This adapter should allow bigger lenses to be fitted...
http://www.japanexposures.com/2010/...rds-m43-t-mountc-mount-lens-connector-s-slim/
http://www.japanexposures.com/2010/...rds-m43-t-mountc-mount-lens-connector-s-slim/
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It could help a lot of c-mount lenses actually if they built it correctly. The c-mount lenses don't fit completely flush against the bottom of the adapter, but sit on the lip that's near the center thread. From what I've measured on my c-mount lenses, that center section is about 0.5-0.6mm thick, and has a radius of about 15mm from the lens center. If this flatter adapter fits those dimensions, then it eliminates the inside interference issue. The flatter outer ring of the adapter can then eliminate the second interference issue, which is the edge of the lens mount in some cases. This promises to allow quite a few lenses to fit without machining.I have a Hawk adapter, this new one appears to be lower profile on the edge, being completely flat. Not sure which lenses this may help...maybe MS Optical would know?
Sounds a bit ridiculous to put all that cash into a $25 lens, don't you think? It may not be pretty, but it's MUCH cheaper to grind the lens mount by hand. I guess it's worth it for a lens that costs over $1000, but even then I bet you can find a local machine shop that can do it for you for under $100.Just FYI, I wrote to the folks at Japan Exposures about their custom lens machining service.
They tell me it would cost between $55 and $75 USD to machine a lens for a proper fit. So with the cost of their adapter, it would total around $175 to $195, not including shipping. I'm guessing it would be around $250 USD all in.
They also indicated that turn-around time would normally be about one week.
regards
Santo
Yes, it's a bit pricey. I think I may get the hawk peng adapter and borrow a dremel grinding tool.Sounds a bit ridiculous to put all that cash into a $25 lens, don't you think? It may not be pretty, but it's MUCH cheaper to grind the lens mount by hand. I guess it's worth it for a lens that costs over $1000, but even then I bet you can find a local machine shop that can do it for you for under $100.
soooo... what happens when my $25 lens out performs a $3,600 lens? :ROTFL:Sounds a bit ridiculous to put all that cash into a $25 lens, don't you think? It may not be pretty, but it's MUCH cheaper to grind the lens mount by hand. I guess it's worth it for a lens that costs over $1000, but even then I bet you can find a local machine shop that can do it for you for under $100.
Not sure what that has anything to do with what I wrote. If it makes you feel better to spend $250 on a $25 lens that shoots like a $3600 lens, go for it. I'm happy grinding mine by hand. If I screw something up, I can buy another 9 lenses to get it right and still come out ahead of paying for having a single lens machined... At the very least, I certainly don't feel like having to ship a simple machining job to Japan when I have about 100 local machine shops in town hungry for work.soooo... what happens when my $25 lens out performs a $3,600 lens? :ROTFL: