CMST 325: Image Editing

CMST 325 at UMGC introduces digital image editing in Adobe Photoshop: creating new images, editing existing ones and preparing them for print, web and other media.

UMGC's catalog now lists the course as WDDE 325, Image Editing (formerly CMST 325). Its later partner, Advanced Image Editing (WDDE 425), requires it as a prerequisite, so the techniques here are the foundation for that course too.

Photoshop has many ways to reach the same result, and that is the trap. Edits made directly on pixels are hard to undo, so instructors often reward a clean, non-destructive workflow as much as the final image.

What CMST 325 Covers

The official description covers terminology, tools, theory and the process from concept to completion, plus ethical and legal issues. In practice that usually means:

• Selections: isolating parts of an image accurately.
• Layers and masks: building images in editable pieces.
• Tonal and color adjustments: levels, curves, hue and saturation.
• Retouching and repair: removing blemishes, dust and distractions.
• Compositing: combining several images convincingly.
• Output: resolution, file formats and color for print versus screen.
• Ethics and law: manipulation, honesty in editorial images and image rights.

Key Concepts Explained

Non-Destructive Editing

Adjustment layers, layer masks and Smart Objects let you change an edit later without damaging the original pixels. Erasing or painting directly on the photo layer cannot be undone once the history is gone.

Reading a Histogram

The histogram shows how many pixels sit at each brightness level. A graph bunched to the left means a dark image; gaps at both ends mean flat contrast. Levels and Curves adjustments spread the tones out.

Resolution and Output

Pixel dimensions matter more than the ppi number on its own. For print, 300 ppi at the final printed size is a common target; for screens, the pixel size of the display area is what counts.

Typical Assignments and How to Approach Them

The Ethics of Image Editing

UMGC's description lists ethical and legal issues as part of the course, and they come up in almost every editing decision. Correcting exposure, removing dust or straightening a horizon is generally accepted.

Adding or removing people or objects from a news photo, or reshaping a body in an advertisement without saying so, raises questions about honesty and harm.

A useful test is context. An obvious fantasy composite for a poster misleads no one. The same technique applied to a photograph presented as a record of a real event can mislead viewers, which is why many news organizations restrict manipulation of editorial images.

Image rights matter just as much. Photos found online are usually protected by copyright, even when no notice is shown. For projects, use your own pictures, public-domain material or images with a license that allows editing, and keep a note of where each came from.

Where Students Get Stuck

• Flattened files. Submitting a JPEG when the rubric wants a layered PSD that shows your process.
• Hard selection edges. Cut-outs with halos. Refine edges with Select and Mask.
• Mismatched composites. Elements lit from different directions look pasted in.
• Using found images. Pulling photos from search results without checking rights. Use your own or licensed images.

Study Tips for CMST 325

• Name every layer; it helps you and the person grading your PSD.
• Toggle adjustment layers on and off to judge whether an edit helps.
• Learn the keyboard shortcuts for brush size and mask color switching.
• Save a copy of the original image before you start any project.

How We Help with CMST 325

Send the brief, rubric, your layered file or screenshots and any instructor feedback. A tutor explains which tools fit the task, reviews your workflow and can provide a written walkthrough of a similar edit or a model ethics discussion response for reference.

GradeEssays is independent of the University of Maryland Global Campus. We offer tutoring and reference material only; the images and written work you submit must be your own, under UMGC's academic integrity policy.