DPReview.com is closing April 10th - Find out more

Is Panasonic 12-35mm II parfocal?

Started Feb 25, 2018 | Discussions thread
Stejo
Stejo Senior Member • Posts: 1,461
Re: Is Panasonic 12-35mm II parfocal?

kolyy wrote:

But we know it, just you don't. So you are wrong, this is very well known and my 12-35/2.8 behaves exactly the same. The second generation should have fixed this and it was even highlighted by Panasonic in the press release:

Notably, the new lenses excel in video recording performance. In addition to the silent operation achieved by the inner focus drive system, the micro-step drive system in the aperture control section helps the camera to smoothly capture the brightness changes when zooming or panning.

https://www.dpreview.com/news/2840690248/panasonic-updates-four-lenses-improving-autofocus-and-image-stabilization

The so called micro-step drive system is for smoothing operation when the diaphragm does change, either through user input or auto exposure.

Zooming in and out while in manual exposure mode does not involve closing and opening the diaphragm in the 12-35, the 35-100 or any other constant aperture zoom.

 Stejo's gear list:Stejo's gear list
Panasonic Lumix DMC-G7 Panasonic GH5 Samyang 85mm F1.4 Aspherical IF Samyang 7.5mm F3.5 Fisheye Sigma 18-35mm F1.8 DC HSM Art +7 more
Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow