One of the two images above is Nostalgic Neg. and the other is Eterna. Can you guess which is which?
The Nostalgic Neg. image is made using the Timeless Negative Film Simulation Recipe. The Eterna image is modified to resemble the Timeless Negative recipe.
Let’s look at another set.
I bet you’ve figured out which is which, but if you haven’t, in the train picture at top the left is Nostalgic Neg. and the right is Eterna. For the set above, the Eterna picture is left and the Nostalgic Neg. is right.
What’s different between the two? There’s quite a bit different between out-of-the-box default Nostalgic Neg. and Eterna, but Eterna can be made to look quite similar to Nostalgic Neg.—this was just a quick experiment, and with some more time and work, I could probably get it even closer. Nostalgic Neg. has a little more contrast, a lot more vibrant colors, and is slightly warmer than Eterna. With some modifications to make the two appear similar, though, it seems that the biggest difference is that Nostalgic Neg. is slightly warmer and more vibrant in the shadows, and yellow is rendered a little more deeply; otherwise, you can almost match them identically.
So what does it take to create faux Nostalgic Neg. with Eterna? I’m still fine-tuning it, but I believe that, using Eterna, reducing Highlight by -1, increasing Shadow by +1.5, reducing Dynamic Range by one or maybe two spots, adjusting White Balance Shift by +2 Red and -1 (or maybe -2) Blue, increasing Color by +6… this obviously means that Color has to be a negative value (at least -2) on Nostalgic Neg. in order to match it. This is all still a work-in-progress, but it does mean that a fairly close faux Nostalgic Neg. recipe for X-Trans IV is possible, and in the process of being created. If you feel as though you’re missing out on Nostalgic Neg.—don’t fret!—if your camera has Eterna, it can, to an extent, mimic it—stay tuned for a Film Simulation Recipe!