I’m not one for using preset jpeg effects often, but I’ve come to like one from Ricoh quite a bit. The Positive Film effect on the GR suits my tastes. I don’t usually use presets because a BIG part of the photographic experience for me is spending time in post-processing working on images. But, there are exceptions.
I’m sure there is a preset out there in some photo editing suite that can replicate the Positive Film effect, but I haven’t found it and there’s really no need to go out searching for one since the GR nails it every time.
Even at its default setting, from what I can see it looks like the image has a bit of extra saturation, is slightly warmer and has visible vignetting in the corners, even when set to weak. If you dive into the Positive Film effect a little further, via the Fn2 button you can set up the preset more to your liking.
Below are the settings I’ve used on most of these images.