What this article covers:
The difference between BananaFX 2.0 and BananaFX 3.0, including which aspect ratios each version supports
Which Snappic plans include BananaFX, where it's supported, and how AI credits are priced
How to set up the BananaFX filter and add it to a template, including using multiple filters on one template
Troubleshooting common BananaFX issues
Before You Start:
AI-FX must be enabled on your event before you can add a BananaFX filter.
Processing takes between 30 seconds to 4 minutes on average. There is no guaranteed processing time and relies on your wifi connection.
AI rendering depends on external cloud processing. Occasional delays may occur due to third-party server performance.
AI-FX images are shared with guests via email or SMS once rendering is complete. AirDrop sends only the original image.
Virtual Booth does not support AI-FX.
Multiple frame templates are not supported.
AI may produce unexpected results including changes to facial features, gender, or skin tone. This is normal and cannot be controlled.
Prompt quality directly affects output quality. Detailed, structured prompts produce more consistent results.
Always test your filter before event day.
Table of Contents:
How BananaFX Works
BananaFX is a custom prompt AI Effect. You write your own prompt to control what the AI generates, instead of choosing from a fixed set of styles.
BananaFX is available in two versions: BananaFX 2.0 and BananaFX 3.0. Both let you enter a custom prompt, choose a pose, and set an aspect ratio — the difference is the underlying AI model and which aspect ratios each version supports.
| BananaFX 2.0 | BananaFX 3.0 |
AI model | Nano Banana Pro | Nano Banana 2 |
Prompt adherence | Extremely good prompt adherence. Handles text exceptionally well. | Strong prompt adherence. Handles text well. |
Group photos | Works with groups. Best results with 1–3 people. | Works with groups. Best results with 1–3 people. |
Output styles | Works for real and styled outputs. | Works for real and styled outputs. |
Standard aspect ratios | 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9 | 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9 |
Panorama aspect ratios | Not available | 1:4, 4:1, 1:8, 8:1 |
⚠️ Important: The aspect ratio you select must match your template frame orientation. If it doesn't, the AI output will be cropped or stretched.
BananaFX Plan Availability
BananaFX is included on some Snappic plans and not on others. Check the table below to confirm availability for your plan.
Plan | BananaFX Available |
Starter (Photo Booth) | ✗ Not available |
Business (Photo Booth) | ✓ Included |
Premium (Photo Booth) | ✓ Included |
Scale (Photo Booth) | ✓ Included |
Pro (Photography) | ✗ Not available |
Agency (Photography) | ✓ Included |
AI Credits
BananaFX renders use AI credits. Credits are priced at $0.10 per credit — for example, 200 credits costs $20, and 1,000 credits costs $100.
The number of credits a specific BananaFX render costs is shown in the Cost to Run panel before you save your configuration. Enabling Enhance Face Likeness adds 1 credit to that cost.
To top up credits, go to the Account tab in your Snappic dashboard and select Top Up.
How to Create a BananaFX Filter
Go to the Features tab in your event dashboard.
Select AI Experience and click Save Changes. You should be automatically directed to set up your AI Experience. If not, go to AI Templates on your dashboard.
Click Add AI Filter to open the AI Filters Gallery.
Select the Custom tab.
Select BananaFX 2.0 or BananaFX 3.0. Click Close.
6. Click Edit on the filter to open the AI Effect Options window.
7. Enter a Name for your filter, or keep the default name.
8. Enter your prompt in the Prompt field.
💡 Add Custom Text: To do this, first set up surveys by going to Event Options and enable Surveys. Then in the AI Edits section, use Insert field to add a dynamic value, like the guest's first name, into your prompt. The option you added to your survey will appear here. Use Manage Mappings to control how your survey fields map to those values.
9. (Optional) Click Enhance Prompt to refine your prompt wording, or Expand to edit it in a larger window.
10. (Optional) Set Enhance Face Likeness to Yes.
⚠️ Important: Enhance Face Likeness only works with real, photographic images. It does not work with stylized images, like cartoon styles. Turning it on adds 1 credit to the cost of running the filter.
11. (Optional) Upload up to four images in Reference Image.
12. Select a Pose: Original Pose or Random.
13. Select an Aspect Ratio that matches your template frame orientation.
⚠️ Important: The aspect ratio you select must match your template frame orientation. If it doesn't, the AI output will be cropped or stretched.
14. Click Save config to save your settings, or Save & go to Test to move to the Test & Preview tab.
How to Add BananaFX to a Template
Select a template from the Template Library, or click + Create New Template.
Click AI Filters under your template to assign your BananaFX filter.
Click Preview to set the template preview image guests see at the booth. (Tip: Use your test image as the preview)
You can attach one or multiple BananaFX filters to one template.
💡 Tip: Always run a test render in Test & Preview to confirm your prompt, pose, and aspect ratio combination before using it at a live event. Small prompt wording changes can produce noticeably different outputs.
Custom Prompt Filter Comparison
Snappic's Custom Prompt filters are each powered by a different AI model, with different strengths and rendering speeds.
Snappic Custom Prompt Filter | Model | Key Strengths | Best For | Speed |
BananaFX 2.0 | Nano Banana Pro | Studio-quality output, accurate text-in-image rendering, consistent identity across subjects | Complex compositions, branded content, the highest-quality single renders | Fast — about 20–30 seconds, depending on wifi |
BananaFX 3.0 | Nano Banana 2 | Fast generation, supports multiple reference images, strong prompt understanding | Quick turnarounds, group photos, high-volume events | Fast — about 20–30 seconds, depending on wifi |
PersonaFX 2.0 | GPT Image 2 | State-of-the-art photorealism, near-perfect text rendering, strong instruction-following | Photorealistic single-subject portraits, text-heavy outputs | Slower — up to 60 seconds |
BananaFX prioritizes speed on both versions. PersonaFX prioritizes photorealism, which takes longer to render.
Prompting Tips for BananaFX 2.0 (Nano Banana Pro)
Nano Banana Pro performs best with clear, well-structured prompts that describe exactly what you want to create. The more specific your instructions, the more accurately the model can interpret your vision.
For the best results:
Describe your prompt in a logical order, starting with the main concept, then the subject, clothing, pose, environment, lighting, and style.
Clearly explain what should change and what should remain the same, especially when editing existing photos.
Use detailed descriptions for important elements rather than broad or vague terms.
If your image contains text, provide the exact wording and, if relevant, where it should appear.
Break complex ideas into clear sentences instead of one long paragraph.
If the first result isn’t quite right, adding or refining specific details can often produce a much better outcome.
Nano Banana Pro excels at following detailed creative briefs, so don’t be afraid to provide clear, descriptive instructions.
Prompting Tips for BananaFX 3.0 (Nano Banana 2)
Nano Banana 2 is designed to quickly generate high-quality images and responds best to clear, direct prompts with enough detail to establish the scene.
For the best results:
Start with the main idea, then describe the subject, environment, style, lighting, and any important details.
Clearly specify what should stay the same and what should change when transforming an existing image.
Use descriptive language rather than short keyword lists.
Include the exact text you want if your image requires signs, posters, magazine covers, or other typography.
If your result isn’t exactly what you imagined, make small changes to your prompt instead of rewriting it completely.
Nano Banana 2 is excellent at interpreting creative ideas, and even small prompt refinements can have a noticeable impact on the final image.
Best Practices
Use well-lit, high-quality guest photos with clean backgrounds. Overexposed images produce poor outputs.
Ask guests to face the camera directly with a natural, upright pose. Avoid partially obscured subjects.
Write detailed, structured prompts — specific descriptions produce more consistent results. Small wording changes can noticeably affect the output.
Use surveys to personalise outputs by inserting guest names, numbers, or preferences directly into the prompt. To set up surveys, go to your event's Event Options and enable Surveys.
Always run a test render before your event to confirm your prompt, pose, and aspect ratio combination.
Troubleshooting
Why isn't BananaFX available on my Virtual Booth event?
Cause: BananaFX (AI-FX) does not work on Virtual Booth events.
Fix: Use a different booth type that supports AI-FX.
Why can't I attach BananaFX to my template?
Cause: BananaFX does not support templates that use multiple frames.
Fix: Use a single-frame template.
Why does my BananaFX output show a different face, gender, or skin tone than my guest?
Cause: The AI model can change facial features, gender, or skin tone in its output. This is normal and cannot be controlled.
Fix: For real, photographic images, set Enhance Face Likeness to Yes. This does not guarantee an exact match, since some variation is a normal characteristic of the AI model.
Why is my BananaFX output inconsistent between guests?
Cause: Prompt quality directly affects output quality. Vague or unstructured prompts produce less consistent results.
Fix: Write a detailed, structured prompt, and test it in Test & Preview before your event.
Why did a small change to my prompt produce a completely different result?
Cause: BananaFX output is sensitive to prompt wording. Small wording changes can produce noticeably different outputs.
Fix: Test each version of your prompt in Test & Preview before using it at a live event.
Why is rendering taking a long time?
Cause: BananaFX rendering is handled by an external cloud server. Snappic does not control external rendering speed.
Fix: If delays are consistent, contact support.
Why isn't Enhance Face Likeness improving my output?
Cause: Enhance Face Likeness only works with real, photographic images. It does not work with stylized images, like cartoon styles.
Fix: Only enable Enhance Face Likeness when your prompts are real, not stylized images.
Why did my guest get the original photo instead of the AI-generated one?
Cause: Sharing via AirDrop sends only the original image, not the AI-generated version.
Fix: Share the AI-generated image by email or SMS instead of AirDrop.
Why isn't my guest receiving their AI-generated image?
Cause: AI-FX images are only shared when the session is synced with the Snappic app.
Fix: Make sure the session is synced with the Snappic app before sharing.
Need Help?
Visit the Snappic Help Center or chat directly from your dashboard for live support.