I like a challenge...

womble · 05-10-2021, 01:49 PM - **6 Likes**

low par Kris Lockyear, on ipernity

bjolester · 05-10-2021, 01:57 PM

HOW DO I SHOOT iso 0.8?
If you are not using a hand-held light meter, dial iso 25 into your camera's light meter. Once you expose for iso 25, open up your lens 5 f-stops (or lower shutter speed) for iso 0.8.

It seems like an interesting endeavour to shoot this film. I
hope you post some images!

Huss · 05-10-2021, 02:01 PM

I like where this is going.

womble · 05-10-2021, 02:03 PM

I have a handheld meter so I can use that, or my LX goes down to ISO 6 so I can use that and open up by three stops... Luckily I'm a habitual tripod user so that is not a problem!

Huss · 05-10-2021, 02:08 PM

Who needs a tripod? 0.8ISO = 1/60 @f2 in bright sunlight!

photoptimist · 05-10-2021, 02:09 PM

LOL!

Of course, with the long shutter times required for ISO 0.8, the reciprocity effects demand an exposure equivalent to ISO 0.4. But then the even longer exposure of ISO 0.4 requires a further reciprocity adjustment to ISO 0.2. But then ....... ISO 0.1, But then............

It's Zeno's paradoxical exposure -- it's never done no matter how long you expose it!

(In fact, the film is really just a strip of perforated clear plastic!

)

womble · 05-10-2021, 02:15 PM - **1 Like**

Originally posted by Huss

Who needs a tripod? 0.8ISO = 1/60 @f2 in bright sunlight!

I live in England. Bright sunlight isn't really an option unless I want to shoot the whole roll in one afternoon on some random day in August...

My plan is to find flowing water and make use of the possibilities of long exposures. It apparently doesn't have a great DR. It was originally made for photographing fingerprints.

Should be fun!

**EssJayEff** · 05-10-2021, 02:23 PM

Originally posted by photoptimist

reciprocity adjustment

You are an optimist . . . I learned it as "reciprocity failure."

Also, as I recall, you have to alter chemical development, too . . . right?

aaacb · 05-10-2021, 04:35 PM

Similar sensitivity as wet plate collodion, I think?

**DWS1** · 05-10-2021, 05:26 PM

Not really sure what to make of this.

**UncleVanya** · 05-10-2021, 05:57 PM - **1 Like**

Originally posted by photoptimist

LOL!

Of course, with the long shutter times required for ISO 0.8, the reciprocity effects demand an exposure equivalent to ISO 0.4. But then the even longer exposure of ISO 0.4 requires a further reciprocity adjustment to ISO 0.2. But then ....... ISO 0.1, But then............

It's Zeno's paradoxical exposure -- it's never done no matter how long you expose it!

(In fact, the film is really just a strip of perforated clear plastic!

)

Reciprocity failures can vary by film. The 0.8 rating may already take this into account. How to Expose Film Correctly at Night

**AggieDad** · 05-10-2021, 06:35 PM

Kris - I know nothing about film and cannot respond to the what you fellows are discussing.

However, I m thrilled to know there is another Pentaxian who relishes taking pictures of old gravestones and cemeteries. Being in England, you have some considerably older stones to photograph than I get to see. But I still get to see some interesting stones and some great inscriptions.

I will take the time to look through your work on ipernity more thoroughly.

Huss · 05-10-2021, 07:12 PM - **1 Like**

Originally posted by womble

I live in England. Bright sunlight isn't really an option unless I want to shoot the whole roll in one afternoon on some random day in August...

My plan is to find flowing water and make use of the possibilities of long exposures. It apparently doesn't have a great DR. It was originally made for photographing fingerprints.

Should be fun!

I used to live in England.

I remember that one sunny day. It was breathtaking.

**K-Three** · 05-10-2021, 07:41 PM

I played with Kodalith many years ago, ASA 6, I'm imagining this will be similar,
Will be interesting to see what you get,

**mattt** · 05-10-2021, 08:27 PM

Iso 0.8!!

Is that for capturing sunspots?!? :P

I cant imaging how one would photograph finger prints with it. Cant wait to see what you get from your plan to shoot moving water.

05-10-2021, 01:49 PM - 6 Likes	#1
womble Pentaxian Join Date: Apr 2010 Location: Hertfordshire Photos: Gallery Posts: 4,324	I like a challenge... low par Kris Lockyear, on ipernity

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05-10-2021, 01:57 PM	#2
bjolester Senior Member Join Date: Jun 2010 Photos: Gallery Posts: 211	HOW DO I SHOOT iso 0.8? If you are not using a hand-held light meter, dial iso 25 into your camera's light meter. Once you expose for iso 25, open up your lens 5 f-stops (or lower shutter speed) for iso 0.8. It seems like an interesting endeavour to shoot this film. I hope you post some images!

05-10-2021, 02:01 PM	#3
Huss Veteran Member Join Date: Apr 2020 Posts: 629	I like where this is going.

05-10-2021, 02:03 PM	#4
womble Pentaxian Join Date: Apr 2010 Location: Hertfordshire Photos: Gallery Posts: 4,324 Original Poster	I have a handheld meter so I can use that, or my LX goes down to ISO 6 so I can use that and open up by three stops... Luckily I'm a habitual tripod user so that is not a problem!

05-10-2021, 02:08 PM	#5
Huss Veteran Member Join Date: Apr 2020 Posts: 629	Who needs a tripod? 0.8ISO = 1/60 @f2 in bright sunlight!

05-10-2021, 02:09 PM	#6
photoptimist Pentaxian Join Date: Jul 2016 Photos: Albums Posts: 5,121	LOL! Of course, with the long shutter times required for ISO 0.8, the reciprocity effects demand an exposure equivalent to ISO 0.4. But then the even longer exposure of ISO 0.4 requires a further reciprocity adjustment to ISO 0.2. But then ....... ISO 0.1, But then............ It's Zeno's paradoxical exposure -- it's never done no matter how long you expose it! (In fact, the film is really just a strip of perforated clear plastic! )

05-10-2021, 02:15 PM - 1 Like	#7
womble Pentaxian Join Date: Apr 2010 Location: Hertfordshire Photos: Gallery Posts: 4,324 Original Poster	Originally posted by Huss Who needs a tripod? 0.8ISO = 1/60 @f2 in bright sunlight! I live in England. Bright sunlight isn't really an option unless I want to shoot the whole roll in one afternoon on some random day in August... My plan is to find flowing water and make use of the possibilities of long exposures. It apparently doesn't have a great DR. It was originally made for photographing fingerprints. Should be fun!

05-10-2021, 02:23 PM	#8
EssJayEff Site Supporter Join Date: Jul 2011 Location: near Saxapahaw, NC Photos: Gallery \| Albums Posts: 966	Originally posted by photoptimist reciprocity adjustment You are an optimist . . . I learned it as "reciprocity failure." Also, as I recall, you have to alter chemical development, too . . . right?

05-10-2021, 04:35 PM	#9
aaacb Pentaxian Join Date: May 2016 Photos: Gallery Posts: 3,723	Similar sensitivity as wet plate collodion, I think?

05-10-2021, 05:26 PM	#10
DWS1 Site Supporter Join Date: Aug 2018 Location: Arkansas, USA Posts: 1,169	Not really sure what to make of this.

05-10-2021, 05:57 PM - 1 Like	#11
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,381	Originally posted by photoptimist LOL! Of course, with the long shutter times required for ISO 0.8, the reciprocity effects demand an exposure equivalent to ISO 0.4. But then the even longer exposure of ISO 0.4 requires a further reciprocity adjustment to ISO 0.2. But then ....... ISO 0.1, But then............ It's Zeno's paradoxical exposure -- it's never done no matter how long you expose it! (In fact, the film is really just a strip of perforated clear plastic! ) Reciprocity failures can vary by film. The 0.8 rating may already take this into account. How to Expose Film Correctly at Night

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05-10-2021, 06:35 PM	#12
AggieDad Site Supporter Join Date: Jan 2015 Location: Houston, TX Photos: Gallery \| Albums Posts: 1,452	Kris - I know nothing about film and cannot respond to the what you fellows are discussing. However, I m thrilled to know there is another Pentaxian who relishes taking pictures of old gravestones and cemeteries. Being in England, you have some considerably older stones to photograph than I get to see. But I still get to see some interesting stones and some great inscriptions. I will take the time to look through your work on ipernity more thoroughly.

05-10-2021, 07:12 PM - 1 Like	#13
Huss Veteran Member Join Date: Apr 2020 Posts: 629	Originally posted by womble I live in England. Bright sunlight isn't really an option unless I want to shoot the whole roll in one afternoon on some random day in August... My plan is to find flowing water and make use of the possibilities of long exposures. It apparently doesn't have a great DR. It was originally made for photographing fingerprints. Should be fun! I used to live in England. I remember that one sunny day. It was breathtaking.

05-10-2021, 07:41 PM	#14
K-Three Loyal Site Supporter Join Date: May 2014 Location: Pugetopolis, WA Photos: Gallery Posts: 937	I played with Kodalith many years ago, ASA 6, I'm imagining this will be similar, Will be interesting to see what you get,

05-10-2021, 08:27 PM	#15
mattt Site Supporter Join Date: Feb 2011 Location: Niagara Photos: Gallery \| Albums Posts: 3,907	Iso 0.8!! Is that for capturing sunspots?!? :P I cant imaging how one would photograph finger prints with it. Cant wait to see what you get from your plan to shoot moving water.