Slightly confused - did I mess up?

[Ivo Stunga]

I'd buy that film

I have no clue who invented the terminology.

Looking at EM spectrum an idea comes to mind: lack of definition of the immediate IR part of it. Because in the space of 300nm we have all the colors that we can experience - a mere 300nm wide space where we know that each color/wavelength has its own properties that we can and do exploit.
Visual (red) ends at 700nm where Infrared begins and in the space of 700nm to 1mm we just tend to bluntly call it "IR", although EM radiation is a continuum and we are just examining a part of it. There are more subtle EM spectrum divisions, like DIN "IR-A" of 0.75 to 1.4μm.... Other standards give slightly different values - Wiki says that Astronomers use "0.7 to 2.5μm" as NIR...

Today we have "NIR" available to us, and if "700nm to 2.5μm" is good for Astronomers, it's good enough for me.
"Superpanchromatic" is great and self-explanatory too and could be used to differentiate between thinnest slice of the "green" (Aviphot) Vs fatter, more proper NIR slice (HIE) - if it existed.

 

[ADOX Fotoimpex]

True, and Adox call the effect "pseudo IR". Simply Red is also a pop band that was popular in the 1980s, and they weren't infrared either. Maybe there is a connection.

JPD, I cannot find the terminology "pseudo infrared" anywhere on our website or in the shop. Where did you still see this? Or is this from memory?

 

[JPD]

JPD, I cannot find the terminology "pseudo infrared" anywhere on our website or in the shop. Where did you still see this? Or is this from memory?

It's on the page for the snap on filters that was linked to in this thread:
"IR RED allows to play with light pseudo-infrared effects on extended red sensitivity films like ADOX HR-50."

 

[MattKing]

Matt,

I think this has been historically developed. I did not come up with this nomenclatura and just started using it in product descriptions like everyone else did. HIE and efke IR were called "infrared", SFX and Aviphot 400 and his twins were called "pseudo infrared". I have no clue who invented the terminology. Now fastforewarded 20 years there is not much else and since also most people have left in the trade sector as well, things are up for a re-definition and I am happy to implement changes. My main point was that this was not intended to give the product something via marketing, that it actually does not have
So shall it be "near infrared" now.
We actually use the term "superpanchromatic" for this film in the general description. The "pseudo" is, if at all, used only with reference to IR photography.

Mirko

FWIW, that nomenclature might vary with market - over here, I have never encountered it until this discussion.

 

[MattKing]

It's on the page for the snap on filters that was linked to in this thread:
"IR RED allows to play with light pseudo-infrared effects on extended red sensitivity films like ADOX HR-50."

That would read much better if "pseudo" was replaced with "near".

 

[JPD]

That would read much better if "pseudo" was replaced with "near".

I agree. There is some visible light plus some infrared. "Pseudo" sounds like it's an effect that reminds you of IR but isn't.

 

[MattKing]

This reminds me a bit of some of the confusion that arises when us North American English speakers read something written in England

 

[pentaxuser]

This reminds me a bit of some of the confusion that arises when us North American English speakers read something written in England

You mean in this case a reply such as mine to your statement. My reply might state: "That's like throwing an inflammable liquid, such as petrol, over the fire, Matt"

pentaxuser

PS I cook with and heat the house with gas which is perfectly safe

 

[Donald Qualls]

gas which is perfectly safe

Except when used for suicide or when a leak blows up the house...

 

[Ernst-Jan]

Yes, I fucked up, but second roll came out great. Just ordered a bulk roll of this film so I can shoot more often!