レイヤーカンプで書き出すと元画像よりばかでかい容量の画像になる

[naga]

どなたか分かる方に質問です。

レイヤーカンプで画像を書き出すと

物凄くばかでかい容量サイズの圧縮画像が出来上がります。

例えば、画質３のサイズ640pix×400pixのJPG画像でも

６MGで書き出されたりします。

web保存で一枚づつ書き出すと60kbくらいの画像です。

数が多い時はレイヤーカンプがとても便利なので、

どなたか解決法をご存知であれば教えて頂けないでしょうか。

[ゲスト]

Hi

What application as you using, you mention layer comps so I would assume it's Photoshop

[Abambo]

Discussion successfully moved from Adobe Creative Cloud to Photoshopコミュニティフォーラム (Japan)

[Abambo]

The "problem" lies in the compression. JPEG is a very good compression model for photos, but it is destructive. If you save the file as a Photoshop file, you use a nondestructive compression which is not as good in compression ration but does not alter the image each time you save it.

And then, when adding layers, each layer you add is like a picture on it's own (with a mask, which is also a picture on its own). With a lot of layers, images tend to grow quite big. There is no "solution" to that.

You could use, however, the TIFF format with ZIP compression. That format keeps the layers (if you want) and uses one of the best nondestructive compression algorithms. The drawback is that saving takes more time.