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 Panasonic ZS45 and Nikon P1000 side-by-side from the front, back and top in their relative dimensions. Panasonic ZS45 has external dimensions of 108 x 60 x 32 mm (4.25 x 2.36 x 1.26″) and weighs 249 g (0.55 lb / 8.78 oz) (including batteries). Nikon P1000 has external dimensions of 146 x 119 x 181 mm (5.75 x 4.69 x 7.13″) and weighs 1415 g (3.12 lb / 49.91 oz) (including batteries).
Below you can see the front-view size comparison of the Panasonic ZS45 and the Nikon P1000. Panasonic ZS45 is clearly the smaller of the two cameras. Its body is 38mm narrower, 59mm shorter and 149mm thinner than Nikon P1000.
Here is the back view size comparison of the Panasonic ZS45 and Nikon P1000.
Now lets look at the top view comparison of Panasonic ZS45 and Nikon P1000.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic ZS45 is significantly lighter (1166g ) than the Nikon P1000 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-ZS45 (Lumix DMC-TZ57) nor Nikon Coolpix P1000 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 Top Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Nikon P1000's 3.20" LCD screen is slightly larger than Panasonic ZS45's 3 screen.