White Layer

<p>Hi,<br>

Here is the psd file that i am working with, <a href="https://www.dropbox.com/s/amy5c3vp1tfvgw7/1229150778.psd?dl=0" target="_blank">https://www.dropbox.com/s/amy5c3vp1tfvgw7/1229150778.psd?dl=0</a><br>

My settings in photoshop is to have no grid for transparency, i exported my image to a jpeg and i see that the jpeg has more a dark shadow, see screenshot below</p>

<p ><img src="http://2.static.img-dpreview.com/files/p/TS560x560~forums/57003297/6b3833f89fe34fa9be087c2d89d2de68" alt="" width="560" height="299" data-dpr-src-type="f" data-dpr-file-id="6b3833f89fe34fa9be087c2d89d2de68" data-dpr-original-height="1021" data-dpr-original-width="1910" data-dpr-post-id="57003297" data-dpr-large-image-url="http://2.static.img-dpreview.com/files/p/TS940x940~forums/57003297/6b3833f89fe34fa9be087c2d89d2de68" data-dpr-xlarge-image-url="http://2.static.img-dpreview.com/files/p/TS1600x1600~forums/57003297/6b3833f89fe34fa9be087c2d89d2de68" data-dpr-full-image-url="http://4.static.img-dpreview.com/files/p/E~forums/57003297/6b3833f89fe34fa9be087c2d89d2de68" data-dpr-clickthrough-url="http://4.static.img-dpreview.com/files/p/E~forums/57003297/6b3833f89fe34fa9be087c2d89d2de68" data-dpr-small-image-width="560" data-dpr-small-image-height="299" data-dpr-large-image-width="940" data-dpr-large-image-height="502" data-dpr-xlarge-image-width="1600" data-dpr-xlarge-image-height="855" data-dpr-full-image-width="1910" data-dpr-full-image-height="1021" /></p>

<p >View: <a href="http://4.static.img-dpreview.com/files/p/E~forums/57003297/6b3833f89fe34fa9be087c2d89d2de68" target="_blank">original size</a><br>

Then i tried to add a white layer for the background i saw that the shadow becomes more dark,<br>

I wonder why....<br>

whats a difference, if my transparency looks white or if i have a white layer..... why does it look difference??<br>

Try to download my file and hide/unhide the bottom white layer and you will see how the shadow becomes darker and lighter......<br>

Thanks for your help in advance</p>

<p>Hi,<br /> I have tried what you say. I turn on and of the visibility of the bottom layer (named "white BR"). I do not get the result you describe. Actually it becomes more dark when the white background is hidden, because the shadow is transparent and the darker background will mix with the shadow. There is however more contrast between the shadow and background when the white layer is visible. Maybe this is what you perceive as being darker?<br>

Have a look at this page. Maybe it becomes clearer: https://whyevolutionistrue.wordpress.com/2011/01/08/do-we-perceive-reality-the-checker-shadow-illusion/<br /> <br /> Cheers,</p><div></div>

<p>OK. I must apologize. I overlooked that you "have no grid for transparency". This renders the transparency "color" look white. But it must not be confused with white color. Transparency is its own kind of color.<br>

When you then turn off the "white BR" layer, the checker board background in my above right image will still look white although it is transparency (this is a good reason to not turn of checker board). That part of the image is still transparent. This transparency will mix with the shadow and make it even more transparent than it already is (you might say that you mix a color with some "invisibility" stuff, so it gets more invisible). Since the transparency color is white (the "nothingness" below all layers in the layer pallet has become white), it will make more of this transparency ("nothingness") white shine through the shadow.<br>

At least that is my hypotheses. Don't confuse a white transparency with white color (I would say: never turn off the checker board in transparency).<br>

Cheers,</p>

<p>Okay, thanks a lot for your reply, i always like to have a white background so i can see how it will look in the final jpeg, <br>

anyway I am not going to change photoshop<br>

From Now on I will just make a white layer to see the accurate out put</p>

<p>I am not sure if this is a helpful comment but I found that when a layer carries the title "background layer' it stops you seeing a white layer below it because it insists that 'nothing' is white ... change its name and 'nothing' can become, or becomes, transparent ... hope you follow me :)<br>

One drawback is that when the layers are merged and a jpg made for posting the b/g becomes white again :( I think I tried to demonstrate this some years back here at PN without success.</p>