Size and weight are big decision factors when you are trying to find the ideal camera for your needs.
In this section, we are going to illustrate the Sony TX66 and Sony HX90V side-by-side from the front, back and top in their relative dimensions. Sony TX66 has external dimensions of 93 x 54 x 13 mm (3.66 x 2.13 x 0.51″) and weighs 109 g (0.24 lb / 3.84 oz) (including batteries). Sony HX90V has external dimensions of 102 x 58 x 36 mm (4.02 x 2.28 x 1.42″) and weighs 245 g (0.54 lb / 8.64 oz) (including batteries).
Below you can see the front-view size comparison of the Sony TX66 and the Sony HX90V. Sony TX66 is clearly the smaller of the two cameras. Its body is 9mm narrower, 4mm shorter and 23mm thinner than Sony HX90V.
Here is the back view size comparison of the Sony TX66 and Sony HX90V.
Now lets look at the top view comparison of Sony TX66 and Sony HX90V.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony TX66 is significantly lighter (136g ) than the Sony HX90V which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Sony Cyber-shot DSC-TX66 nor Sony Cyber-shot DSC-HX90V provides any type of weather sealing in their bodies, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Sony TX66's 3.30" LCD screen is slightly larger than Sony HX90V's 3 screen.