640

Post by Ron Michael »

Cool, I'm glad to see the Fuji looks that good. Appreciate the side by side comparsion! :D
MichaelH

Fuji compared to PFG-01, 8E75, and BB-640

Post by MichaelH »

That's cool Tony. What were the processing times on each?



I wouldn't consider the comparison unfair to the PFG but the BB640 comparison might be unfair to the others since they weren't treated with TEA. In any case I think it's a minor detail since you've disclosed the info and supplied pictures. It's all there for people to judge.
Ed Wesly

Fuji compared to PFG-01, 8E75, and BB-640

Post by Ed Wesly »

Congratulations! It shows what was more or less expected; similar enough to Agfa to be a drop-in replacement but nothing substantially better.
Tony

Fuji compared to PFG-01, 8E75, and BB-640

Post by Tony »

Processing times were not recorded but were similar and very short. The JD-4 developer seems to act very quickly, reaching close to desired density (~2) in 10-20 seconds. Also, I didn't use a stop bath, rather a very short (10 second) rinse between develop and bleach. This is because Jeff B pointed out that without a pH change, development continues in the rinse.
dave battin

Fuji compared to PFG-01, 8E75, and BB-640

Post by dave battin »

Tony excellent comparison! The thing with this film, is its all you need! i doesn’t matter what laser you have as long as you have the Fuji film chances are you can shoot one.............
Ed Wesly

Fuji compared to PFG-01, 8E75, and BB-640

Post by Ed Wesly »

The next step is for someone to do something similar in the green and then in the blue, and then start combining them...
dave battin

Fuji compared to PFG-01, 8E75, and BB-640

Post by dave battin »

Ed Wesly wrote:The next step is for someone to do something similar in the green and then in the blue, and then start combining them...


IM WAITING FOR A DELIVERY...................................AND WAITING AND WAITNG....
LarryD

Fuji compared to PFG-01, 8E75, and BB-640

Post by LarryD »

Tony wrote:Upper left: Agfa 8E75 film(obviously out of date)
18 second exposure


Upper right: Fuji film
18 second exposure
RonMichael wrote:page 114. H.I. Bjelkhagen. Silver-Halide Recording Materials. Springer. Vol 66 1995.
Agfa Gevaert holotest:

8e75hd 7um thick <5000 lp/mm gn size 35/44 nm 633nm 10uj/cm2, 694nm 20uj/cm2




Whats the deal with such a difference in energy? Agfa 10-20uJ/cm2 and Fuji's paper says 100-200uJ/cm2?



Tony- what lead you to shoot both for the same time (18 secs) when the Fuji film spec appears to be 10 times less sensitive? I see the hologram came out nice. Is their data sheet incorrect?
Tony

Fuji compared to PFG-01, 8E75, and BB-640

Post by Tony »

Tony- what lead you to shoot both for the same time (18 secs) when the Fuji film spec appears to be 10 times less sensitive?




...nothing but a WAG (wild ***** guess)...



I have no real calibration to the outside world. All my exposure calculations are based on an empirically derived system using a Radio Shack solar cell as my light meter. Not having paid any attention to the data sheet, I just started at the same exposure.



Please don't read anything relevant into this - I'm not making any statement about the relative sensitivity.
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