pmacc1

The kind of photography I usually do is very fast-paced -- not a lot of time to take a lot of photos in strange places. I need to take a wide variety of photos because it's not always entirely clear what will catch the client's eye. Because of this and because of the need to travel extremely lightly, I have taken to using a superzoom camera. I always carry the wide angle and tele conversion lenses for this camera because, even though the superzoom provides a very wide range of focal lengths, a little more range is sometimes very helpful. Now, the last superzoom I had used a bayonet mount between the camera and the conversion lenses -- this allowed me to put on or take off the conversion lenses very quickly -- I often have the camera in one hand and the conversion lens in the other. I recently bought a new camera, but this one requires a screw mount between the camera and the conversion lenses. I didn't think this would be a huge deal, but it is -- it essentially keeps me from using the conversion lenses because it takes too long to put them on and/or remove them. So, I'm wondering: does anyone know if a screw mount-to-bayonet mount converter exists? See attached for what I'm talking about. It would look like two filters, maybe a little thicker, that I could stick screw onto the camera and onto the conversion lenses. If none exists, does anyone know someone who could manufacture such a converter?

Attached file:
(Download)

rmalarz Loc: Tempe, Arizona

I don't know if they exist, but S.K Grimes will make whatever you need. They've done work for me and it's impeccable.
--Bob

Math78 Loc: Scottsdale, AZ

Maybe a magnetic filter holder? Something like this:
http://www.amazon.com/Lensmate-Quick-Change-Filter-Adapter-Canon/dp/B00RBF689E

Peterff Loc: O'er The Hills and Far Away, in Themyscira.

Can you explain your download please? It makes me think of Nigerian princes!

dpullum Loc: Tampa Florida

Magnetic, like the craft magnetic material that holds the cards to the refrigerator. Hooks to the camera with an adhesive side ... like the adhesive that holds the magnet to the card that is on your frig.

I did a DIY in 2011
http://www.uglyhedgehog.com/t-75114-1.html

similar you can screw in a filter ring and it has the magnetic material on it so you can do your quick change.

speters Loc: Grangeville/Idaho

I have an M-42 screw mount to EF bayonet adapter and there are many others. This one is and old cheapo, that I bought many years ago, I think it was somewhere in the 14 to 19 dollar range. But I have used it quite often and I never had any issues. I also have and old C-mount (srew) to EF bayonet adapter. One just has to google it and there should be a lot of options/offerings!

pmacc1

Had not heard of SK Grimes -- I checked out their website and it looks promising. Thanks!

pmacc1

Unfortunately, magnets would never be able to hold the weight. The wide angle converter is a sizable chunk of glass that weighs quite a bit. Also, the connection needs to be lightproof.

rjaywallace Loc: Wisconsin

You might check CameraQuest.com for the sort of adaptor you are looking for. They have a wide variety.

pmacc1

Thanks for the tip -- that also looks promising.

DTran

I am not so sure about your question. What kind of mount is there on your camera?

spcherub

Check out Fotodiox at https://fotodioxpro.com/collections/lens-mount-adapters - I use two different adapters and they are of high-quality.

amfoto1 Loc: San Jose, Calif. USA

It would be really helpful if you'd tell us what brand and model camera you are using now and what you used in the past.

It sounds as if you are working with non-interchangeable lens cameras... not DSLRs or mirrorless (which are what lens mount adapters are made for).

As best I can tell, the magnetic type adapter might be the best solution. But we really need more info.

RWR Loc: La Mesa, CA

Your auxiliary (AKA “Conversion”) lenses do not attach to the camera, they attach to the front of the camera’s fixed zoom lens. I suspect your bayonet mount lenses were made specifically for your older camera, and will extend too far from the lens with any type of adapter and seriously degrade the image quality of your present camera. You would probably be better off purchasing new generic screw-in auxiliary lenses for whatever size filters the lens on your new camera takes.

louparker Loc: Scottsdale, AZ

Such an adapter is made for converting screw mount Pentax lenses to K-mount (bayonet) -- I have a couple and they're pretty cheap and readily available. Just do a google search.