Komprimierung ins JPG Format, reduziert dpi Werte.

Ich habe ein Problem mit Photoshop CS2. Mit dem EPSON Scanner V700 habe ich Negative in einer Qualität von 4600 x 4600 pix und 400dpi eingelesen.
Nach einer Bearbeitung und Abspeicherung im *.tif oder *.psd Format möchte ich die Bilder zu einer Buchveröffentlichung mit E-Mail weiterleiten.
Im Menuepunkt Datei/speichern unter, findet sich keine Möglichkeit für's komprimieren ins JPG Format.
Über den Menuepunkt Datei/für Web speichern, erscheint folgende Fehlermeldung:"Das Modul für Web speichern wurde nicht für Bilder dieser Grösse konzipiert.Es kann deshalb zu Speicherüberlastung kommen, möchten sie fortfahren?"
Führt man die Aktion trotzdem durch, wird das Bild von 400dpi auf 96dpi reduziert, obwohl ich keine Pixelverminderung des Bildes und mit kleinster komprimierungsrate gearbeitet habe. Wie soll das funktionieren, da stimmt doch etwas nicht.
In meinem alten Bildbearbeitungsprogram "Paint Shop Pro X" bleiben die dpi Werte nach einer Umwandlung von *.tif ins *.jpg Format gleich (400dpi). Was läuft bei Photoshop falsch?
Ich bitte um Hilfe.
Mit freundlichen Grüssen.

Hallo HaPe,
dass Photoshop nicht die Möglichkeit anbietet, als JPG zu speichern, liegt wahrscheinlich daran, dass der aktuelle Bildmodus nicht geeignet ist. Schau doch mal nach unter Bild / Modus, ob die Datei vielleicht als 16-Bit-Bild oder einem anderen Modus angelegt ist. Dies wird von m. W. JPG nicht unterstützt.
Ähnlich wird es sich mit dem Modul "für Web speichern" verhalten, dass nämlich PS eine restriktive Größenbegrenzung in Bezug auf "WEB-Tauglichkeit" durchführt.
Hoffe, dir nützliche Anhaltspunkte gegeben zu haben
Gruß, Bernhard

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