I'm going through all our old photos, scanning the prints with a document [sheet-fed] scanner. The name of the game is speed -- it seems an impossible amount of work otherwise. While the scans themselves have been / are accurate, many of the photo prints themselves need work, with sometimes fading colors, some showing color tints, and some just not taken &/or processed well. I could fix most if not all of them, but that takes time, and it also exposes a personal weakness -- once I start editing one of these photos, I have trouble stopping when the result is just adequate, tending to keep going until I have the best result possible. And that takes even more time.
That's where PhotoLemur 3 comes in... It automatically fixes images, and works with batches. It's also over-hyped in online reviews.
I stepped away from photography for several years, and many of these snapshots were taken with average consumer grade cameras, many 110 [with it's tiny negatives], and sent off for developing to the cheapest services. Depending on the photo, resolution, detail, and colors are sometimes far from great. Add the effects from age, and some of them look pretty poor. PhotoLemur helps, sometimes a lot, but only with a more hands-on approach. Left alone it can turn some of the poorest prints into garish nightmares, with a sort of poster effect featuring almost neon colors.
Hands-on with PhotoLemur 3 means selecting a profile -- there are 7, but one's the original & one's B&W -- and adjusting the level or amount of fixing PhotoLemur provides. I import a batch of photos, which are all shown in large preview thumbnails, then click on the photos that obviously need adjusting, one at a time to set the profile & level. Once I've gone through a batch this way I have PhotoLemur do it's processing, saving the files in the folder I specified in the format I specified [jpg 100%], which takes a while and a fair amount of CPU -- these aren't large files [<20MB .tiff], so IMHO figure on a pretty long processing time if using larger files &/or slower CPUs.
I'm definitely not a fan of auto-processing photo apps in general, but PhotoLemur restricts me so I can't go down the rabbit hole, spending time getting an image closer to perfect, so it does what I need -- make the photos I'm scanning at least nice enough to be viewable, and in some cases they are actually quite nice. PhotoLemur 3 includes Photoshop & Lightroom plug-ins, and can work with RAW image files too, but that's FWIW -- some people might use those, but doubt I ever will.
When it comes to price, at $35 PhotoLemur 3 is much less expensive than Perfectly Clear, the most often cited competition, but Perfectly Clear lets you do a lot more *if* you're so inclined. Their automatic processing is pretty much equal, but neither will fix the color tints in many of my aging prints. I bought a package from Humble Bundle that included PhotoLemur 2, & the upgrade to v. 3 cost me $15 -- if not for that, I'd only very grudgingly pay $35, based on the notion that I usually pay that, & often less for PaintShop Pro Ultimate, which gives you 100s of times more features. [PSP Ult. comes with a limited version of Perfectly Clear, & I could probably set it up to do close to the same thing I'm using PhotoLemur for, but at the personal risk that I'd be (far?) too tempted to go down that rabbit hole editing the images.]
A final note, there is a free version of PhotoLemur available, and v.2 may be found free or at a big discount, but both are less capable than v.3.