If you are a new visitor to this blog then you might have the impression that I am a black and white photographer – not so. What I find however is that I am producing more and more black and white work recently. The reason being is that I think the black and white images shot on my GX1 look great; better than those shot on my Canon 5D or even those shot with true black and white film (which by the way I still use). I have thought a lot about why this is and I believe it is linked to the sensors used in the Micro 4/3 range of cameras.
All cameras produce a pattern of noise in the images they produce. Colour noise looks ugly and is best removed but the luminance noise can be used to your advantage in black and white pictures. Usually you don’t notice this noise but under strong processing it starts to become more visible especially if you are looking on a screen with the image viewed at 100%. With my Canon 5D the noise pattern is very regular, quite light and to be honest looks ugly when enhanced. With the micro 4/3 cameras however this luminance noise is a little stronger and the pattern more appealing. When the images are converted to black and white the noise appears almost like the grain structure in film. The benefit of having this fine structure in your images is not to make it feel like film but to enhance areas of detail so images appear more detailed than perhaps they are. When output to paper the prints definitely have an extra snap to them.
Here then is my workflow for making the most of the micro 4/3 characteristics when producing black and white images:
- Shoot in RAW. This gives you the control over how much noise is removed. If you shoot using the in-camera black and white mode you will end up with JPGs which will have had varying degrees of noise reduction applied before you start to work on them. You don’t want this.
- Because you are shooting in RAW you will need to convert the image to a TIFF file. I use Lightroom to do this and I apply sufficient Colour Noise reduction to remove all the visible colour noise. With Luminance noise however I set the reduction to 0 so that nothing is removed. I also avoid converting the image to B&W until later in the workflow for reasons I will come to.
- Once I have my colour TIFF image I examine it to see if I want to perform any selective luminance noise reduction. I will usually leave all the noise in areas of texture such as grass and rocks but remove noise from areas of clear blue sky. Personally I like to leave some luminance noise in white clouds as it helps me emphasise the clouds later.
- I use two tools for noise reduction; Nik Define and Topaz DeNoise. The Nik product is quite subtle and has some great selection tools to control where the noise reduction is applied. The Topaz product is noise reduction on steroids. It can be extremely aggressive but it’s also brilliant. If I want to remove strong noise from the image, this is the tool.
- Once I have my “clean” colour image I will convert it to Black and White using Nik Silver Efex Pro 2. I do have other black and white converters but what I like about the Nik tool is that I have a “Structure” and “Fine Structure” slider. The effect of using these is that it enhances the Luminance noise so it becomes much more visible and starts to take on the appearance of grain. I should also warn you to take care with this step as once you have enhanced the noise there is no easy way back. Running noise reduction on the finished image won’t have much if any effect.
Now what I can’t show you here is the effect of this workflow on the finished print so you will have to take my word or try it for yourself. This really does enhance the print giving it that something extra, improving the perception of detail and sharpness. You can get some idea of how the screen image will look as a print by viewing your image at 50% resolution from about 12 inches away (a general rule of thumb).
If you have a micro 4/3 camera I hope this has inspired you to give my method a go and I am as always happy to answer any questions.
2 thoughts on “Great Black and White Images from Micro 4/3 Cameras”
Thank you for your processing information.
I have a question that is not directly related to noise reduction but is part of my general post processing which I hope you do not mind me asking here.
Lately, I seem to be introducing fringing into my images particularly around objects that are very dark or black. I have been trying to work out what is the most likely thing to causing this to happen but I am not coming up with a definate answering. I am thinking that it maybe during sharpening but I am not sure.
Are you able to advise of what can introduce fringing?
Hi Paul, there could be a lot of reasons for this fringing so if you don’t mind can you email me with a JPG example of a problem image together with some bullet points describing your workflow. It is quite possible that sharpening is the culprit as basically sharpening works by increasing the contrast along edges. If you make the radius too large and apply the sharpening too strongly you will see the halo along the edge.