Photoshop PSD file suddenly ½ size

Started Jan 15, 2014 | Discussions thread
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Photoshop PSD file suddenly ½ size
Jan 15, 2014

I am a new user with Photoshop

When I load a jpg picture with 5184 x 3456 pixels and save this image as a PSD file it is reduced to ½ the size than it was before.

For the first two weeks I worked with jpg's in this resolution my PSD file would end up around 100 Mb.

Since yesterday they are only around 50 Mb.

When I load the PSD file (around 50 Mb) it looks okay.

As far as I know I didn't change any settings regarding "save file".

What is normal size? No need to worry?

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Canon EOS Rebel SL1 Canon EF-S 18-55mm f/3.5-5.6 IS STM
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