16 votes

Why is analog black&white film slightly violet?

Its been a very long time, but I believe this is caused by inadequate rinsing of the negative during processing. The film has a coating to reduce light reflecting from the film backing itself. It is ...
cmason's user avatar
  • 14.8k
10 votes

50+ year old ilford film

The image captured on photographic film is called a latent image. Translated, this means an image invisible unless somehow treated to cause a visible image to appear. The latent image is best when the ...
Alan Marcus's user avatar
  • 39.2k
7 votes

Why is analog black&white film slightly violet?

The color of a B&W negative is irrelevant unless you're using color print paper. If you have true B&W paper, then all that it cares about is the relative irradiance. You could print with any ...
Carl Witthoft's user avatar
6 votes

My film didn't fully develop

It looks like your film was developed just fine. What you're seeing is fogging by an unwanted light source. The sprocket hole 'ghosts' are quite indicative of this. It seems the film was fogged when ...
timvrhn's user avatar
  • 2,702
6 votes

Recommended ISO setting when shooting with Ilford Delta 400 Professional film?

Each film has a personality that is further accentuated by developer and pushing or pulling. If this is your first go around with Delta, I'd recommend shooting it at box speed (400) and seeing if ...
OnBreak.'s user avatar
  • 20.5k
5 votes

Horizontal line across beginning of film roll

If it’s limited to just the first few frames, there are two likely causes: It could have been caused while rolling the film in the developing holder or while removing the excess humidity on the film ...
abetancort's user avatar
5 votes
Accepted

Big white circle on scanned negative

Are they on the negative itself (look at the actual negative)? If so, they're probably water drops. You need to use a wetting agent (e.g. Kodak Photo-Flo) to avoid water marks. If they're not on ...
Jim MacKenzie's user avatar
5 votes

Recommended ISO setting when shooting with Ilford Delta 400 Professional film?

I'm curious what's motivating your question since the film's name (Delta 400) is telling you exactly where to start. Camera is irrelevant insofar as it's capable of handling the range of film speeds ...
bvy's user avatar
  • 1,076
4 votes

Why is analog black&white film slightly violet?

Each manufacturer uses a slightly different film base. Ilfords is slightly purple, Kodak's slightly cyan on some and Agfa had a slight green cast. This changes by film type as well within a brand. The ...
Kim Brun's user avatar
4 votes

Why is analog black&white film slightly violet?

Early photo materials were not very sensitive to light. Additionally bright objects often imaged as a blurred splotch. This imperfection is called a halation. The solution is various colored dyes ...
Alan Marcus's user avatar
  • 39.2k
4 votes

Noise reduction with 35mm scanned negative film

The best settings in Lightroom will depend both on your scanner and on the exact type of film you are processing. I am not very well familiar with Lightroom, but I believe that there are no auto-...
jarnbjo's user avatar
  • 3,282
4 votes
Accepted

Ilford Delta 400 film should I develop with Rodinal or D76?

This will be a personal artistic decision - it is not like one of the developers would work and the other would not. Both are fine, and both are different. Having said that: the typical use case for ...
Jindra Lacko's user avatar
  • 5,990
4 votes
Accepted

35mm Black and White Film Artifacts

There are three likely causes of this kind of mark on the film. First, bromide drag from insufficient agitation. Second, surge marks from excessive agitation. Neither one is very likely for film ...
Zeiss Ikon's user avatar
  • 7,141
4 votes
Accepted

120 film wasting and Hasselblad 500CM

120 film produces 12 exposures in cameras that (nominally) shoot 6x6 images, such as your Hasselblad. Other cameras shoot different formats; a camera that shoots 645 format for example will get 16 ...
osullic's user avatar
  • 12.1k
3 votes

Why did my developing tank almost burst open when using citric acid as a stop bath after developing with caffenol delta recipe?

When an acid solution such as citric acid and an alkaline solution such as Caffenol developer are combined, chemical neutralization results. A salt solution is the product and carbon dioxide gas is ...
Alan Marcus's user avatar
  • 39.2k
3 votes

Why is this photograph shot with Delta 400 and developed with D76 1+1 so grainy

If I had to guess, I would say that this image was underexposed and then corrected for (perhaps unwittingly) when scanning. Two reasons for this guess: You mention you metered using the camera's ...
timvrhn's user avatar
  • 2,702
3 votes
Accepted

How many minutes should I develop Ilford HP5 in Rodinal 1:50?

Ilford HP5+ is a film emulsion well known for its ability to stand a lot of abuse as far as exposure is concerned. It was developed with newspaper photojournalists in mind - these guys were not ...
Jindra Lacko's user avatar
  • 5,990
3 votes
Accepted

Very long exposure with Ilford film

The information you require is available on the Ilford website: https://www.ilfordphoto.com/wp/wp-content/uploads/2017/06/Reciprocity-Failure-Compensation.pdf It differs depending on the film in use, ...
osullic's user avatar
  • 12.1k
3 votes

Why is analog black&white film slightly violet?

During exposure light travels through emulsion, bounces back from the backing layer and exposes the emulsion again, this time with blurred light, adding halos to the image. This reflection can be ...
MirekE's user avatar
  • 5,205
2 votes

Recommended ISO setting when shooting with Ilford Delta 400 Professional film?

For the first time pick something tried and tested - D76, ID11 or the like. Rodinal is not a great idea for starting with the tabular grain films (perhaps later). Once you get the hang of it try ...
Jindra Lacko's user avatar
  • 5,990
2 votes
Accepted

Is Ilford's XP2 Super film long-lasting enough for archival purposes?

If you want long archivability characteristics then you should stick to regular B&W film. XP2 is chromogenic film which uses dyes during development to produce the image. These dyes do fade out ...
K'''s user avatar
  • 6,497
2 votes

Very long exposure with Ilford film

I recommend some experimentation to determine the exact reciprocity curve for your film and situation. There are many factors which influence a reciprocity curve so while bracketing a 10 minute ...
PhotoScientist's user avatar
2 votes

Why are there multiple white spots on photos taken with a Praktica IV camera?

The white spots look as if you have an old and leaky cloth shutter. The L- and BC-series Praktica cameras East European shutterbugs grew up with have very reliable metal shutters. However, the ...
Jindra Lacko's user avatar
  • 5,990
2 votes
Accepted

How many rolls can be processed with ILFORD powder developers at various dilutions?

Your numbers sound correct. When using multiple rolls of film in a given development run, you Do Not increase development times beyond what you would expect to use if doing a single roll. If the ...
TheLuckless's user avatar
  • 2,330
1 vote

Why did my developing tank almost burst open when using citric acid as a stop bath after developing with caffenol delta recipe?

Going from developer to stopper means going from basic to acidic milieu. Washing soda is basic because it is a salt of sodium from a comparatively weak acid. If you add a stronger acid, like citric ...
user95069's user avatar
  • 1,106
1 vote

Long exposure with Ilford film

Controlling contrast like that would usually mean going for a low contrast developer. If you're into homebrewing you could try POTA or Delagi #8; the recipes are freely available. Stand developing ...
Derek's user avatar
  • 11
1 vote

How many rolls can be processed with ILFORD powder developers at various dilutions?

Developers are mixed with water to make up a stock solution according to directions on the package. You must mix-up a whole package at a time due to the composition of the powdered ingredients. They ...
Stan's user avatar
  • 5,521
1 vote

How many minutes should I develop Ilford HP5 in Rodinal 1:50?

Jindra Lacko's answer directly answers your question, but I wanted to add this: You can push the accutance a tad more if you go with a super dilute stand development using Rodinal. This also reduces ...
OnBreak.'s user avatar
  • 20.5k

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