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Crop zoom

A

AlanB

New Member
Joined
Mar 10, 2026
Messages
6
I'm a recent S9 buyer and just added the 50/1.8 to my 18-40mm. This is probably not news to experienced panasonic users, but I've discovered with the 50mm that if I have crop zoom turned on and assign the zoom function to the focus ring (whilst in AF mode), this effectively turns the prime into a zoom lens, the zooming achieved by turning the focus ring. Very clever indeed.
 
Indeed, that‘s a nice feature. My Viltrox 16mm f1.8 acts like a 16-33mm zoom
 
Mildly annoying that, contrary to Hybrid zoom, this crop zoom feature only seems to work with LUMIX lenses.
 
Jan.Wedekind said:
this crop zoom feature only seems to work with LUMIX lenses.
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Crop zoom works with any lens, LUMIX or other. But the feature of using the focus ring to zoom only works with LUMIX lenses. With other lenses you zoom with the control wheel buttons, right to zoom out and left to zoom in.
 
CharlesH said:
Crop zoom works with any lens, LUMIX or other. But the feature of using the focus ring to zoom only works with LUMIX lenses. With other lenses you zoom with the control wheel buttons, right to zoom out and left to zoom in.
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That‘s not correct. To my surprise the Viltrox 16mm 1.8 supports the focus ring functions as well.
 
AlanB said:
Good to know. Possissibly because Viltrox is an L mount member?
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I think so. I wrote Sirui to add that support for their Aurora lenses as well. But I‘m not sure they will…
 
Just tried my new Sigma 70-200 2.8 - it does support the focus ring functions, too.
 


p.s After I tried it, this menu came out. How to remove it?
 

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Thanks for sharing this - I did not know. Now I have to go check it out ...
 
I set crop zoom. But "focus ring setting during AF" is grayed out. I wouldn't mind setting the front dial (instead of the focus ring) to perform the zoom. Suggestions?
 
snaimpally said:
I set crop zoom. But "focus ring setting during AF" is grayed out. I wouldn't mind setting the front dial (instead of the focus ring) to perform the zoom. Suggestions?
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Which lens did you had attached?
 
snaimpally said:
I tried the TT 40mm f2 and the SG 35mm f2.2. I'll try a Lumix lens.
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Just a tip: check if there‘s a firmware update for your lumix lens. And currently, not all Lumix lenses support this function.
 
Thanks Alan. I'll check it out. I'm sure there is something that I am not setting properly.
 
I'd be interested in the SG35 if crop zoom/ focus ring zooming does work with it, so please let us know how you get on. Although the Lumix 40/2 is extremely tempting.
 
AlanB said:
I'd be interested in the SG35 if crop zoom/ focus ring zooming does work with it, so please let us know how you get on. Although the Lumix 40/2 is extremely tempting.
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I got crop zoom using the focus ring to work with the SG Image 35mm f2.2! Not sure what I was doing earlier, but when I went in to the menu, I was able to set it.
 
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