I think I'd only take off the offending 2mm and only over the arc
required. It was put there for a purpose and I'll bet there's a good
chance it will still serve the same purpose after minimalist surgery.
Chuck Norcutt
On 9/22/2011 8:34 PM, Chris Trask wrote:
>>
>> I found this K mount Soligor 85-205 on ebay but it doesn't seem to have
>> any fixed metal bits next the the aperture arm as you've described.
>>
> <http://www.auctiva.com/hostedimages/showimage.aspx?gid=375697&image=4820938
> 54&images=482093603,482093662,482093721,482093790,482093854&formats=0,0,0,0,
> 0&format=0>
>>
>
> Yep, it's not there at all.
>
>>
>> But I think this may be what you're talking about on this Pentax 50/4
>> macro
>>
> <http://www.pentaxanomy.com/ebay/listings/0FC1A4E7-A789-44A1-AC6A-2E0B18BD99
> 42.jpg>
>> Note the aperture arm at 1 o'clock and a "fixed metal part" below it.
>>
>
> Yes, that's exactly the item I'm referring to.
>
>>
>> Given that not all lenses seem to have it and that they're not all the
>> same size when they do I suspect that this is nothing but a protector
>> for the aperture tab when the lens gets set on its hind end. Just keeps
>> it from getting bent.
>>
>
> Yes, that's a good assumption. I had also thought that it might be
> there to prevent reflections off the actuator, but I like the protector idea
> much better. The adapter ring will be attached to the lens for bloody ever
> once I get this matter taken care of.
>
> I like this lens very much. It's not as heavy as you might expect, and
> learning to operate the three controls without looking at them to little
> time to lear, except that the focusing is the reverse of the majority of my
> lenses. Wonderful macro performance.
>
>>
>> But maybe a Pentax owner can validate my assumption before you get out
>> the Dremel tool.
>>
>
> The item is part of a ring that holds the aperture actuator ring in
> place. I'm going to play it safe and ask the repair tech at the local
> camera shop to loosen the four screws holding it in place for me. They're
> JIA style Philips head, they're very tight, and I don't want to strip them.
> Then I'll mount the part on the end mill rotary table and VERY carfully
> remove most if not all of the offending item.
>
> Thank you for the response. I now feel comfortable in removing it.
>
> Chris
>
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