Midjourney

Midjourney とは？

Midjourney is an AI image generator that turns written prompts into images. It started as a Discord bot and now also runs in its own web app, where you can write prompts, browse your past generations and edit results. It is widely used by illustrators, designers, marketers and hobbyists who want concept art, mood boards and finished visuals. What sets Midjourney apart is its distinctive aesthetic. Even short prompts tend to produce polished, painterly or photographic images with strong composition and lighting. Parameters for aspect ratio, stylization and variation give fine control, and style and image references help keep a consistent look across a series. The trade-off is that it is a paid service and works best once you learn its prompt conventions.

Midjourney の主な機能

• Text to image

  Generates a set of images from a written prompt in a few seconds to a minute.

• Variations and upscaling

  Lets you branch from any result with subtle or strong variations and upscale the one you like.

• Style and image references

  Uses reference images to match a look, a character or a composition across generations.

• Image editor

  Supports repainting selected regions and extending the canvas of an existing image.

• Prompt parameters

  Offers controls for aspect ratio, stylization, chaos and other settings directly in the prompt.

• Image animation

  Can turn a still image into a short animated video clip.

Midjourney の使い方

1. 01Sign in at midjourney.com and choose a subscription plan.
2. 02Type a prompt describing the subject, style and mood in the Create page.
3. 03Add parameters such as aspect ratio or stylization to shape the result.
4. 04Pick the best of the generated images and create variations or upscale it.
5. 05Download the final image or refine it further in the editor.

Midjourney のユースケース

• Concept art and mood boards

  Explore characters, environments and visual directions before committing to final artwork.

• Marketing visuals

  Create campaign imagery, social posts and blog headers in a consistent style.

• Book and album covers

  Draft cover artwork ideas quickly and iterate on composition and color.

• Product and interior ideas

  Visualize product concepts or room designs to discuss with clients or teams.

Midjourney のメリットとデメリット

Midjourney に関するよくある質問