Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Panasonic ZS1 and Panasonic GF3 side-by-side from the front, back and top in their relative dimensions. Panasonic ZS1 has external dimensions of 103 x 60 x 33 mm (4.06 x 2.36 x 1.3″) and weighs 229 g (0.50 lb / 8.08 oz) (including batteries). Panasonic GF3 has external dimensions of 108 x 67 x 32 mm (4.25 x 2.64 x 1.26″) and weighs 264 g (0.58 lb / 9.31 oz) (including batteries).
Below you can see the front view size comparison of Panasonic ZS1 and Panasonic GF3. Panasonic ZS1 is 5mm narrower and 7mm shorter than Panasonic GF3 but it is also 1mm thicker. As you can tell, actually this is not a fair size comparison since Panasonic ZS1 has a built-in lens but Panasonic GF3 doesn't. Once you put a lens on GF3, its thickness will increase significantly.
![Panasonic ZS1 vs Panasonic GF3 Camera Size Comparison - Front View]()
Comparison image of Panasonic ZS1 and Panasonic GF3 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of Panasonic ZS1 and Panasonic GF3.
![Panasonic ZS1 vs Panasonic GF3 Camera Size Comparison - Back View]()
Comparison image of Panasonic ZS1 and Panasonic GF3 Size and Weight - Back View
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic ZS1 is 35g lighter than the Panasonic GF3 but we don't think this will make a significant difference.
Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on GF3, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither Panasonic Lumix DMC-ZS1 (Lumix DMC-TZ6) nor Panasonic Lumix DMC-GF3 provides any type of weather sealing in their body, 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 Mirrorless Cameras with Weather Sealing
LCD Screen Size and Features
Panasonic GF3's 3" LCD screen is slightly larger than Panasonic ZS1's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.