There are sort of two schools of thought when using an HDR workflow: 1) Combine/merge your source images in your application of choice and use the toning controls in that application to produce an image that is close to final; 2) Combine/merge your source images and use the toning step to produce a flat LDR (typically 16bit) image that contains all of the dynamic range of the scene, ready for further editing.
I prefer the latter of the two approaches, as you do not need to get locked into a single application's specific toning algorithm and its potential deleterious effects (like halo, color shift, etc.). Use the HDR process to merge images (or blend images) and produce a nice, flat, balanced LDR output file that is ready for editing in PS or whatever application is most appropriate for the scene and image.
"SNS" is another application that merges and tones a sequence of images. Although it is called "SNS-HDR" my experience with it (a while back) is that it does not actually output HDR data - maybe this has changed. I know many people rave about its ability to produce "natural looking" results (and its separate highlight controls, as mentioned above) and it has robust and detailed controls for tone, color, etc.; however, it may not be the solution if you regularly need to output 32bit data from your merge (HDR, EXR, TIFF). It is PC only, as far as I recall.
As far as processing an enfused image ... the enfuse process should give you a good starting point for further processing (akin to option "2" described above). With tonal range compression, overall contrast usually needs to be reestablished in the image, as well as local contrast. So, make sure color is correct, add contrast and then season color further, to taste (sometimes manipulating contrast can desaturate the image) and make final tonal adjustments, etc. Also, enfuse does not automatically align your source images, so be careful of how you shoot or make sure you align your images prior to enfusing them - I know that the "LR Enfuse" plug in uses align-stack to perform alignment as an option prior to the images being handed off to enfuse. It sounds like this may be what you are using to generate your enfused images, so you should be good to go. Most blended or merged data needs to be sharpened though, even if they are aligned - small misalignments create soft images. Do not sharpen your images prior to blending or merging, as this tends to accentuate sharpening artifacts.
Attached is an edit of your enfuse.jpg attached file - A little over the top, but it gives you an impression of what can be done with the enfused image, even the jpg.
I used PS to straighten and remove some keystoning. I used the patch tool in content aware mode to remove the tire tracks (and I cropped some of the bottom as well). I added some local contrast and sharpening and then made some selective burn and dodge edits to "relight" the scene - this is better done in 32bit land, but it is perfectly fine to do it on LDR data as well, as your highlights are not super detailed (points of light) and work nicely when they are bright. I brightened the facade of the building as if it were lit with spots (like many folks do during the holidays) and I darkened the sky a bit. I also brought out some detail in the foreground tree, which is a nice element in the image. My edit could probably use a boost to the mid tones, etc.
What's nice about this approach too is, if your edit gets a little over the top, you can simply put it on a layer above the original image and blend it back into the flat image. You can do this ad infinitum, picking the best parts of each edit to make your final. Work quickly and don't shoot for a single, perfect version. This way you work loosely and explore the image, versus editing it to death. You can also blend some of your source images back into the final, etc. Have fun with it!
If you work this way, make sure you make perspective- and lens-type corrections first (even prior to enfusing maybe - say in ACR/LR), as you cannot blend a straightened image back into the unstraightened image, etc.
A pretty magical setting, for sure, lovely capture!
I hope you don't mind my editing your image.
Have fun!
kirk
