Topic: RA4 paper pinhole negatives

[al]

here's one for the panel of experts.

I want to build a large pinhole camera, and I want to use colour.

Could I use RA4 paper?  When developed I assume I'd get a colour negative of some sort,  which I could then scan and invert (or contact print if I was feeling adventurous)

Would this work?  I've done paper B&W negative pinholes and guessed at about ISO3 or something similarly slow when judging exposures.  Would RA-4 be similar?

I'm tempted to try this for a specific project I have in mind where I need large negatives but before I invest in RA4 chems and paper has anyone got any thoughts ?

[Pete_R]

How about using Cibachrome (Ilfochrome) to get direct positives?

[al]

How about using Cibachrome (Ilfochrome) to get direct positives?

Yes, I did look at that but it's much more expensive both for the paper & chemistry.

[astrobeck]

would the price offset the time and trouble for scanning and then reversing the cheaper stuff to a positive though?
Just wondering.

How about using Cibachrome (Ilfochrome) to get direct positives?

Yes, I did look at that but it's much more expensive both for the paper & chemistry.

[al]

Yes, probably, but I don't get paid enough 

100 sheets 10x8 fuji RA4 - GBP 23
100 sheets Ilfochrome - GBP 136

3l fotospeed RA4 room temp kit GBP 20
3l ilfochrome kit GBP 50

It's going to take a strong business case to get even the RA4 stuff past the family financial controller unfortunately!

would the price offset the time and trouble for scanning and then reversing the cheaper stuff to a positive though?
Just wondering.