HHPhoto
Well-known
Dear Roger,
with all respect, but I have to completely disagree:
No.
1. Kodak started this campaign against slide film already at 2008 (at the Photokina fair), at a time when they had a full line of (really excellent) slide films.
2. If they had started marketing for slide films (instead of working against it), probably best before 2008, they could have stabilised this market.
Look at instant film: In 2008 all have said it will be dead, Polaroid stopped production.
But then IP and Fuji started marketing again for this film type, and saved it.
Now we have even increasing sales of instant film.
Oh please, not again this Kodak marketing nonsense that Ektar could be a replacement for reversal film.
It cannot! Not at all.
Negative film cannot replace reversal film. Both are two different photographic mediums with different characteristics and different strenghts.
Apples cannot replace oranges and vice versa.
1. With slide film I have a finished positive, a finished picture.
I just hold it up to the light and can enjoy it in brillant colours.
I cannot do that with negative film.
2. I can put a slide on a light table, looking through an excellent slide loupe and have an enlarged, finished picture with excellent quality.
Not possible (useful) with colour negative film.
3. I can project the slide and have the best picture quality at lowest costs with big enlargements.
Not possible with negative film.
4. If i want prints from slides I can scan it and make prints (on RA-4 or other media), can use Kodak and Fuji Display films for big format slides, I can (still) use Ilfochrome for optical enlargements (currently there are still some labs who are doing it), or I can use Harman Direct Positive paper for optical direct BW prints.
So even for prints we have a little more creative options with reversal film than with negative film.
With negative films we have direct optical enlargement on RA-4, and the scanning option with output as above.
No other film type has such a versatility like reversal film. One of the reasons why reversal film have been the dominant film type for decades in professional photography.
5. Ektar cannot compete with the current slide films like Provia 100F, Velvia, E100G etc. in terms of fineness of grain, edge sharpness and resolution.
There have been lots of different scientific film tests during the last years which have proved that:
- the tests of Zeiss by Müller / Fleischer and additional tests by Nasse
- the extremely detailed tests of Seeman / Serger / Ventzke
- the test runs of Antora / Mayer
- the tests of Heuer / Müller (well Heuer, that is me).
The modern ISO 100/21° slide films have a bit finer grain than Ektar, significant better edge sharpness and about 35% higher resolution.
By the way, even Pro 160 NS, Superia 200, Gold 200 and Portra 160 have higher resolution than Ektar 100 (the above mentioned tests all proved that).
Concerning resolution Ektar is indeed one of the weakest films on the market.
Kodak know that.
Therefore they only say it is the finest grain colour negative film (they don't say it is generally the finest grained colour film, because they know that that is not true).
Why has Ektar this weakness in resolution?
Because its genes are from movie film.
Movie film stock is not optimised for resolution, because that is not needed in a movie film.
Because of the high picture frequency the human eye cannot resolve fine detail in fast moving pictures.
But in still photography the eye has time to "look into the picture", has time to resolve fine detail. That is not possible in a movie.
Therefore movie films have lower resolution than still photography films.
Ektar and Portra 400 are derived from movie film stock, both have this weakness in resolution (Portra 400 has 20% less resolution than Portra 400 NC-2; result of the Seeman / Serger / Ventzke and Antora / Mayer tests).
Why lots of Photographers don't see this using Ektar?
Because they use the workflow for film with the lowest quality:
scanning, mostly with scanners with only max 4000ppi.
With this low quality workflow they loose up to 50% of the resolution of film (drum scanners are much better, but not as good as classic optical enlargement).
You don't have this problem with optical enlargements with APO enlarging lenses, and you don't have it with slide projection with very good projection lenses. With this optical imaging chain you can get about 95% of the detail, which is on the film.
Cheers, Jan
with all respect, but I have to completely disagree:
Dear Jan,
Er... Sort of.
No-one denies the advantages of slide film. BUT, I'd suggest that Kodak were merely preparing people for the inevitable. Even if slide film sales doubled tomorrow -- and I don't think any advertising campaign or anything else is going to make that happen -- it would still be a tiny, tiny market: Kodak decided to stop making the stuff a year ago. I'd say that the argument is, "Quit while you have the illusion of choice." And (understandably) because they're Kodak they're trying to flog the films they make, which is hardly idiotic.
No.
1. Kodak started this campaign against slide film already at 2008 (at the Photokina fair), at a time when they had a full line of (really excellent) slide films.
2. If they had started marketing for slide films (instead of working against it), probably best before 2008, they could have stabilised this market.
Look at instant film: In 2008 all have said it will be dead, Polaroid stopped production.
But then IP and Fuji started marketing again for this film type, and saved it.
Now we have even increasing sales of instant film.
It's also true that Ektar 100 is an extraordinarily fine film that can be used in surprisingly many situations as a replacement for slide -- see http://www.shutterbug.com/content/kodak’s-ektar-100-35mm-roll-film-new-color-negative-film-kodak
Oh please, not again this Kodak marketing nonsense that Ektar could be a replacement for reversal film.
It cannot! Not at all.
Negative film cannot replace reversal film. Both are two different photographic mediums with different characteristics and different strenghts.
Apples cannot replace oranges and vice versa.
1. With slide film I have a finished positive, a finished picture.
I just hold it up to the light and can enjoy it in brillant colours.
I cannot do that with negative film.
2. I can put a slide on a light table, looking through an excellent slide loupe and have an enlarged, finished picture with excellent quality.
Not possible (useful) with colour negative film.
3. I can project the slide and have the best picture quality at lowest costs with big enlargements.
Not possible with negative film.
4. If i want prints from slides I can scan it and make prints (on RA-4 or other media), can use Kodak and Fuji Display films for big format slides, I can (still) use Ilfochrome for optical enlargements (currently there are still some labs who are doing it), or I can use Harman Direct Positive paper for optical direct BW prints.
So even for prints we have a little more creative options with reversal film than with negative film.
With negative films we have direct optical enlargement on RA-4, and the scanning option with output as above.
No other film type has such a versatility like reversal film. One of the reasons why reversal film have been the dominant film type for decades in professional photography.
5. Ektar cannot compete with the current slide films like Provia 100F, Velvia, E100G etc. in terms of fineness of grain, edge sharpness and resolution.
There have been lots of different scientific film tests during the last years which have proved that:
- the tests of Zeiss by Müller / Fleischer and additional tests by Nasse
- the extremely detailed tests of Seeman / Serger / Ventzke
- the test runs of Antora / Mayer
- the tests of Heuer / Müller (well Heuer, that is me).
The modern ISO 100/21° slide films have a bit finer grain than Ektar, significant better edge sharpness and about 35% higher resolution.
By the way, even Pro 160 NS, Superia 200, Gold 200 and Portra 160 have higher resolution than Ektar 100 (the above mentioned tests all proved that).
Concerning resolution Ektar is indeed one of the weakest films on the market.
Kodak know that.
Therefore they only say it is the finest grain colour negative film (they don't say it is generally the finest grained colour film, because they know that that is not true).
Why has Ektar this weakness in resolution?
Because its genes are from movie film.
Movie film stock is not optimised for resolution, because that is not needed in a movie film.
Because of the high picture frequency the human eye cannot resolve fine detail in fast moving pictures.
But in still photography the eye has time to "look into the picture", has time to resolve fine detail. That is not possible in a movie.
Therefore movie films have lower resolution than still photography films.
Ektar and Portra 400 are derived from movie film stock, both have this weakness in resolution (Portra 400 has 20% less resolution than Portra 400 NC-2; result of the Seeman / Serger / Ventzke and Antora / Mayer tests).
Why lots of Photographers don't see this using Ektar?
Because they use the workflow for film with the lowest quality:
scanning, mostly with scanners with only max 4000ppi.
With this low quality workflow they loose up to 50% of the resolution of film (drum scanners are much better, but not as good as classic optical enlargement).
You don't have this problem with optical enlargements with APO enlarging lenses, and you don't have it with slide projection with very good projection lenses. With this optical imaging chain you can get about 95% of the detail, which is on the film.
Cheers, Jan
