Getting the Right Selfies for Great Swaps
Reswap learns your appearance from the selfies you upload during onboarding. Those photos are the reference the generative model uses every time you swap into a new scene. Good reference photos lead to good swaps. Bad reference photos lead to bad swaps, regardless of which source photo you pick afterward.
This guide covers what makes a useful reference selfie, what to avoid, and how many to take. It is specifically tuned for Reswap's generative pipeline, but most of the advice applies to any AI photo generation tool that accepts identity references.
Why Reference Selfies Matter
A generative model conditioned on a person's identity has to learn that identity from examples. If the examples are inconsistent, blurry, or heavily filtered, the model has to guess at what you actually look like. The result is swaps that resemble you vaguely rather than cleanly.
Think of reference selfies the way a sketch artist would think of photos they are drawing from. The better the references, the less the artist has to invent.
Face Photo Tips
Lighting Matters Most
Light is the single biggest variable. Get it right and everything else is easier.
•Use natural light. Face a window during the day. Indirect daylight produces soft, even coverage without harsh shadows.
•Avoid direct sun. Midday sun creates harsh shadows under the brow and nose. Your features disappear.
•Skip the flash. On-camera flash flattens features and creates unnatural color casts that confuse the model.
•Overcast days are ideal. Clouds act like a giant softbox. If the weather cooperates, take a few photos outside on a bright but cloudy day.
•Avoid mixed lighting. Warm indoor light mixed with cool window light creates odd color tones the model has to compensate for.
Camera Position
•Eye level. Not above, not below. Looking up into the camera hides your jawline; looking down distorts your forehead.
•Two to three feet away. Closer than that causes lens distortion, particularly on a phone's front camera. Further than that loses resolution unless you zoom in.
•Centered framing. Your face in the middle of the frame, with a little headroom above and a little below the chin.
•Steady. Use both hands or prop the phone against something. Motion blur is a common issue with held phones, especially indoors.
Expression and Angle
•Neutral or light smile. Extreme expressions are not useful as a reference. A calm, natural face works best.
•At least one straight-on photo. Face the camera directly. This is the most important single shot.
•Add slight angles. Include one photo turned slightly left and one slightly right, maybe 15 to 20 degrees. These help the model handle angles in source photos.
•Relaxed face. Tension shows in the jaw and forehead. Breathe out before the shot.
What to Avoid
•Sunglasses or regular glasses. Unless you wear glasses in essentially every photo, leave them off for references. Lenses obscure your eyes.
•Hats. Forehead and hairline matter. Hats cover both.
•Heavy makeup. Makeup that significantly changes your features gives the model a moving target.
•Filters or beauty modes. The iPhone's front camera sometimes applies smoothing by default. Turn that off in Settings → Camera if possible.
•Blurry or pixelated photos. If you had to zoom in heavily or the light was low, retake the photo.
•Extreme expressions. Wide laughs, closed eyes, or exaggerated faces.
Body Photo Tips
Full body photos help Reswap handle swaps where your whole figure is visible, which is most travel, fashion, and lifestyle scenes.
Clothing Choices
•Fitted clothing. Loose or baggy clothes hide your shape, and the model has to guess.
•Solid colors. Busy patterns confuse segmentation.
•Neutral styles. Avoid prominent logos, slogans, and unusual fashion choices.
•Variety helps. One or two different outfits give the model more options.
Posture and Pose
•Stand naturally. Arms slightly away from your sides. Not soldier stiff, not slouched.
•Good posture. Straight back, relaxed shoulders.
•Full body in frame. Head to feet visible, not cut off at the ankles or forehead.
•Some space. Do not crop tightly. The model needs margin.
Background and Setting
•Plain background. A blank wall is ideal. A cluttered room is not.
•Contrast with your clothing. If you are wearing dark clothes, a light wall helps separation.
•Clean environment. Move laundry, chairs, and boxes out of frame.
•Consistent lighting. Match the conditions of your face photos as closely as you can.
How Many Photos Do You Need
The sweet spot is small. More photos are not always better, especially if they introduce inconsistency.
•Face photos: 3 to 5. One straight-on, one slight left, one slight right. Optionally one slightly tilted down for variety.
•Body photos: 2 to 3. Ideally in one or two outfits.
•Total: 5 to 8 reference photos is plenty.
Three perfect photos outperform ten mediocre ones. If you only have time for three, make them the three face photos described above.
Lighting Examples That Work
•Standing two or three feet in front of a large window on an overcast day.
•Outdoors under a covered porch or awning at midday.
•In a room with soft overhead light plus a desk lamp bouncing off a wall.
•During golden hour, back to the sun, facing a shaded surface.
Lighting Examples That Do Not Work
•Under direct overhead fluorescent light.
•Bathroom mirror with a single sconce to one side.
•Car interior with one side in sun and the other in shade.
•Dim bedroom with a phone flash.
•Any scene with your face half in shadow and half in sun.
Updating Your Photos
Your reference photos do not have to last forever. Update them when your appearance meaningfully changes.
•New hairstyle or color. Significant changes deserve fresh references.
•Seasonal shifts. A deep summer tan and a winter pale can look different enough that swaps feel off.
•Weight changes. Body photos in particular need updates when your shape changes.
•Style updates. If you moved from clean-shaven to beard, or from glasses to no glasses, new references help.
A six to twelve month refresh is reasonable even if nothing major changed.
Quick Checklist
Before uploading each photo:
Face clearly visible and in focus
Even, natural lighting
No filters, beauty mode, or heavy edits
Neutral background
Good resolution, no pixelation
Current appearance, not from five years ago
No sunglasses, hats, or heavy makeup
Neutral expression or light smile
Straight posture for body photos
If any answer is no, retake the photo.
Common Mistakes
•Uploading bathroom mirror selfies. The light is wrong, the mirror is smudged, and the phone is often in frame.
•Using the same pose and expression in every photo. Variety within calm ranges helps the model generalize.
•Pulling from old camera roll photos that no longer match. The model will render the you from two years ago.
•Keeping sunglasses on for "just one" of the references. Even one obscured photo pulls the model toward a lower-information reference.
•Photographing yourself against a window so you are backlit and dark. Face the window instead.
Using the iPhone Camera Well
A few iPhone-specific tips that help:
•Turn off mirror selfies. Settings → Camera → Mirror Front Camera. Off. Reversed photos can confuse the model.
•Turn off Smart HDR only if your photos look over-processed. It usually helps, but check the output.
•Skip portrait mode. The artificial background blur is unhelpful as a reference.
•Use the back camera with a timer. If you can prop your phone up, the back camera produces much higher quality photos than the front camera. Use the three-second timer.
What the Model Does with Your Photos
When you upload references, Reswap validates on your device that a valid face is present and that the photos show the same person. That validation is local. The reference identity the model uses for generation is created from those photos and associated with your account. You can delete the references at any time.
Your reference photos are not published, shared with other users, or used for training other people's swaps.
FAQ
Can I upload just one selfie? You can, but results will be worse. The model benefits from a small set of angles.
Do I need a professional camera? No. A phone camera in good light outperforms a DSLR in bad light.
Can I use photos of me from a few years ago? Technically yes, but the output will match the you from then, not the you from now.
What if my appearance changes frequently? Update your references as needed. Reswap lets you refresh the reference set.
Do selfies need to match the outfits in source photos? No. The model generates new clothing based on the source scene. Your reference clothing does not have to match anything.
Start Swapping
With clean reference selfies uploaded, you are ready to swap. Pick any photo from your camera roll, tap to swap, and let the model do the rest.
Reswap is free to start on iOS 18 or later. Three swaps per month at no cost. Reswap Plus from $4.99 per week for more swaps. If the first results are not what you hoped, come back to this page and check your references against the checklist. The difference between a passable reference set and a clean one is the difference between swaps that feel close to you and swaps that feel like you.