Capturing a Screen

Re. my previous comment below, I should have added these two image related macros:
3. The PasteImageInComment macro will paste an image from the clipboard or from a file as background in a cell's unthreaded comment (Note).
4. The ClipboardImage macro simply saves an image from the clipboard to a file of type PNG.
The PasteImageInComment macro utilizes the following function:
=ImageInComment(ImageFile, [Target}, [ScaleFactor], [RotateAngle], [NoAuthor])
where ImageFile (text) is a filename of type BMP, GIF, JPG, PNG, TIFF, WMF, etc. This function applies the image from ImageFile as Fill Effect in Target's unthreaded comment. The image's size is adjusted by ScaleFactor, which defaults to 1. If RotateAngle is 90, 180, or 270, it specifies degrees of clockwise image rotation; any other value is ignored (default is 0). If a new comment is necessary and NoAuthor is TRUE, the new comment will have blank text; NoAuthor's default is FALSE. The text of existing comments is never altered.
Finally, the following function returns an array of properties for ImageFile's ActiveFrame:
=ListImageProperties(ImageFile)
Expect 2 columns and 18 rows.
See https://sites.google.com/view/MyExcelToolbox/

I typically want the rectangle tool to select just a portion of the screen. I find the fastest way of doing this is to use <windows>+<shift>+S. Left mouse click and drag to select the rectangle to copy.
This will put it on to your clipboard and if you have notification turned on for the Snipping Tool will also put it in there in case you want to mark up the image. It has the added benefit that in most cases it will include the drop down menu you had open at the time, which can be rather elusive.
Having the screen clipping tool in your quick access toolbar in Excel or other office application ie Word or Outlook is another way to quickly grab a screen shot from somewhere.

Erik mentioned the Camera tool in his comment below.
For an equivalent of the Camera tool, copy (Ctrl+C) a region of the active sheet, then select another cell on any sheet and pick Home > Paste > Linked Picture (Alt+H+V+I).
My Excel Toolbox includes the following two macros to create an image of a range of cells. In addition to cell values, the images will include visible portions of shapes or charts from the copied range.
1. The SelectionImage macro copies the selected range as a static image on the clipboard and optionally saves it in a file.
2. The DynamicImage macro copies the selected range and pastes it as a dynamic image in any sheet of any workbook. All changes visible in the source range will be reproduced in the dynamic image (assuming the source is open in Excel). The result is a simple dashboard.
See https://sites.google.com/view/MyExcelToolbox/

Two notes related to capturing a screen:

1) How Excel manages size and quality of images can have a big impact on file size and retained image quality. You can find he settings in File/Options/Advanced.
(see Figure 1 below)

2) You can use Excel's Camera command to make a living image of any area of a worksheet to paste somewhere else within Excel. "Living" meaning when anything inside the captured area changes, the image you pasted also changes. You can add the Camera command to your ribbon by going to File/Options/Customize Ribbon and selecting Camera. You might have to choose "All Commands" for the list, as it probably isn't listed under "Popular".
(see Figure 2 below)