Kentmere 100

Kyle M. · Jul 27, 2015

Hello after a brief hiatus from 35mm and 120 film I picked up a very nice Canon Ftb and 50mm 1.4. I was also given 5 36 exposure rolls of kentmere 100 film. Does anybody have a time for this film in either HC-110 or Rodinal? I've looked on the massive dev charts and other forms and the times given seem to be all over the place, so I thought I'd ask here for first hand experience. There may be something better for this film but unfortunately HC-110 and Rodinal are all I have on hand. Thanks.

darkosaric · Jul 27, 2015

Hi Kyle,

Best is that you do a test roll. My 8 minutes and agitation every 30s will give different negative than your 8min and agitation every 30s. Recently I developed 2 same films together in tank: one was from nikon, one from Olympus - the were different as well in density and in contrast.

Nodda Duma · Jul 27, 2015

If someone doesn't answer I have some data in my notes at home for Dev in 1:39 HC-110. I'll post this evening.

mnemosyne · Jul 27, 2015

The times listed for HC-110 as well as Rodinal in the >Rollei RPX 100 datasheet< are also applicable for Kentmere 100 and can be used as a starting point.

Ko.Fe. · Jul 27, 2015

You should be fine with HC-110, I used this film in bulks in this developer.
I used it with Rodinal and XTOL as well.
This is the link for this film at my Flickr and most of them will have description for developer.
https://www.flickr.com/photos/kf095/tags/kentmere100/

I used HC110 B, but longer time (7-7.5 min) because I do it in the basement where temperature is 17-19 C.
So, massive chart data seems to be right for 22 C.

mgb74 · Jul 27, 2015

I guess I'd start here: http://filmdev.org/film/show/1086?developer_id=1009

Xmas · Jul 27, 2015

Datasheet?

http://www.kentmere.co.uk/Webfiles/20091291713401332.pdf

pentaxuser · Jul 27, 2015

Xmas said:
Datasheet?

http://www.kentmere.co.uk/Webfiles/20091291713401332.pdf

There's no mention in your link of the developers the OP has which are HC110 and Rodinal. Ilford seems to confine itself to its own developers unfortunately

pentaxuser

Kyle M. · Jul 27, 2015

I think I'm just gonna put together an average time based on times for other 100 ISO films found in the massive dev chart, and adjust from there. Whats the worst that can happen? It was free film after all.

mnemosyne · Jul 27, 2015

Kyle M. said:
I think I'm just gonna put together an average time based on times for other 100 ISO films found in the massive dev chart, and adjust from there. Whats the worst that can happen? It was free film after all.

Really no need to guess around with massive dev chart, just look in the MFG datasheet I linked to above; it is an open secret that Kentmere 100, Rollei RPX100 and Agfaphoto APX100new are 99% identical. Simply compare the times for the Ilford developers in Kentmere 100 datasheet with the times for the Ilford developers in RPX100 datasheet linked above and you will realize the times are all within 30s of each other ... The Rollei datasheet lists all the developers you inquired about.

M Carter · Jul 27, 2015

Best way to go about this is shoot a test still life with constant lighting, and a full range of shades from full black to full white, with shadow detail and highlight detail (I use styrofoam packing block scraps for highlight detail and a dark flannel plaid shirt for shadows as it has full on blacks an a range of low-mids) at several iso's, cut just those frames from the roll and process with your best-guess time shoot another batch of the setup and process those based on what you learned from the first batch. With just one roll you can really learn what works for you.

Everyone's idea of perfect contrast and most people's agitation, temp, handling, etc. differ - this will give you your time and temp for how you process and shoot. And testing makes you feel kinda badass...

Oscar Carlsson · Jul 28, 2015

mnemosyne said:
Really no need to guess around with massive dev chart, just look in the MFG datasheet I linked to above; it is an open secret that Kentmere 100, Rollei RPX100 and Agfaphoto APX100new are 99% identical. Simply compare the times for the Ilford developers in Kentmere 100 datasheet with the times for the Ilford developers in RPX100 datasheet linked above and you will realize the times are all within 30s of each other ... The Rollei datasheet lists all the developers you inquired about.

Has someone ever validated this, that Kentmere 100 == Rollei RPX 100 == Agfaphoto APX100 new?

I've previously believed this as well but I'm not sure anymore.

pdeeh · Jul 28, 2015

Oscar Carlsson said:
Has someone ever validated this, that Kentmere 100 == Rollei RPX 100 == Agfaphoto APX100 new?

I've previously believed this as well but I'm not sure anymore.

How would it be validated?

Harman have always stated unequivocally that their own branded films (whether Ilford or Kentmere) are not remarketed under different names.

People choose to believe or not believe these rumours, though they get stated as "facts", while the basis for these "facts" seems often just to be similar or identical development times.

I develop Acros in D23 for 12 mins, and I develop HP5+ in D23 for 12 mins ... it doesn't make them the same film though, does it?

Oscar Carlsson · Jul 28, 2015

pdeeh said:
How would it be validated?

Harman have always stated unequivocally that their own branded films (whether Ilford or Kentmere) are not remarketed under different names.

People choose to believe or not believe these rumours, though they get stated as "facts", while the basis for these "facts" seems often just to be similar or identical development times.

I develop Acros in D23 for 12 mins, and I develop HP5+ in D23 for 12 mins ... it doesn't make them the same film though, does it?

Good point, which is also what annoys me a bit when people are stating that film X and Y are the same film.

I think I've seen a post in which someone took identical pictures on several different films, like RPX400, HP5+ and Kentmere 400, kept exposure identical and developed each to the manufacturers recommendations. In that case (I'm not thinking about the HP5+ vs Tri-X thread) there was a noticable difference between films (but that could just be different contrast indexes).

Xmas · Jul 28, 2015

pentaxuser said:
There's no mention in your link of the developers the OP has which are HC110 and Rodinal. Ilford seems to confine itself to its own developers unfortunately

pentaxuser

Confirmed but that is the best information we have if you don't trust the massive?

Nodda Duma · Jul 28, 2015

Do this test to get close:

http://m.youtube.com/watch?v=8J7G6ZMb48w

Cut 4-5 strips off the leader, write down the time for each, throw out any obvious outliers, and then average the remaining times together.

I've been doing this for a while -- including for Kentmere 100 -- with good results. Usually when I find my developer getting old The photos I posted recently in the gallery which were taken on Kentmere 100 are examples developed this way. Note I only invert once every minute instead of every 30 seconds.

Kyle M. · Jul 28, 2015

I went ahead and developed a test roll shot around the house in HC-110 dilution H (1+63) for 14 minutes, 10 initial inversions followed by 5 inversions every 30 secs. The negs look pretty darn good to me, won't know for sure until tonight when I get a chance to scan a few.

rjbuzzclick · Jul 28, 2015

In my notes I have a time for Kentmere 100 (shot at EI50) in Rodinal 1+50 for 9:00 @ 68f. I'm not sure where I got this time though.

pentaxuser · Jul 28, 2015

Nodda Duma said:
Do this test to get close:

http://m.youtube.com/watch?v=8J7G6ZMb48w

Cut 4-5 strips off the leader, write down the time for each, throw out any obvious outliers, and then average the remaining times together.

Interesting link but I am glad he gave a demo of how it is done. I was totally confused until that point. Apparently he left the Rodinal in the beaker in the bathroom and his wife thought it was mouthwash :eek:

She had the liquid in her mouth before he could stop her but all was not lost. He told her not to gargle or swallow for an hour and then spit out.

He then took her to a dentist who was a founder member of APUG who examined her teeth. There was bad news and good news. The bad news was that her teeth would remain black forever but the good news was that they had become very sharp and had absolutely no sign of bromide drag

pentaxuser

Xmas · Jul 28, 2015

I should have said I use 1+100 @20C for 60 minutes stand...

flavio81 · Jul 30, 2015

My friends,

There is already an excellent, "scientific" comparison of Kentmere 100 and "new" APX 100, in an excellent french site:

http://www.pirate-photo.fr/pages/viewpage.php?f=51&t=69

Enjoy...

My answer is "not the same film but very close..."
Perhaps made by Harman; and thus they would be correct in that "they do not remarket film under different names", New APX100 being then a different emulsion... but similar. For me, this is just fine. Having Kentmere 100, New APX100, plus the Ilford films means more possibilities of quality film being distributed worldwide.

Also, a comparison with FP4 and Pan 100 ...

http://www.pirate-photo.fr/pages/viewpage.php?f=51&t=68&p=244#p244

Now, i'd not bother too much with such comparisons --- Ilford Delta 100 is the greatest!

Jeff Bradford · Aug 1, 2015

My time for Kentmere 100 shot at 100 in HC-110 (Dilution E, 1+47) is 9 or 10 minutes depending on lighting conditions.

Danlo · Feb 19, 2018

Oscar Carlsson said:
Has someone ever validated this, that Kentmere 100 == Rollei RPX 100 == Agfaphoto APX100 new?

I've previously believed this as well but I'm not sure anymore.

Sorry for late answer, no, APX100 has increased red sensitivity (why anyone would want that is beyond me) thus giving ghostly white unnatural skintones, just like using a dark red filter, it is not made for shooting humans.

Lachlan Young · Feb 19, 2018

Danlo said:
Sorry for late answer, no, APX100 has increased red sensitivity (why anyone would want that is beyond me) thus giving ghostly white unnatural skintones, just like using a dark red filter, it is not made for shooting humans.

I think you mean Retro 80s/ Retro 400s that have extended red sensitivity, APX100 doesn't.

Kentmere 100

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