Double grade printing.

From time to time I find it strange the way events come together! for instance, I was in the darkroom working on some prints that I could not get the sky to burn in properly. There was nothing unusual in me burning in the sky, most of the photographs I produce have had the skies enhanced in some way. But this time I could not get it the way I wanted it.

The strangeness in this case was that a few days before, I was reading a thread on my favourite forum about how to deal with whited out skies when printing. I took part giving an account of my method of dealing with it. One of the other contributors suggested split grade printing. But when he described the process it is more akin to double grade printing - this is where you use another grade to bring out part of the image that will not burn in at the grade you are using.

All the circled images needed double grade printing.

The process:

The contact print in this case suggested that the stone work of the building and sky were under exposed when compared to the reflection. The segmented test print (grade 2) proved this by indicating that it may need to be burned in for an extra twenty seconds above base exposure of thirty seven seconds. Even with the extra light it did not make the difference. After a further print and forty seconds burn in, it still was not right. I decided to see if changing to a harder grade when burning in would make the difference.

With the discussion still fresh in my mind I opted to use the double grade method to see if it would solve the problem I was having. I normally would have used pre flashed paper but that would mean starting all over again with a pre-flashed test strip. I chose the simpler route of dialing in a harder grade, in this case 4, before burning in the sky and face of the building.

The red area indicates the over lap area of the mask.

Something to consider:

When using this method certain negatives can produce a grainier look to the picture which may not be to your liking and you need to be careful not to knock the masking frame when changing the settings and using the mask.

The burning in method:

It takes practice to get this method to look natural, which is easy to master when you have a nice defined area without things like buildings poking up above the horizon. A piece of card is needed to use as a mask. You do not need to use black card but if you have some all well and good. Otherwise any card will do, if one side is brighter than the other you should always make that side face the lens to reflect the light back. In my opinion you should make the mask smaller than the site that needs covering. Because the card is kept moving it will make up for the under size when used with an up and down motion. If you don't you can end up with a lighter shaded area a bit like an out line you would get if it was still. When you get it right it is very satisfying.

 Result:

I used forty seconds at grade four to burn in the building and sky. How did I know it would work? I further considered the segmented test print, took a calculated risk and listened to the little voice in the back of my head. In other words I went with the creative flow.

 

Basic outline for split grade printing.

Split grade printing with High contrast negatives.

Very high contrast grade 0

A recently developed set of negatives have shown themselves to be very contrasty even by my standards. During the summer I was on an early morning shoot, when I came across these scenes. They were not the easiest pictures to meter, there was a six stop difference between the light areas and the shadows in some cases. Two things drew me to them: the  way the shadows of the leaves danced on the walls in the gentle breeze and the other was a brief thought that they would be a challenge to split grade print.  

Soft grade 0

It has been suggested that split grade printing works better when the contrast stakes are raised. In these cases they maybe unprintable. The pictures were made using 120 format FP4+ developed in ID11 for 14 mins I know this is longer than what is recommended but I have found I have a tendency to under expose when using medium format cameras.

I used Ilford multigrade developer and RC paper. I tend to use RC papers in the initial stages or until I'm happy that the picture warrants printing on FB paper.

With grade 5 added

I started the grade zero test print for the Gate but it became clear while I was doing the timed segments that I may not need a grade five test because  the contrast was very high even for zero. I chose sixteen seconds for the gate picture to illustrate the degree of contrast this negative has. The window shutter picture also proved to be overly contrasty as well. I was quite happy with the results until I did a second print with the grade five added which now makes the first print look soft. It just goes to show how things change when you start to explore the subject at different settings. None of the prints have been manipulated by dodging or burning in which could class them as the perfect prints?

Split grade printing the next step dodging and burning .

Top grade Zero
Bottom grade five

The use of split grade printing has changed the way I work in the darkroom. Yes it takes a little bit longer having to produce two test prints, but in the long run it cuts down the amount of dodging and burning needed to achieve a finely toned photograph. I have also noticed a luminosity that has been missing from my graded prints. It has also shown me that it is an advantage and not a waste of paper to make full or half page test strips. You get a better understanding of how much more light is needed for the high lights, so you can build this into the first full print of the scene. This saves time and paper having to reprint it again and again to get it right.

I find that my more contrasty negatives are more easily printed using the split grade method, giving more control of not just the tones but also the contrast. Burning or dodging my prints has been reduced considerably, allowing me to add more detail at the extremes. 

So at what point should you be burning in or dodging? The grade zero exposure being the most important one is also the stage at which you should be making your adjustments. If possible you should be including them for the grade five test strip. By doing this you will have a better understanding of how the contrast affects the corrections and make allowances for them in the final print.

Some of you reading this will be thinking it's all to complicated and not for you, Dodging and burning is about having confidence in your ability, once you have done it and seen how it changes your pictures for the better, you will be wanting to do it every time. I enjoy this part of the picture making process, it always reminds me of a composer on the rostrum encouraging certain section of the orchestra to bring out his interpretation. Only you are using light to enhance what you had in your minds eye.

Burning in graduation times

OK I'm going to keep this simple just to give you the idea of what to do. I have only used grades 0 and 5 but in certain cases other grades maybe more appropriate but that is for another time.

Producing the prints:

I produced a soft toned (grade 0) test print at five second intervals. When it was dry I compared the segments to determine which would give the best overall toned exposure and how much extra light would be needed for the sky. I chose seven seconds for the whole picture, this allowed the street scene shadow to keep its detail without it blocking out. A further twenty one seconds would be added to the sky. With the main exposure done the sky was burned in. For this I used two black pieces of card held together to form a V shape. The trick with dodging (holding back the light) or burning (adding light) is to keep the mask moving otherwise a hard line will be left. I gently moved the card backwards and forwards lingering in places to give the sky a graduated look. The times on the picture are there as a guide.

Now I placed some black card over the masking frame to protect the picture from any stray light, while I adjust the enlarger to grade 5 for the contrast exposure. The first segment was covered and then exposed at two second intervals there after. Again when dry I chose 3 seconds.

Final print

With the all the times combined a full print was made. There are some short comings; firstly the build on the left could do with a bit more burning in to bring out the texture of the wall and if I wanted to be really picky the sky could do with masking in more precisely which would mean cutting a mask that mirrored the buildings outline.

 

The idea was to keep it simple and to show what could be achieved with the most rudimentary of masking off.

Silverproof and split grade printing

Split grade printing will work with all multi/variable grade papers whether resin coated or fibre base. But will it? Silverprint a London based company produce a limited grade paper that is very cost effective but is only produced in small batches.

Silverproof paper is still classed as a multi grade even though it does not have the full range of grades of the major manufactures. The paper is marketed as a proof paper for contact printing. Which I initially used it for. Until I up graded my processing tank to a 16 x 12, it was the only paper on the shelf of the right size to give this new bit of kit a workout! ( mentioned in an earlier post). It was then that I discovered it was more than a proof paper. I liked the tones it produced; admittedly these were graded prints.

After spending sometime getting to know what the paper could do at different grades with dodging and burning (some hundred sheets later); I started to play with the idea that it maybe possible to use the split grade method with Silverproof paper. The next time I was in the darkroom I set about testing the idea. Before I started I had to make my mind up as to what grades should be used with this paper. I settled on the basic method (as described in an earlier post) of using grade zero and five as a starting point adjusting the grades if necessary.

 

With the soft test print floating in the holding tank, I had to study it carefully when looking at the segments - it looked like a standard grade test print. I did wonder if this would be the case. Unperturbed by this I looked to the highlights and made a decision to expose for 27 seconds and then changed the enlarger settings for grade five. I felt that I needed to carry the test to its conclusion to be sure that the split grade method would not work. Fifteen minutes later the hard test print was floating in the holding tank. It was quite difficult to see the degrees of contrast between each segment making the decision to choose 12 seconds a educated guess. Looking back it was not the best subject to use for the first test, as the light was striking the scene head on.

Once the print was developed I studied it against both the test prints and felt that the split grade method had worked well enough for me to go forward with a second negative. This time the highly contrasty negative of the trees was used. With this picture it was easy to see the split grade method at work. I was almost side tracked by the amount of contrast the longer timed segments were indicating. I had to remind myself it was about tonality and chose accordingly.

Conclusion:

When using this method with Silverproof paper you need to choose the negatives you wish to print on the paper with care as it can be quite difficult to see an advantage over straight grade exposure.

Related post:
Silverproof paper

updated 2021

Please note that since writing this article silverproof paper is no longer made but the method is the same no matter what paper is used.

Basic split grade printing



Fig 1
Soft test print

A while a go I was on the FADU forum in the articles section reading up on another subject, when I came across an article by Les Mclean on basic split grade printing. I had a quick read and printed a copy off to read again and give it a try. It is suggested that using this method leads to a more finely toned photograph. Is this the case?  And how difficult is it to get right?

 

Before the introduction of Multigrade and varitone papers photographers used to buy individually graded papers. This led to a working method that was tailored to what grade of paper they had on the shelf. To a certain extent I still do this aiming to produce negatives that print well at grade three. Then burning in (more light) or dodging (less light) areas to gain a well balanced final print.

 

After reading the article several more times to get the basics into my head I was ready to give it a try. I chose a negative that  had a very wide range of tones, that would normally require burning in. The negative used was taken  on Agfa APX 100, ISO 100 developed in PMK Pyro. These negs on average print well at about grade two and half.

Fig 2
Hard test print

Split grade printing requires you to produce two test strips. One at grade zero a soft test strip (Fig 1)  and the second at grade five a hard test strip (Fig 2). Quite simple until you put it into practice for the first time! It maybe an idea to produce an idiot list, for a procedure prompter,  to help jog your memory hopefully reducing the mistakes.

 

First of all it is a good idea to start with a fresh print developer as it may take more prints than you expect to arrive at the end result. For this test I used whole sheets of Foma variant 311 gloss RC 10 x 8. Developed in Moersch 6 blue tone. I will also process a print in my usual way as a reference.

 Sequence:

1.           The first test strip should always be the soft one at grade zero which in my case I dialed in to the enlarger head. You can use individual multigrade filters. I have set the enlarging lens to F8 which is what I would normally set.

2.           I have used five second intervals to obtain the right exposure for the soft print (fig 1) If you feel you need to refine the tonal separation then you can do a further test strip of two second intervals. I have kept to the five second test strip to keep things simple.

3.           Once the test strip is processed and preferably dry, under good lighting check the strips. The trick is to look at the bright tones of each segment the one that produces the best bright tones is the one to choose. In this case about 16.9 sec's. The contrast has to be forgotten about it is all about tone. (fig 1) Be careful not to over do it as it can lead to a muddy looking final print.

4.           This is the start of the hard grade test strip (fig 2). Place a new sheet of paper in the easel and expose the whole sheet at grade 0 at your chosen time (16.9 sec). Be careful not to move the easel. I also covered the photographic paper with a piece of black card to protect it from any stray light when I turned on the enlarger, so I can see the dials when adjusting them to grade five. This is where I think using pre set filters has the edge.

5.           Cover a section of the exposed paper as a reference point from which you can see the increase of contrast. Now expose the following sections at  two second increments. (fig 2).

6.           Once the test strip is processed and preferably dry; under good lighting you are looking for the best section of tonality and contrast that will provide you with the image for your taste. In this case I have chosen eleven seconds.

7.           Now you are ready to combine both the times in the one print. Begin with grade 0 the soft settings (the tonal exposure) this should always be done first as it has the most influence on the final out come; then grade 5 the contrast setting. The picture oppsite shows the result. I must admit the outcome is brilliant in more ways than one. It has an unexpected vibrancy that conveys how sunny and warm the day was.

 

The picture below, is my reference print as you can see it requires more work to produce the tones for the wall in the background and sky. I get the sense that this image is lacking in something. A subjective notion that is a very individual interpretation.

 

Conclusion

Les Mclean's article sets the process out in a way that is easy to understand. I have followed it to the letter and the result speaks for itself. When embarking on new processes there is a certain amount of settling in. Once you are past these initial stages you are only two steps away from a finely toned image, that anybody, novices included would be more than pleased with. I think it is a more efficient method of producing prints and in some cases possibly more cost effective. This is only a basic introduction to the use of split grade printing but I can already see that it has advantages over the standard grade print, achieving a better toned image more easily.