It seems that these days the cheap drug store 100ISO colour print film had all but disappeared, being replaced by 200ISO and 400ISO.
What is the rational behind that? Is it because the quality difference between ISO100 and 200 film are no longer significant?
The real reason is that drug store 200 is really drug store 400 with a ISO200 DX code on the cannister. You can't pull it two stops and get decent results. Hence, no drug store 400 with an ISO100 DX code on it. Also the reason they sell '800'. It's all ISO 400.
The real reason is that drug store 200 is really drug store 400 with a ISO200 DX code on the cannister. You can't pull it two stops and get decent results. Hence, no drug store 400 with an ISO100 DX code on it. Also the reason they sell '800'. It's all ISO 400.
The real reason is that drug store 200 is really drug store 400 with a ISO200 DX code on the cannister. You can't pull it two stops and get decent results. Hence, no drug store 400 with an ISO100 DX code on it. Also the reason they sell '800'. It's all ISO 400.
HUH???????
I may disagree with this, particularly for Walgreens rebranded Fuji films.
When Walgreens first changed from Agfa to Fuji for their Studio 35 film, I carefully inspected the negatives from the 200 and 400 and found them to be the genuine Fuji 200 and 400 films in the guise of Walgreens brand.
Later I did the same for a roll of their 800. It was, indeed, genuine Fuji 800.
I can also say quite authoritatively that the old Walgreens/Agfa 200, 400, and 800 were all different products.
The real reason is that drug store 200 is really drug store 400 with a ISO200 DX code on the cannister. You can't pull it two stops and get decent results. Hence, no drug store 400 with an ISO100 DX code on it. Also the reason they sell '800'. It's all ISO 400.
Now, in deference to what you say, it is permissable to have a 200 film which is dyed back by a neutral dye to 100 speed to be packed as both a 200 and 100 film and etc.
I do know that, say, Kodak Gold 100 and Gold 200 are the same film, but with a 1-stop ND layer reducing the speed of the lower-rated film.
Thanks, PE.
You'll be able to confirm or refute this assertion from "another network" on the same topic:
Is this true?
TIA, PE.
Just out of interest, I have heard somewhere that there are only 4 manufacturers of Colour Print film left. Kodak, Fuji, Ferrenti? and Lucky. So pretty much whatever we buy today that is not from China are going to be something from a reputable source. Can someone who is more in the know comment on that?
Ferrania of Italy and Lucky of China both use rather old negative film formulas.
PE
At one time, this was totally illegal and unless the law has changed remains illegal.
If a product has a different description on the label it must be distinguishably different as described on the label. Therefore a 200 film is 200, a 400 film is 400 and etc.
I have a friend who is REALLY into car audio. And one of the big problems with SO much car audio equipment is the way that amplifier power is just SO overrated. Amplifiers often claim outrageous numbers such as 500 watts per channel RMS when you KNOW this just can't be true (especially when such an amp bears only a 20 amp fuse, which NEVER blows). In fact, amps like these have been tested to barely produce 30 watts per channel RMS! So it would appear that there is, in general, no law whatsoever that requires a product to live up to the numbers a manufacturer places on it. Of course, there may be specific laws for film ISO that don't exist for, say, power output of amplifiers. But I have never heard of such a thing.
Audio power numbers have always been subject to huge distortions (pun intended).
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