reload textures
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Okay so in poser when you change a texture without changing the file name (I.E. You moved the letter G to the left on the chest of 'ChestG.jpg' then re-save it as the same name 'ChestG.jpg' you can just hit reload textures. I am assuming Daz Studio has something like this (I would hope) but for the life of me I can't locate it. So, right now when it gets stuck like that I have to save open a new file then reload the one I was working on...which works okay...just kind of a pain.
Comments
It should be Ctrl+I, or Refresh Images. that is Control plus capital Eye.
You will find it in the dropdown menu for the Surfaces pane.
In the Surfaces(Color) pane, click on the menu icon in the upper corner and select "Refresh Images" or check "Automatically Refresh Images".
(Note that there either is or was a bug whereby this occasionally jams up; If your diffuse image icon suddenly changes from what it was to the DAZ Logo, that's your cue to save&exit; and restart before it starts working and seeing your changes normally again.)
Note that this re-saving of a .jpg image is Not A Good Idea™. The way jpg works to get these tremendous file size compressions is to throw away fine detail that usually is not visible — the format was originally designed to squeeze as many scanned-in actual paper photographs on a base single-sided CD as possible. (Yes, no digital pics or DVDs, it's that old.) It's not really suitable for editing and re-saving textures for 3D models, since this throwing away detail happens every time you save; if you do it too often, you end up with blurring and hazy speckling all over your textures. If you must work on a .jpg image, the first thing you should do is re-save it in your paint program's native format (whichever one you use, Photoshop, PaintShopPro, GIMP, etc.) and don't re-save to .jpg until after you've finished changing the image.
Another point, re-saving a file with the same name is Very Not A Good Idea™ — you lose the original texture file, and it's much too easy to accidentally overwrite a file you didn't mean to. Get into the habit of using a saved file under a different name as your working file, then change the specified texture file name in D|S or Poser.