Technical Specifications of mj-turbo-custom-zoom
| Specification | Details |
|---|---|
| Model ID | mj-turbo-custom-zoom |
| Model family | Midjourney-style image editing / zoom-out workflow model, exposed through CometAPI using the platform identifier mj-turbo-custom-zoom |
| Primary capability | Expands an existing Midjourney-generated image outward using a custom zoom factor while optionally changing prompt guidance during the zoom step. |
| Input type | Image-to-image style zoom/outpaint request, typically paired with the source image or prior Midjourney job context plus updated prompt instructions |
| Output type | Newly generated image variation with a wider field of view that preserves the original composition near the center while synthesizing new surrounding content. |
| Zoom control | Custom Zoom commonly supports user-defined zoom values between 1.0 and 2.0. |
| Prompt editing during zoom | Supported conceptually: users can modify the prompt while zooming so the newly revealed area follows updated scene instructions. |
| Aspect-ratio control | Custom Zoom workflows can also be combined with aspect-ratio changes to widen or reframe the scene. |
| Best-fit use cases | Outpainting, cinematic reframing, scene expansion, iterative storytelling, infinite-zoom sequences, and recovery from overly tight crops |
| Important limitation | Midjourney’s Zoom Out / Custom Zoom feature has been described as working on Midjourney-generated images rather than arbitrary external images. |
What is mj-turbo-custom-zoom?
mj-turbo-custom-zoom is CometAPI’s platform identifier for a Midjourney-style custom zoom workflow: instead of generating a brand-new image from scratch, it takes an already generated composition and expands the canvas outward, synthesizing new visual context around the original image. This makes it especially useful when you want to “pull back the camera,” reveal more environment, or continue a visual narrative without losing the core subject.
The underlying behavior aligns with Midjourney’s Custom Zoom concept, which lets the user specify a zoom amount and optionally revise the prompt so the newly created outer regions follow fresh instructions. In practice, this is closer to guided outpainting than standard upscaling: the center image is preserved as the anchor, while the model invents coherent surrounding details such as background, architecture, landscape, or atmosphere.
Because this workflow is oriented around extending existing generations, mj-turbo-custom-zoom is a strong fit for creators building cinematic reveals, poster reframes, social-media aspect-ratio adjustments, concept-art environment expansions, and chained “infinite zoom” sequences. Community and tutorial sources also consistently describe Custom Zoom as useful for fixing compositions that feel too tightly cropped.
Main features of mj-turbo-custom-zoom
- Custom zoom-out expansion: Extends an image beyond its original borders, generating plausible new content around the existing frame instead of replacing the whole composition.
- User-defined zoom factor: Supports fine-grained zoom control rather than only preset expansion levels; commonly documented values range from 1.0 to 2.0.
- Prompt-aware scene continuation: Lets you alter the prompt during the zoom step so the newly exposed space can introduce extra environmental detail, narrative elements, or style changes.
- Composition preservation: Keeps the original subject and framing center as the visual anchor while expanding the surrounding world, making it useful for iterative refinement.
- Aspect-ratio reframing: Can be used to widen or reshape the image composition while zooming, which helps adapt creative assets for banners, thumbnails, and cinematic layouts.
- Iterative workflow support: Particularly effective for repeated zoom chains, including “infinite zoom” style creative sequences built from multiple outward expansions.
- Crop recovery and outpainting: Helpful when an earlier generation is visually strong but framed too tightly; the model can add believable surrounding context without starting over.
- Midjourney-style generation semantics: Best understood as a specialized image editing / continuation operation within a Midjourney-like workflow, rather than a general-purpose photo zoom algorithm.
How to access and integrate mj-turbo-custom-zoom
Step 1: Sign Up for API Key
Sign up on CometAPI and create an API key from the dashboard. Store the key securely and send it in the Authorization header as a Bearer token for every request.
Step 2: Send Requests to mj-turbo-custom-zoom API
Use CometAPI's Midjourney-compatible endpoint at POST /mj/submit/action.
curl https://api.cometapi.com/mj/submit/action \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $COMETAPI_API_KEY" \
-d '{
"prompt": "a futuristic cityscape at sunset --v 6.1",
"botType": "MID_JOURNEY",
"accountFilter": {
"modes": ["TURBO"]
}
}'
Step 3: Retrieve and Verify Results
The API returns a task object with a task ID. Poll GET /mj/task/{task_id}/fetch to check generation status and retrieve the output image URL when the task reaches a terminal state.