Different thread sizes

[FFlyer 0]

I have ordered a new camcorder to replace the one which has finally given up and broken. The problem is that the new camera has a 30mm thread while the old one has a 25mm thread. Are all my existing wide angle lenses now useless, or is there a way to make them work with the new camera without cropping any of the image out?

I know a step ring would work if I was going from a small camera thread to a bigger wide angle lens thread,....but now im going the other way, ie: big camera thread to small wide angle lens thread.

Any ideas? or am I going to have to fork out for new lenses if I dont want to loose part of the image?

Thanks

[PhreeZone 20]

Going smaller to larger makes the lenses useless unless you zoom in to eliminate the stepdown ring that you would need. You are really looking at needing all new lenses.

Yesterday is history
And tomorrow is a mystery

Parachutemanuals.com

[dragon2 2]

All my lenses are 37mm for exactly that reason, I can fit them on most if not all cameras with or without a step-up ring. Adding a step-up ring on some lenses necessitates zooming in slightly to prevent dark corners and a ring lessens the FOV slightly, but it saved me a lot of money

ciel bleu,
Saskia

[Bowen 0]

try this first.

camerafilters.com

-Bowen

Retired Tunnel Instructor, Sky/Tunnel Coach

Former dealer for 2k Composites, Skysystems, Alti-2, Wings

[DSE 5]

The only thing camerafilters.com can offer the OP is the ability to purchase a step-up ring, which will assure vignetting/ringing. You can easily go from a smaller mount to larger lens, but you can't properly downsize the lens to a larger mount.
Saskia's suggestion (for those still looking at lenses) of purchasing a 37mm lens is overall, the best broad plan, as it allows for resizing lenses to various thread sizes while avoiding/minimizing vignetting.

[FFlyer 0]

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All my lenses are 37mm for exactly that reason, I can fit them on most if not all cameras with or without a step-up ring. Adding a step-up ring on some lenses necessitates zooming in slightly to prevent dark corners and a ring lessens the FOV slightly, but it saved me a lot of money

Thanks for the suggestion. If there's no way of getting around having to buy new lenses, then it looks like going for a 37mm lens will be the best option. Is there any downside to using a 37mm lens on a 30mm camera?

Im getting an hc96 btw if that makes any difference. And now that it looks like ill have to buy new lenses, they will most likely be 'way cool'.

[dragon2 2]

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All my lenses are 37mm for exactly that reason, I can fit them on most if not all cameras with or without a step-up ring. Adding a step-up ring on some lenses necessitates zooming in slightly to prevent dark corners and a ring lessens the FOV slightly, but it saved me a lot of money

Thanks for the suggestion. If there's no way of getting around having to buy new lenses, then it looks like going for a 37mm lens will be the best option. Is there any downside to using a 37mm lens on a 30mm camera?

Im getting an hc96 btw if that makes any difference. And now that it looks like ill have to buy new lenses, they will most likely be 'way cool'.

Besides the 2 points I mentioned?

ciel bleu,
Saskia

[The111 1]

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All my lenses are 37mm for exactly that reason, I can fit them on most if not all cameras with or without a step-up ring.

I must be missing something. How can you fit 37mm to "most if not all cameras" without a step-up ring? There are obviously lots of cameras with threads that aren't 37mm... or we wouldn't have all those various thread sizes in existence.

Why is 37mm the magic number?

www.WingsuitPhotos.com

[DSE 5]

Because it's the biggest thread mount of all the small format cams (except the very weird Panasonic 42mm). And you can easily put a 37mm on a 25, 27, 30, 32, 35, or 37mm mount and not see halo or vignetting using a stepup ring, but if you have a small lens that you'd like to mount on a 30 or larger lens thread, you can't really avoid vignetting/haloing. You can zoom in, but that kills most if not all, the value of the wide angle.

[The111 1]

Oh ok, thanks.

www.WingsuitPhotos.com

[FFlyer 0]

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Besides the 2 points I mentioned?

haha, yeah sorry I was just a bit confused,...if the camera has a 30mm thread, and you're attaching a 37mm wide angle lens by using a step ring, then why do you need to zoom in? I would understand if it is the other way around?

Sorry, dont know much about this stuff.

[dragon2 2]

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Besides the 2 points I mentioned?

haha, yeah sorry I was just a bit confused,...if the camera has a 30mm thread, and you're attaching a 37mm wide angle lens by using a step ring, then why do you need to zoom in? I would understand if it is the other way around?

Sorry, dont know much about this stuff.

I've seen lenses where you'd need to zoom in slightly because otherwise the corners get a bit dark due to vignetting, this usually only show on a pc not on a tv screen. Most lenses do not have this problem, but some do, esp if you need to use 2 step-up rings in a pinch because you haven't got the right one, for instance if you use both a 25-30 and 30-37mm ring to go from a 25mm camera to a 37mm lens. Tip: don't do that

This is different from the vignetting you get when using a 25mm lens on a 30mm camera.

Not sure if I'm explaining this right anyway it's not usually a problem.

ciel bleu,
Saskia

[Fast 0]

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Besides the 2 points I mentioned?

haha, yeah sorry I was just a bit confused,...if the camera has a 30mm thread, and you're attaching a 37mm wide angle lens by using a step ring, then why do you need to zoom in? I would understand if it is the other way around?

Sorry, dont know much about this stuff.

I've seen lenses where you'd need to zoom in slightly because otherwise the corners get a bit dark due to vignetting, this usually only show on a pc not on a tv screen. Most lenses do not have this problem, but some do, esp if you need to use 2 step-up rings in a pinch because you haven't got the right one, for instance if you use both a 25-30 and 30-37mm ring to go from a 25mm camera to a 37mm lens. Tip: don't do that

This is different from the vignetting you get when using a 25mm lens on a 30mm camera.

Not sure if I'm explaining this right anyway it's not usually a problem.

The reason you might get slightly dark corners in this setup is because the step ring moves the lens you are attaching farther from the camera's lens, so its own field of view may start to see the edge of the attached lens.

~D
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