Opacity slider controls how much is visible of layer content. 100% is everything visible, 0% nothing visible, 50% you can see through.
It means how transperent the image is.
Opacity is the transparency of your layer that is featured. It is useful for safe editing in Photoshop, opacity is used to 'dim down' a certain object and is commonly used in masking to see layers behind the layer that uses opacity. Higher opacity will make the layer more opaque. Lower opacity will make the layer more transparent. Hope this helps :)
It not capacity it OPACITY. Opacity is the control of how visible the layer or action of the tool is i.e lowering the opacity of the brush makes the line drawn seem more transparent
The opacity determines how transparent a layer in Photoshop is. Setting the opacity at 0% will make the layer completely invisible, revealing any layers underneath it. Setting the opacity at 50% will make the layer half visible, making both the layer, and the layers under it equally visible. Setting the opacity to 100% will make the layer completely visible, anything under it will be completely covered. This can be useful when changing eye colors, as if the color you've changed the eye to looks too unrealistic, you can lower the opacity to allow the original eye color and detail to show through, which can make for a more realistic effect.
Opacity affects everything on layer including layer effects while Fill does not affect layer effects applied. For more details and explanation visit link from related links section below this answer,
Use the oval tool, then double click on the layer and set the "fill opacity" to 0 and add a stroke. Mark
To create mist in Photoshop, you can use the brush tool with a soft round brush and set the opacity to a low level. Then, paint over the areas where you want the mist to appear, adjusting the brush size and opacity as needed to achieve the desired effect. Additionally, you can use the blur tool to soften the edges of the mist for a more realistic look.
Select layer you want to make transparent, then in top right corner of Layers panel type 0 in text field next to Opacity, or click triangle on right side of Opacity to expand slider and drag it to the left till you see 0%. Every new blank layer created in Photoshop is also transparent (Layer > New > Layer...).
To replace an object in Photoshop, use the "Clone Stamp" or "Content-Aware Fill" tool to select the object you want to replace and then choose a new object to replace it with. Adjust the size and opacity of the tool as needed for a seamless replacement.
To achieve simple skin smoothing in Photoshop, use the "Blur" tool or the "Smudge" tool to soften skin imperfections. Adjust the opacity of the tool to control the level of smoothing. Be careful not to overdo it to maintain a natural look.
opacity
The basic code would be to set the opacity low then make use of ':hover', in CSS this is:.trans { opacity: 0.8; }.trans:hover { opacity : 1; }You can use test in your HTML code to test if it works.The following code is designed to work across all browsers:.trans{filter: alpha(opacity=80);-khtml-opacity:0.8;-moz-opacity:0.8;opacity:0.8;}.trans:hover{filter: alpha(opacity=100);-khtml-opacity:1;-moz-opacity:1;opacity:1;}