Andrew,
Thanks so much for all the hood ideas. I think I'll try to find the 24/2
hood. I have a genuine metal hood for the 28/3.5 that I might try with a
step-up ring, though I suspect it'll cause vignetting. I really must
have an Oly hood to go with it. :)
None of that can happen, of course, until I repair the filter ring. I
already have my eye on a few of those "reverse vice" tools that are
specifically designed for repairing the rings. I figure it is worth the
investment, as I am getting more and more into doing my own lens
repairs, conversions, etc. Luckily, the threads are not mangled so it
seems that the repair should be relatively simple.
The clamp-ons are a decent option, but I want to get into the lens
anyway and attempt to clean up the haze, so the filter ring repair is a
must and it will allow me to put the 24/2 hood on it.
Part of me would prefer to send this lens to John (of Zuiko.com) as I
know he would not only do a perfect job but also derive great pleasure
from working on the lens. It's just that I'm feeling very much like
Gollum with this lens.
"My precious!"
The other option would be to take it to International Camera Repair here
in Toronto and have them correct the ring "while I wait". I really
cannot imagine leaving it there alone.
"One Lens to rule them all, One Lens to find them, One Lens to bring
them all and in the darkness bind them."
-Paul
Andrew Fildes wrote:
> On a 5D! - you have a few friends here.
> The hood - The hood for the 24mm F2 would be the one as it has to be
> designed for the minimum zoom range (only the brilliant 35-70mm F3.6
> got around that problem). The one for the 28-48mm might do the job.
> But, given the bent filter ring, that's a problem - the closest clamp-
> on hoods are the rubber hoods for the 35-70mm F4 and 35-105mm but
> they will almost certainly vignette on full frame. I can let you have
> a 35-105mm rubber one if you feel like hacking yourself a rubber tulip!
> Sigma made a range of 'Perfect' hoods - plastic tulips which will
> clip in and wouldn't be bothered by the ding. There should be one at
> 55mm width that will suit 24mm. One of the cheap Chinese ones offered
> on ebay might do the job too. Those are trial and error solutions.
> Best of all - any old lens repairer should have a neat reverse vice
> device which will restore the rim to true round. As it opens, , irt
> pushes the ring back into shape with minimum damage to threads and
> anodised finish. It's worth getting it done right. Personally, for
> the occasional rough repair, I made myself a set of wooden forms in
> 49/52/55/58 sizes - with a small hammer and a shaped wooden flat peg
> I can tap the ding out of most lenses to the point where I can mount
> a filter. Sometimes the alloy is too hard though. It's a crude and
> nervous approach - for a precious lens I'd get it done properly.
> Andrew Fildes
> afildes@xxxxxxxxxxxxx
>
>
>
> On 30/03/2008, at 5:27 AM, Paul Yates wrote:
>
>> You're welcome!
>>
>> The first few samples I've shot show great performance at 24mm f8-f11.
>> Sharp into the corners of my 5D.
>>
>> The haze/low contrast issue can be dealt with relatively well in
>> PP, but
>> I'd really prefer to clean it up.
>>
>> Some samples later, perhaps.
>>
>>
>> -Paul
>>
>> Chris Barker wrote:
>>> That looks very pretty, Paul. Thanks for the information and photos.
>>>
>>> Chris
>>>
>>>
>>> On 29 Mar 2008, at 16:57, Paul Yates wrote:
>>>
>>>> It has arrived!
>>>>
>>>> Based on my preliminary analysis and measurements, I can confirm
>>>> with
>>>> nearly 100% certainty that this lens is a prototype based on the
>>>> design
>>>> in the patent discussed earlier. In the patent, it states a filter
>>>> size
>>>> of "about 55mm". This lens has a 55mm filter diameter, which is
>>>> simply
>>>> one more piece of supporting evidence on top of what I discussed
>>>> earlier.
>>> snip
>>>
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>
>
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