Search:

Type: Posts; User: Neil Purling; Keyword(s):

Page 1 of 7 1 2 3 4

Search: Search took 0.06 seconds.

  1. Replies
    24
    Views
    1,160

    Re: Arista Ortho Litho Help

    Try the Rodinal and the development time in my post with a sheet of the Arista film for 3 ASA. Then let me know the results.
    Try on a overcast day, if you can, so the overall contrast is less.
    The...
  2. Re: Use of X-ray film: technical discussion with example images

    The first X-ray film I got was via Forum members. This is medical stuff. Then I got a huge amount of Foma Indux R4 4x5, this is industrial use film.
    It seems to be 6 ASA at best. I am still not...
  3. Replies
    24
    Views
    1,160

    Re: Arista Ortho Litho Help

    Are you after normal pictorial contrast?
    If yes then maybe you should try 3 ASA, yes that low and develope for 3 minutes.
    How much of that Dektol do you have? As our friends have said it is not...
  4. Re: Use of X-ray film: technical discussion with example images

    Did anyone buy any of the Foma Indux R4 NDT x-ray film?
    I am just wondering if anyone managed to lower it's contrast somewhat.
  5. Replies
    5
    Views
    1,646

    Re: 4x5 X-Ray film

    UK Only. Sorry LabRat.

    For the UK residents the minimum order is 2 boxes, thus 100 sheets.
  6. Re: Use of X-ray film: technical discussion with example images

    You should e-mail the seller at the address I gave in order to negotiate the price. Especially if you want several boxes of film.
    Then you have to add on shipping of course, which is probably going...
  7. Replies
    5
    Views
    1,646

    Re: 4x5 X-Ray film

    Who cares, if it means you can score some film cheaply?
  8. Replies
    5
    Views
    1,646

    4x5 X-Ray film

    For UK-only postage.
    Foma Indux R4 10x12cm in daylight Fomapak. Fifty packets per box.
    The film is double-sided and appears somewhat orthochromatic.
    Contact: info@HexagonLimited.com. State that...
  9. Re: Use of X-ray film: technical discussion with example images

    I regret the seller of the material has indicated UK only.

    If anyone from the UK wants any of this film they have indicated a minimum purchase of 2 boxes (100 sheets).
    Interested persons ought...
  10. Re: Use of X-ray film: technical discussion with example images

    Would any users of 4x5 like to obtain some x-ray film?
    It is 10x12cm, so it does not need to be cut down. It is double-sided & apparently somewhat orthochromatic.
    The film is in daylight packets,...
  11. Re: Use of X-ray film: technical discussion with example images

    I didn't think THAT was possible. Looks like a orange filter on normal film.

    Who made Crontex MRF 21 Plus?
    Back in 2016 I obtained some from a member of this Forum, and it wasn't the Member I...
  12. Re: Use of X-ray film: technical discussion with example images

    andrew: The x-ray films are not sensitive to the warm end of the spectrum. Just about as far as green, but no further. It means the usual filters for B&W film do not apply.
  13. Re: Use of X-ray film: technical discussion with example images

    One thing I noticed about using X-ray film was that the speed, such as it was went off as the sun got lower. I assume it is because there is less blue light present.
    In this shot of the hawthorn...
  14. Re: Use of X-ray film: technical discussion with example images

    What was the effective speed of the film used to take the shot of the Ford flathead V8?
    I usually use Rodinal myself, but I have run out at the moment. So I have had to use Fomadon LQN dil 1+10....
  15. Re: Use of X-ray film: technical discussion with example images

    In the scene I was using as a test it was a garden on a cloudy day with the corner of a brick building with a white door frame. I don't think either film has any red sensitivity, so that brick is...
  16. Replies
    69
    Views
    16,203

    Re: Weegee fact or? 1/200 with flashbulbs?

    If you are photographing a corpse in a shop doorway & it IS starting to move then is was only a drunk sleeping it off. If it was shot and obviously re-animating then you have proof of the beginning...
  17. Replies
    69
    Views
    16,203

    Re: Weegee fact or? 1/200 with flashbulbs?

    I was wondering about a lot of aspects of Weegee's technique.
    In the back of my copy of Naked City Weegee mentioned that he used Kodak Super Panchro Press Type B. I have no idea about the speed (in...
  18. Replies
    3
    Views
    928

    Re: Fomapan 200

    Just raked through my little black book. I had 10 min 1:50, but that was for 35mm. I just wondered if 4x5 was any different.
    I think the Fomapan 200 is about the best film I have at present. The...
  19. Replies
    3
    Views
    928

    Fomapan 200

    In Rodinal it is about 125 ASA, like FP4 Plus. What sort of time is best when diluted at 1:50?
    Once I got that right I wanted to pull it 1 stop for 60ASA.
  20. Re: Use of X-ray film: technical discussion with example images

    OK. So I have received the film. It is in vacuum-sealed daylight packets sandwiched between two sheets of lead foil.
    I am assuming that the film is coated on both sides, because I can't tell any...
  21. Re: Use of X-ray film: technical discussion with example images

    Has anyone here used Foma Indux R4? It is intended for NDT use in industry & I know nothing beyond what is on the Foma site.
    I have no idea of the sensitivity or the speed when developed to give...
  22. Re: "True film speed" vs just developing the film more?

    That's what I was told: Exposure changes the shadows and development changes the highlights.

    Fomapan 400 was not giving the stated speed on the box, because shadow detail was lacking.
    That is a...
  23. Re: Use of X-ray film: technical discussion with example images

    It is something that happens with the Fink-Roselieve tank if one tries to develope too many sheets of film at once. However, in this instance I was distracted from my duties.
    I usually develope no...
  24. Re: Use of X-ray film: technical discussion with example images

    I went to the windmill at Skidby yesterday.
    I was going to take a walk along a footpath into the village & back, but I saw this huge bank of lead grey clouds coming.
    The last thing I wanted was for...
  25. Re: Use of X-ray film: technical discussion with example images

    The film may be 100ASA, but is seems rather grainy. Is that likely to be because it is double-sided coating?
    The image is taken from x 30x40mm dental X-ray film used for research purpose in getting...
  26. Re: Use of X-ray film: technical discussion with example images

    I mentioned developing in Rodinal 1:200 for 6 minutes which I tried with dental X-ray film exposed in a 35mm camera.With the film developed in a tank I was agitating for the first 45 sec & then 15...
  27. Re: Use of X-ray film: technical discussion with example images

    I have never done tray developing. If you knew a film took 6 minutes in whatever juice in a tank, then it would be the same or pretty close for a tray? I am assuming that the different agitation...
  28. Re: Use of X-ray film: technical discussion with example images

    It would take a very long time to read through four thousand posts to find those that involve Rodinal and X-ray film.
    Those posts I have read mention a 1:200 dilution for 6 minutes or 1:100 for 4...
  29. Re: Use of X-ray film: technical discussion with example images

    I got two 8x4.2" trays from an electronics emporium.They are meant to be used when etching printed circuit boards and are flat bottomed.
    I can tape a bin bag over the window at night and Bob's yer...
  30. Re: Infos about 8x10 in. Carestream x-ray film

    Glass plates were probably thicker than film and you may need to insert something else in the plate holders in order the sheet film is kept totally flat.
    I believe that the correct safe-light for...
  31. Re: Use of X-ray film: technical discussion with example images

    I received some 4"x4" X-ray film: Crontex MRF 21 Plus & loaded it into some holders. I never heard of the film, so i assume it is double-sided unless a Forum member knows for sure

    The person also...
  32. Re: Use of X-ray film: technical discussion with example images

    For medical purposes I believe the correct exposure is given thus: Anode voltage & current flow in the X ray tube + time.
    Where sensitivity to X radiation is concerned the difference between bands D...
  33. Re: Use of X-ray film: technical discussion with example images

    Is dental X-ray film normally double-sided? That is what it looks like. The pocket had no lead foil inside. The film was enclosed in a fold of black paper.
    The emulsion/s, if there are coatings...
  34. Re: Use of X-ray film: technical discussion with example images

    I sacrificed one piece. The packet (& film) are impressed with a pimple mark in one corner, which shows which side should face the tube.
    You wouldn't know which side the emulsion was from the...
  35. Re: Use of X-ray film: technical discussion with example images

    If it were elephant size sheets the box would provide a thousand sheets of 4x5.
    Seriously: Does anyone know Cantonese, or whatever the script is?
    If the packet colours do not follow international...
  36. Re: Use of X-ray film: technical discussion with example images

    The first of my X-ray film has arrived... As you can see it was the box of dental films. I only ordered it on the 19th April & it came from China a week later!
    Can anyone read the script on the box?...
  37. Replies
    44
    Views
    14,012

    Re: 4x5 developing tanks?

    I have a Fink-Roselieve tank which looks like it can take several formats like 4x5, quarter-plate and 2x3. It is similar to the Yankee, except that the film sheets stand in 'portrait' format, wheras...
  38. Replies
    6
    Views
    2,244

    Re: using an aero ektar

    I have heard the Aero-Ektar were corrected for working wide open or nearly so and the correction focuses on the red end of the spectrum. I don't know if any of that is true. One of those on a 4x5...
  39. Re: Use of X-ray film: technical discussion with example images

    Barnacle: I wouldn't worry about stripping until we have developing technique worked out and have negatives that have a normal contrast you would see in a conventional camera film. I am going to see...
  40. Re: Use of X-ray film: technical discussion with example images

    Has anyone made images on D, E or F speed dental film?
    I know it is only 30x40mm, but I wondered what the effective speed was.
    I am aware of the differences between the speed ratings: F being 50%...
Results 1 to 40 of 275
Page 1 of 7 1 2 3 4