Fotohuis RoVo

<p>Adotech II (made by SPUR) is optimized for this micro film. However you can use also other low contrast type developers for it.</p>

<p>http://www.photosensitive.ca/wp/easy-film-developers</p> <p> </p>

Send me an e-mail: fotohuisrovo@hotmail.com The internal Photonet mail doesn't want to cooperate.

I have a Heiland TRDZ densitometer for making film logD curve fitting. No problem for measuring for you. I am located in the Netherlands.

The problem with Fotokemika was that during their downtime in Summer (August 2012) they decided to stop all production. So at that time there were not so many films in the pipeline. Which means the existing stock was away in a few weeks. I think there are about 30 Efke 25 / Pan 25 films are left in my freezer. With Agfa Photo there as a bit more time and a large stock of APX-100 was still available. But 2005/2006 is 10 years ago now and I am running out of my last APX-100 films (original Leverkusen, Germany) now. Nothing is for ethernity so for my iso 100 films I will continue with Fomapan 100 and Acros 100.

Apart from all Efke films from Fotokemika the Adox CHS 25-50-100 were coming from Efke. The specials from Rollei- Maco too: ATO2,1 ; Rollei Retro 100 TONAL ; Ortho 25 ; Rollei PAN 25 and a few others in the past. For Rollei Ortho 25 they could switch to OrWo Filmotec but the Orthopan films, Lith and slow speed films were lost. Adox has some connections to Ilford/Harman (I think for their papers) and uses the coating facility of Innoviscoat in Germany. CMS 20 is an Agfa Gevaert ortho micro film so you can not compare it with the Efke 25 at all. Looking at the characteristics of RPX-25 (Rollei) it seems to be Aviphot 40 from Agfa Gevaert. At least the Retro 80(S) is Aviphot 80 E1 and Superpan 200 = Retro 400(S) is Aviphot 200 E1. Because the market in iso 25 films is very small I won't expect any new iso 25 film for the future. In micro films, aviation type films and the PAN F+ from ilford this market is already full. For RPX-100/400 (Rollei) were already especially made for Rollei by Harman/Ilford. Fortunately for you, (and me) we can still enjoy our Efke 25 / Rollei PAN 25 films.

<p><img src="https://farm9.staticflickr.com/8174/7886004536_149153d3b7_z.jpg" alt="" width="640" height="531" /> </p> <p>Efke 25 / Rollei PAN 25: R09/Rodinal 1+50 but also FX-1/Beutler 1+1+10 is an excellent developer for it! For APX-25 examples I have to re-scan in my computer or look on my old computer system before 2004. This Agfa film was discontinued around 2002.</p> <p> </p>

<p><img src="https://farm3.staticflickr.com/2136/13042682963_0616b31446_z.jpg" alt="" width="640" height="516" /> </p> <p>Different film because RPX 25 is aviation type film (Aviphot 40 E1). It is also a bit more sensitive in Red and the iso rate can be 25-40 depending of the type developer.<br> All aviation type films are tending to a higher contrast. Comparing to Aviphot 200 E1 (Superpan 200/Retro 400(S) ) or Aviphot 80 E1 (Retro 80(S)) the best type developers for it: A-49 1+1, Supergrain 1+15, AM74 1+15, Film Low Gamma/Rollei Low Contrast 1+4, TDLC-103 1+0, Diafine 2 - bath. All semi-compensating or lower contrast type developers. If you do not care about an S shape developing curve: R09/Rodinal 1+50 ; 1+100.</p> <p>Here an example of RPX-25 in R09/Rodinal 1+50. Due to even a high contrast at 1+50 , 1+100 would be even better.<br> Alternative iso 25 films: Efke 25 / Rollei PAN 25 if you can still get it because Fotokemika stopped all production in August 2012. This film was Orthopan, easy to get a large Grey scale and compatible with a lot of regular developers. In slower speed: Only micro films (Adox CMS20, in fact iso 6) which can not be used in high contrast light situations.<br> Another Orthopan film is Fuji Acros 100, Sigma modern type emulsion technique. Also a high resolution for an iso 100 film and in grain just a really little bit more then the Efke 25 or RPX-25 film.</p> <p> </p>

<p>Standard Jobo 1520 tanks have an internal minimum volume of 485ml and it can be loaded with 2x 120 roll films seperated by the <em>Red clip</em> which should be on the 1501 reel. You only have to take care of the minimum available concentrate of the developer for each film surface. 135-36 and 120 roll films have approx. the same surface area. For e.g. R09/Rodinal the real minimum amount of concentrate is 5ml-5,5ml for each film. So if you're filling the 1520 tank to 550ml (about 600ml is the maximum filling volume) with one film you can do a 1+100 dilution. For two films the maximum will be a 1+50 dilution.</p>

<p>CMS20, ATP1,1 and Copex are micro films. Ortho 25 is ortho film.<br> Regular slow speed film is PAN F+ (panchromatic). Alternative the superpanchromatic Rollei/Agfa Gevaert films: Aviphot 80 (Retro 80(S) ) or Aviphot 40 (RPX-25). When using these films with a semi-compensating or lower contrast type developer the results can be magnificent. A-49 1+1 or TDLC-103 1+0, Film Low Gamma / Rollei Low Speed 1+4, Supergrain 1+15 / AM74 1+15 just to mention some possibilities.<br> For regular iso 100 modern technology films I can recommend the <em>Fuji Acros</em>, Orthopan so also a high resolution. There are many good combinations for this film in developers.</p>

<p><img src="https://farm9.staticflickr.com/8085/8591668781_953f155382_z.jpg" alt="" width="640" height="446" /></p> <p>FP200 E.I. 160 in Xtol 1+1. Zorki-4K with J-8 F/2,0-50mm.</p> <p> </p>

<p>I agree with this advice.</p>

My favorite FP200 developer is Fomadon Excel W27/Xtol in 1+1 or PC-TEA (Pat Gainer) in 1+50 working as Xtol 1+2 developing times. According my TRD-Z densitometer values I got almost iso 160 with it. I can do the test with 3 pcs. cutting FP200 135-36 film.

<blockquote> <p> BTW, the Shutterbug article I mentioned earlier was written by Roger Hicks.</p> </blockquote> <p>I know the article. Fomapan 200 was at that time sold (T200) under Paterson 200 film. In that era they had also a T800 film (before 2001), it was also sold under Paterson 800 film.</p>

<p>Then it is as you measured out with Lmax: iso 64. The question is how compatible the Lmax is with original Tmax developer from Kodak which is a TM and not a completely published formulae.</p>

<p><img src="https://farm1.staticflickr.com/57/190902189_6ae2a9a45a_z.jpg" alt="" width="640" height="424" /><img src="https://farm1.staticflickr.com/63/190902192_030e349c4c_z.jpg" alt="" width="640" height="424" /></p> <p>In 2005, Prague and Fomapan 200 in R09/Rodinal. Old emulsion E.I. 125; N+1 E.I. 160.<br> M7+ Elmarit F/2,8-28mm with Y-filter (Heliopan).</p> <p> </p>

<p>Well I hope you have a <em>calibrated</em> densitometer. If you get iso 64, it is how it is. I have never done the test with <em>Lmax</em> (or <em>Tmax</em> developer) and FP200. However I did with <em>Xtol/Fomadon Excel W27</em> and <em>Diafine</em>. However Diafine was somewhere in 2009 with the old FP200 emulsion.</p>

<p>You can reach box speed with Diafine (2-bath). Even in Microphen you're close but just not iso 200. A good alternative Xtol/Fomadon Exel W27 1+1 of PC-TEA 1+50 on E.I. 160.<br> http://foma-cz.cs4.cstech.cz/en/fomapan-200<br> Y=0,6-0,65: iso in between 160-200 with Microphen, see above FP200 data sheet.</p>

<p>Please note that since they changed the FP200 emulsion in 2012 the real speed has gone down 1/3F stop to the original emulsion. In R09/Rodinal the film has hardly iso 100 now. (Was iso 125).<br />The problem is a special ingredient for the production of this film which was not available anymore from one of the Foma suppliers so they had to modify it in the film production process.</p>

Jobo rotary processors can be used for B&W film development in a higher dilution or for developers designed for 24C temperature development, like CG-512/RLS 1+4 or Microdol-X 1+2. High acutance developers are less suitable for this type of agitation.

<p>I have a Jobo CPA-2 with elevator too but this is mostly used for the C-41 color development and development on 24C like CG-512/R.L.S.<br> Further the device is very handy for paper drum development in larger formats (40x50cm and up) if you do not have a large dark room place.</p> <p>I can only agree with you that R09/Rodinal is not very suitable for rotary development but that is with all high acutance type developers the case.</p>

<blockquote> <p>The best stand developer I use is Billy Thornton's 2 bath. I stand develop both baths.</p> </blockquote> <p>You are fully correct about this "Leica" type developer from B. Thornton. Most suitable for "stand" development maybe then R09/Rodinal (because it is more known and populair and the price is worldwide low).<br> I am not a fan of "stand" development at all. I can control via my <em>Heiland TAS</em> inverse processing robot all times, speed, inversions how I want it so 1+100 and a slow inverse type development for R09/Rodinal in 20-25 minutes at 18-20C is not any problem. Not boring, not time consuming for me. In my gallery on Photo.net you can see a regular R09 1+50 development for Fomapan Creative 200 (T200) from 2005 made in Prague / Praha. Even the scan is from that date on an old type Epson 3170 flat bed scanner.</p>

<p>http://www.fotografie-in-schwarz-weiss.de/sw-fotografie/wissen/90-filme-entwickeln-die-richtige-bewegung.html</p> <p>A more or less "scientific" article about R09/Rodinal. It is not from me but proving slow agitation is necessary for max. acutance and minimum grain.<br> In fact "stand" development without any agitation is searching for problems. You can prolong the oxidizing proces by putting the tank in the fridge. Some people are doing this for optimizing their "stand" development.</p>

With over 45 years R09/Rodinal experience I can say that you need at least 5-5,5ml concentrate R09/Rodinal for an average 120 roll film or equivalent in surface aera 135-36 film. You need minimum agitation because otherwise you can have uneven development and you will get less sharp negatives. Above 1+200 dilution the process will stop after approx. 45 minutes because the high diluted R09/Rodinal has completly oxidized.

You can have excellent results with the Rollei Digibase C41 kits which are in fact Fuji Hunt minilab split up kits for smaller amount and a chemical rippening with the starter. Or you took the wrong temperature. When I am working with a Jobo processor CPA-2 with elevator I am measuring the temperature at the first bottle, 38,5C! In the drum it must be 37,8C +/- 0,5C / 100F. Use a calibrated thermometer. Also use the exact amount of the starter, only the first time, otherwise your C-41 developer is already exhausted. The rest is all standard. When re-using the chemicals you must flush with demi-water between the steps!