Chuck,
Hassleblad used a bayonet mount filter system. Worked great!
Leo Wesson
leowesson.com
> On Feb 21, 2015, at 07:33, Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
> wrote:
>
> I think following the design of a side-pinch lens cap would be very
> difficult. If you look at the underside you'll see that much of the
> real-estate is occupied by the spring and slide mechanism.
>
> I think more valuable would be a bayonet mount for filters. I can't recall
> which camera/lens maker made such things but I think such have been used in
> the past. From things you've said here before I think you're something of a
> machinist and probably have (at least) a metal lathe. How about a 2-part
> adapter: the lens side consists of male threads to the lens on the back side
> and a thin, larger diameter plate topped with female bayonet flanges on the
> front side. The filter side is a thin plate with male bayonet flanges on the
> back side and filter threads in the center of the plate. If you make it
> large enough you could probably employ filter adapter rings to cover several
> filter and lens filter ring diameters.
>
> Chuck Norcutt
>
>
>> On 2/21/2015 6:35 AM, Wayne Harridge wrote:
>> I've never heard of such a device, might catch on if it was well fitted so
>> that it didn't pop off too easily. Of course it may be a bit problematic
>> with very wide lenses (vignetting).
>>
>> ...Wayne
>>
>>
>> -----Original Message-----
>> From: olympus
>> [mailto:olympus-bounces+wayne.harridge=structuregraphs.com@xxxxxxxxxxxxxxxxx
>> ] On Behalf Of Chris Trask
>> Sent: Saturday, 21 February 2015 11:19 AM
>> To: Olympus Discussion Group
>> Subject: [OM] Speaking of Adaptors
>>
>> I was out hiking today along my favourite wildflower trail and took
>> over 100 photos, some of which will end up on Flickr this weekend. While
>> taking all these photos, I came up with the thought that having an adapter
>> that I could screw an often-used filter onto and then simply clip it to the
>> lens like you would do with a side-pinch lens cap. Anyone know of such a
>> device?
>>
>>
>> Chris
>>
>> When the going gets weird, the weird turn pro
>> - Hunter S. Thompson
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