Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,526   Posts: 1,543,904   Online: 1047
      
Page 1 of 2 12 LastLast
Results 1 to 10 of 12
  1. #1

    Join Date
    Mar 2007
    Location
    Korcula, Croatia
    Shooter
    35mm RF
    Posts
    5

    ADOX(efke) push processing

    Hi,

    does someone know developing times for push processing (35 mm):

    Efke (ADOX CHS) 100 ; Efke (ADOX CHS) 50 ; Efke (ADOX CHS) 25 ?

    At home I have ILFORD MICROPHEN, ID - 11, XTol , ROLLEI RHS .


    Davor

  2. #2
    Ian Grant's Avatar
    Join Date
    Aug 2004
    Location
    West Midlands, UK, and Turkey
    Shooter
    Multi Format
    Posts
    16,269
    Images
    148
    Remember those are the Tungsten light speeds, daylight is a stop faster.

    Ian

  3. #3

    Join Date
    Nov 2010
    Location
    Paris
    Shooter
    Multi Format
    Posts
    70
    You mean Adox CHS100 has to be shot at 50ASA in daylight, CHS25 at 12ASA etc ?

  4. #4

    Join Date
    Mar 2007
    Location
    Korcula, Croatia
    Shooter
    35mm RF
    Posts
    5
    Thanks Ian. I know that, but I am interesting to expose and develop Efkes to higher ISO
    than it's nominal. It is possible with Acufine (efke 100 to 250). I need informations for
    some other developers maybe ILFORD MICROPHEN, ID11, Xtol, Rollei RHS .
    Davor

  5. #5
    Ian Grant's Avatar
    Join Date
    Aug 2004
    Location
    West Midlands, UK, and Turkey
    Shooter
    Multi Format
    Posts
    16,269
    Images
    148
    Look at the old Adox EFKE Data sheet Kb/R 14 is now called Adox CHS 25, the 17 -50 and the 21 -100. The old names were the DIN speed in Tungsten light, the new ones the ASA/BS part of the ISO.

    Click image for larger version. 

Name:	adox-Efke.jpg 
Views:	15 
Size:	93.5 KB 
ID:	63588

    I think Microphen would be the closest to KR E24, you might use the EFKE recommended starting times, and those speeds you want are there in the datasheet. Many Eastern block PQ developers were similar to Ilfords published formulae.

    Ian

  6. #6
    nicholai's Avatar
    Join Date
    Jul 2012
    Location
    Kolding, Denmark
    Shooter
    Multi Format
    Posts
    294
    Quote Originally Posted by Tofek View Post
    You mean Adox CHS100 has to be shot at 50ASA in daylight, CHS25 at 12ASA etc ?
    I assume it's the other way around; CHS100 is to be exposed at EI 200 in daylight.
    Nicholai Nissen
    Kolding, Denmark
    nicholainissen@gmail.com

  7. #7
    Ian Grant's Avatar
    Join Date
    Aug 2004
    Location
    West Midlands, UK, and Turkey
    Shooter
    Multi Format
    Posts
    16,269
    Images
    148
    Quote Originally Posted by nicholai View Post
    I assume it's the other way around; CHS100 is to be exposed at EI 200 in daylight.
    That's right, in fact for a number of years a UK chain of photo stores sold EFKE films under their own brand name and they were sold as 50, 100 & 200 ISO films. So CHS 100 was Jessops 200.

    I began using KB14 later renamed EFKE (Adox) 25 back in the 70's and in more recent years have used the Pl25 sheet film version, I expose & process at 50 EI, which is what I rate Tmax 100 at, and I process both for the same development times - sometimes in the same tank.

    Ian

  8. #8

    Join Date
    Mar 2007
    Location
    Korcula, Croatia
    Shooter
    35mm RF
    Posts
    5
    Thanks for (old) data sheet Ian. I shooted KB25, KB50 in daylight at their nominal speed, developed in TETENAL NEOFIN BLUE and results were very good. But, developing in PERCEPTOL is different , must be expose at lower sensitivity. Obtained speed is depending on developer. That is my experience.
    Davor

  9. #9
    ath
    ath is offline
    ath's Avatar
    Join Date
    Aug 2006
    Location
    Germany
    Shooter
    35mm
    Posts
    890
    And Maco PO100 is supposed to have been a (maybe selected?) batch of Efke 50.
    Regards,
    Andreas

  10. #10

    Join Date
    Jul 2010
    Location
    Southern USA
    Shooter
    Multi Format
    Posts
    3,831
    Under exposing by one stop should be within the latitude of most films and would be developed normally. Anything more than one stop will result in a loss of shadow detail. Extending development to compensate will result in higher contrast abd grain. Photographers do not usually push slow or medium speed films under normal conditions but just shoot a faster film. This produces better results than pushing.
    A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral.

    ~Antoine de Saint-Exupery

Page 1 of 2 12 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin