How to loop sequentially through images in one folder and compare with the latest image in another folder

I am trying to use the shell to loop sequentially through images in one folder and compare with the latest image in another folder.

One error i'm getting is -

zsh: no matches found: /TiffOut/*.tiff(.om[1])

Though I wouldn't be surprised if thats not the only problem.

What I'm hoping to acheive is:

• Loop through all source images in current directory:
• Put most recent file from TiffOut subdirectory in variable 'latest'
• Compare current source, and latest output with '-evaluate-sequence max' to create new tiff with the brightest parts from each image_file
• Save to TiffOut subdirectory

Heres my full script -

#! /bin/zsh -
filelist=$(ls | grep '.tiff')
for image_file in $filelist
do
latest=$(/TiffOut/*.tiff(.om[1]))
magick $image_file $latest -evaluate-sequence Max '/TiffOut/out_${imagefile}.tiff'
done

Thanks for reading