Screen zoom effect quality loose

Hello comunity !
Screen zoom effect is there any documentation ?
I'm using it and there are the result isn't rellay the best .

This is an image without screen zoom effect
Attachment 19402

This is an image applying the screen zoom effect
Attachment 19403

The two images are the same size , the camera width and height are setted at the same dimentions of the frame , i don't understand why when the zoom effect is applyed there is tha blury effect .
Is there any way to avoid the blury effect / quality loose ??

this is odd,
I get exactly the same quality with or without scale applied at 1.0

Attachment 19408

maybe you can try to uncheck "antialiasing when resizing"
from application properties - window

without / with antialiasing at scale 2.0:

Attachment 19410

this should force crisp pixel scaling, if this is what you need?

Is it for iOS or HTML5?

I've tested above on HTML5

Hello schrodinger thank you for the answer , unfortunately I didn't found any "antialising" option (i'm not really good on using CF2.5 i'm still learning) . My game is for windows . Anyway I solved by using the viewport object !