Samsung WB750 new purchase

although landscape/2MB resolution not allowing to check image quality.

I'm new to this web site/forums/albums so I imported the pictures to my album using default settings. I'll look for options next time around. But here's what I know about sizes:

OnMyMac 4096 x 3072 = 12.6MB 72ppi
Album-sm 480 x 360 = .17MB 96ppi
Album-md 900 x 675 = .61MB 96ppi
Album-lg 1600 x 1200 = 1.92MB 96ppi

You probably know that you can click on the pictures to make them larger, twice.
I uploaded the 12.6MB picture to the album; looks like it got downsized.
I downloaded each size picture back to my Mac to get the sizes shown above.

I don't see a 2MB number, but perhaps you are referring to the largest size at 1.92MB. I'd be delighted to know how to get full 12MB pictures into the album.

Also exif info in photos lacks of original resolution and firmware verison, can you put it?

X resolution 72.0 ppi (pixel per inch)
Y resolution 72.0 ppi (pixel per inch)
Software 110163

I couldn't find anything else even close in the EXIF info.

Were those hand held or on a tripod?

Hand held.

It is a worry that you consider it slow in response time compared to
the Sony HX5V when dpr criticised the Sony for being unresponsive.

I never said anything about response time; maybe it was in the review.

I read somewhere that the dimensions in the specifications are slightly misleading because the quoted thickness does not include the protrusion of the lens surround. Will it fit in a shirt pocket? (that's my criterion for portability).

Here are the numbers (all in mm):

H
Samsung 59.4
My caliper 59.1

W
Samsung 105.3
My caliper 105.3

D
Samsung 24.9 !!
My caliper 33.6

I measured the body (and lens surround) but not the protrusions (buttons etc).
It won't fit in my shirt pocket; I use a camera case.
YMMV