That's normal, my lens also had that same problem. It has to do with the design of the lens, you cannot compare it with a fixed lens on a videocamera that have variable and very smooth zoom speeds. I always operated the zoom manually on the ea50 which did work surprisingly well.

In the anouncement of the Sony SELP18105 it was said, that it wont have that zoom issue...
and it zooms faster... Can anyone confirm that?

What use this button? H M L
http://static.bhphoto.com/images/multiple_images/images500x500/IMG_298999.jpg

high, medium, low. is the speed of the zoom controller, the slider right next to it.

for use on cameras with no rocker zoom, like compact photo cameras

In the anouncement of the Sony SELP18105 it was said, that it wont have that zoom issue...
and it zooms faster... Can anyone confirm that?

I can confirm the 18-105 doesn't drop focus like the 18200. It isn't parfocal either, the focus shifts quite a bit when zooming (in MF mode).

high, medium, low. is the speed of the zoom controller, the slider right next to it.

for use on cameras with no rocker zoom, like compact photo cameras

On my EA50 whatever I set this switch to - the zoom travels at the same rate - It's useless.

Peter,

As Marlin said that switch only affect the slider switch next to it. It is not supposed to effect your rocker speed. If it does not change the slider switch speed something is wrong. But it is not there for the EA50 anyway.

Steve

Hi Pete

Power Zoom speed is set via the menu the HML switch as Steve says is for the manual slide switch on the lens .... You will find the Power Zoom settings in the menu options and they do work but remember that the power zoom rocker itself is progressive!

Chris

The zoom problem does seem to be luck of the draw. This tread caused me to test mine. I don't have the problem. It may be there to a small extent, but it does NOT look like the clip posted above.

Steve

Hi Steve

I have also never had the issue on either of my cameras using the stock lens! Then again I rarely zoom while filming I think it's more noticeable on a fast zoom (on H) as the power zoom engages so some lens might have a bit of play in the gearing network? If I do zoom it's really, really slow so that's probably why I never see it ...apart from a very rare zoom while filming I only use the zoom for framing so I would see the issue.

If it does happen then a simple workaround would be to zoom first and film once you have framed or simply zoom slowly. The rocker is progressive so a light touch on the switch starts the zoom very slowly and then you can speed up once the "slack bit" is past.

Chris

today sent me a new lens but the problem remains and the new lens

Like I said, it's not a problem but more a design limitation, many users, including me had reported this "issue" on the stocklens but it appears to just be like that.

I can confirm the 18-105 doesn't drop focus like the 18200. It isn't parfocal either, the focus shifts quite a bit when zooming (in MF mode).

Is the zoom also faster? I mean the velocity of the zooming...