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για τους βιντεογραφους : What’s nice about the 8-18mm zoom mechanism is that it is parfocal, meaning that the focus doesn’t change when zooming in or out.
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the Leica lens offers the following:
- 8mm: f/2.8
- 10mm: f/3.2
- 12mm: f/3.4
- 14mm: f/3.6
- 18mm: f/4
The fast aperture of f/2.8 is interesting if you work in low light
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If you want the sharpest lens, the Olympus 8-25mm is the answer. It is simply flawless, from edge to edge, at all focal lengths and apertures that matter (before diffraction). Note that the Panasonic 8-18mm is far from lacking sharpness, quite the contrary actually. It’s just that Olympus has set the bar really high.
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The 8-25mm Pro has additional advantages, such as better close-up capabilities, a better manual focus experience thanks to the sliding focus ring, and 7mm extra that can be helpful in various situations.
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Ι admit I still have a thing for the Panasonic / Leica 8-18mm, despite its (small) imperfections. I love the build quality, the weight and the fact that the zoom mechanism doesn’t extend. The faster aperture of 2.8 at 8mm can be useful in low light situations or for specific genres such as astrophotography.