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Illford SFX 200

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#1 TxStars

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Posted 11 June 2019 - 12:20 AM

So anyone tried it yet?

https://www.freestyl...ed-Sensitivity)



#2 nof

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Posted 11 June 2019 - 01:54 AM

Hello, I used to use it years ago for landscape work, where it had an almost infrared look to it, darkening blue skies and lightening foliage. But I preferred other films for wide field astro photographs with long exposures.



#3 Todd N

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Posted 11 June 2019 - 05:07 AM

Yes, in the past and even recently I bought a roll to test and it has extreme reciprocity, so bad I didn't care to scan the results. It also doesn't respond to hypering.



#4 TxStars

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Posted 11 June 2019 - 11:24 PM

Guess I'll have to keep looking for a B&W with smallish grain that can get into or past 650 nm  ...

Perhaps I get a roll of Rollei RPX 100 and see if it can live up to it's speck sheet..


Edited by TxStars, 11 June 2019 - 11:26 PM.


#5 Giorgos

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Posted 12 June 2019 - 06:21 AM

It has been tried on astrophotography with disappointing results (too much reciprocity failure). Look here.



#6 Todd N

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Posted 12 June 2019 - 06:21 AM

Guess I'll have to keep looking for a B&W with smallish grain that can get into or past 650 nm  ...

Perhaps I get a roll of Rollei RPX 100 and see if it can live up to it's speck sheet..

 

I've already tested(hypered) Rollei RPX 100  to no benefit and extreme reciprocity. The last couple of years I have pretty much surveyed and tested most films with extended red sensitivity and the only ones that significantly respond to H2 are Fomapan 400 and Bergger Panchro 400 which I haven't fully tested since it isn't available in 35mm anymore. Below is a list of red sensitive films I have tested. Otherwise noted they either didn't respond to H2 or the benefit was insignificant:

 

Ilford SFX 200, 

Berger Panchro 400

Fomapan 200

Fomapan 400(Very positive to H2)

JCH Streetpan 400

Rollei Retro 80

Rollei Retro 400s

Rollei RPX 100

Rollei RPX 400

Ars-Imago 320

 

Extended red films I haven't tried and are unlikely to since they are suspect rebranded films or from a line of films, namely Rollei/Agfa Aphiphot that have poor performance in general:

 

Foma Retropan 320(Ars-Imago 320?)

Adox HR-50 Speedbosst(Agfa Aviphot)

Most of Film Washi line

CatLab films IS0 80 & 320

 

Todd


Edited by Todd N, 12 June 2019 - 10:26 AM.

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#7 Giorgos

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Posted 12 June 2019 - 02:11 PM

Another technique worth trying would be chilling film in a cold camera... I suspect more films will respond to chilling than to H2 hypering.



#8 Todd N

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Posted 12 June 2019 - 05:32 PM

Guess I'll have to keep looking for a B&W with smallish grain that can get into or past 650 nm  ...

Perhaps I get a roll of Rollei RPX 100 and see if it can live up to it's speck sheet..

 

One technique is to use color film with a red filter and then convert it to B&W after being scanned. My recollection is there are some color films(namely Kodak) that are H-alpha sensitive and even higher ISO color films are less grainy to their B&W counterparts. I believe Kodak Ektar 100 has already been tried and not performed well.

 

Todd


Edited by Todd N, 12 June 2019 - 05:34 PM.


#9 Nightfly

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Posted 12 June 2019 - 07:48 PM

For color work I suggest Fujifilm Superia 100, also called CN 100.  Not to be confused with the discontinued Reala 100.  Best color negative film ever made.  And it's still available.   Thought I would mention it since it escapes most conversations.  Only available in 135 unfortunately.  

 

It is now called Fujicolor 100 Industrial. 

 

https://www.casualph...ial-100-review/




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