Crop
In the app, the beside the Crop block says:
Drag the corners on the photo to crop it.
Drag the corners on the photo to crop it; the panel holds the ratio, the orientation, the straightening, the quarter turns and mirrors, the white balance window, the size kept, and the green key that leaves the mode. Framing never travels with a paste of settings: it has its own two keys, in this title row.
Aspect ratio
Whether the crop frame keeps a fixed shape. Free lets you drag any edge freely; the five ratios lock the frame's shape and refit it inside the image.
More about Aspect ratio
In the Frame panel, which the toolbar opens and closes with one key rather than a tab. Inside the Crop block.
The block’s own opens Frame › Crop in this manual.
- Carried by a preset
- Never: it depends on this frame's content: pasting one destroys hand-made cropping.
- The choice is remembered for the session, with its Portrait setting, and handed to the next photo you open.
- The angle, quarter turns, mirrors and frame itself are not remembered: each photo keeps its own from its sidecar.
- Framing has its own Copy framing and Paste framing keys, carrying the whole geometry, ratio included, to another photo.
- Lock a ratio once for a roll to be printed at one size; every frame opened in that session proposes it.
- Choose Free when cropping into a slanted corner after straightening, since a locked frame refits inside the rotated image.
Portrait
Turns the locked crop ratio upright, swapping width and height, and refits the frame in that orientation. Greyed on Free, which has no ratio, and on 1:1, where turning a square changes nothing.
More about Portrait
In the Frame panel, which the toolbar opens and closes with one key rather than a tab. Inside the Crop block.
The block’s own opens Frame › Crop in this manual.
- Carried by a preset
- Never: it depends on this frame's content: pasting one destroys hand-made cropping.
- The setting belongs to the ratio, not the photo: it is remembered for the session and handed to the next photo's crop mode.
- A quarter turn in the row below rotates the whole picture; Portrait only turns the frame cut from it.
- Use it for a vertical picture on a horizontal scan: lock the ratio, then switch Portrait on.
- Not to turn the scan itself: a strip scanned sideways wants the rotate key instead.
Straighten
A fine rotation, up to eight degrees either way, for a horizon or holder that was not quite square. Unlike the lossless quarter turn, this one resamples the picture.
More about Straighten
In the Frame panel, which the toolbar opens and closes with one key rather than a tab. Inside the Crop block.
The block’s own opens Frame › Crop in this manual.
- Range
- -8.00° to +8.00° as shown (-8 to 8 stored)
- At rest
- +0.00°
- Double-click returns
- +0.00°
- Right end
- +8.00° shown
- Carried by a preset
- Never: it depends on this frame's content: pasting one destroys hand-made cropping.
- The whole photo stays visible while turning: only the crop frame is kept inside the rotated image, so no empty corner exports.
- If the frame still fits after turning, only its position is nudged; if not, both sides shrink by the same factor, keeping a locked ratio.
- That shrinking is not undone by turning back; the block's reset is the way back to the full frame.
- Straightening travels with Copy framing and Paste framing, useful for straightening one frame of a strip and copying it to the rest.
- Not for a sideways scan: that is the lossless quarter turn key; eight degrees of resampling cost more.
Rotation and mirror
Three keys fix a sideways scan or one shot through the base: a quarter turn clockwise, and a plate of two mirrors, left for right and top for bottom.
More about Rotation and mirror
In the Frame panel, which the toolbar opens and closes with one key rather than a tab. Inside the Crop block.
The block’s own opens Frame › Crop in this manual.
- Carried by a preset
- Never: it depends on this frame's content: pasting one destroys hand-made cropping.
- All three are exact, a pixel permutation rather than a resampling, so they cost the picture nothing.
- The second mirror key wears the first one's glyph turned a quarter, since there is no vertical twin icon.
- A quarter turn reapplies a locked ratio in the new orientation; the "Kept" readout shows the frame's size in pixels afterward.
- For a strip scanned sideways, rotate once or three times, then repeat on the rest of the strip with Copy framing and Paste framing.
- Mirror left for right on a frame scanned emulsion-up; use the second mirror key once per roll on a flatbed that flips top for bottom.
How every slider works
How every slider in the app works
- Drag anywhere on the row: the value moves by how far your hand travelled, it does not jump to where you clicked. That is what makes a fine adjustment possible without aiming.
- Hold ⌥ while dragging and the travel is divided by five.
- Scroll sideways on the trackpad over a slider to nudge it.
- Double-click to return to the base value, which is not always the resting one: on Sharpening amount it is zero, the one gesture that switches the stage off.
- Keyboard: once a slider has the focus, the arrow keys move it by a hundredth of its travel.
- A slider whose track is anchored puts one named value at the middle of its travel; the two halves are linear but not equal.
- A bipolar slider shows no fill: its whole track is the gradient between its two ends, because it is a balance between two hues, not a quantity.