I played with a couple of other lenses yesterday to see if it was
possible to achieve 0.5X with the E-M5 and slide copier. Not with what
I have available. I was going to try my Zuiko 35-70 (49mm filter)
before I remembered I'd given it to my granddaughter. So I tried my
Soligor 35-70/2.5 (not 49mm filter) at 60 and 70mm but it didn't work.
Just like the 50/3.5 macro the bellows collapses on itself before you
reach focus and you can't get the body close enough to the lens. I then
tried the Zuiko 85/2 (also 49mm filter) but the entire bellows focusing
rail isn't long enough to get an 85mm lens to focus before the rear
standard carrying the body falls off the end of the rail. I'm beginning
to suspect that even the Zuiko 80/4 macro might be an iffy situation for
0.5X. The specs say that 0.5X is its minimum but it that's off even
slightly in might not fit the image.
I think the only way to make it work reliably is to make a custom
OM-m4/3 adapter for use with the 50mm macro that would allow going down
to 0.5x instead of a minimum of 0.68X. The OM->m4/3 adapter's normal
length is about 20mm. What's needed is something with about 15mm
removed between the two mounts.
I also tried the 5D at 1:1 with the 50/3.5 macro but wasn't much
impressed with the image quality I got. I should probably just quit
messing around and go back to the scanner.
Chuck Norcutt
On 5/20/2013 4:49 AM, Piers Hemy wrote:
> With the proviso that I haven't tried it yet, I think a 55mm-49mm step down
> ring with an empty 49mm filter would do the job, and would then point the
> way to use lenses with filters other than 55mm. Why, with a 62-49 ring you
> could even use the legendary 35-80! Although in that instance "Why?" might
> be more than appropriate.
>
> Piers
>
> -----Original Message-----
> From: Chuck Norcutt [mailto:chucknorcutt@xxxxxxxxxxxxxxxx]
> Sent: 20 May 2013 03:57
> To: Olympus Camera Discussion
> Subject: Re: [OM] Oly 4/3 vs m4/3 lens mounts and adapters
>
> But it's also useful on the bellows when using a lens with 55mm filter to
> attach the bellows or slide copier shade to the lens... if you could find
> one. :-)
>
> Chuck Norcutt
>
>
> On 5/19/2013 9:58 AM, Mark Dapoz wrote:
>>
>> I see what you mean now. Yes, I have the actual product and all of the
> original documentation that came with it. I think this confusion comes down
> to a "translation" error. The original Japanese instruction sheet correctly
> depicts the adapter without any threads while the English translated one
> shows some threads. Here's a comparison of the two documents:
>>
>> http://olympus.dementix.org/misc/copy_stand_adapters.jpg
>>
>> This 55 -> 49 adapter is really only useful for the copy stand.
>>
>> -mark
>>
>>
>> On 13-May-19, at 7:32 AM, Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
> wrote:
>>
>>> That's a great find but we're apparently coming at our views from
>>> different sources. If I read you correctly you're looking at the
>>> *actual product* and stating that the outside of the 49mm end is not
>>> threaded and the inside has ridges. What I've been looking at is the
>>> handy_copy_stand.pdf. That's a copy of the user's manual in PDF form
>>> that was included in the eSIF as distributed on CD. That clearly
>>> shows the 55/49mm adapter to have threads on the outside of the 49mm
>>> end as would a 49mm filter. The interior ridges are not illustrated.
>>>
>>> Chuck Norcutt
>>>
>>>
>>> On 5/18/2013 9:29 PM, Mark Dapoz wrote:
>>>>
>>>> I had to dig out my sample of the copy stand to figure out exactly
>>>> what is going on. The 43 -> 49 and 22.5,43.5 -> 49 adapters do
>>>> indeed have threads only on the smaller side, the 49mm copy stand
>>>> side is completely smooth. The 55 -> 49 adapter on the other hand
>>>> appears to have threads on both sides of the adapter, but on closer
>>>> inspection the 49mm side "threads" aren't really threads. The
>>>> inside of the adapter has ridges which makes it appear to have
>>>> threads but they aren't. I suppose Olympus did this to cut down on
>>>> any light reflection since the adapter is going into a larger lens
>>>> opening. So the illustration in the SIF is correct, only the
>>>> assumption that they're threads is incorrect.
>>>>
>>>> -mark
>>>>
>>>> On 13-May-18, at 7:45 PM, Chuck Norcutt
>>>> <chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
>>>>
>>>>> I don't know what you refer to as the "SIF" other than source
>>>>> documents for the eSIF that I don't have. But the eSIF does
>>>>> reference the user's manual for the Handy Copy Stand which does
>>>>> show the 3 adapters available for it. One of those is the 49/55
>>>>> and, as you stated, the drawing shows the 49mm side as threaded
>>>>> whereas the other two adapters are not threaded on both sides. I
>>>>> agree. It must be an error.
>>>>>
>>>>> Chuck Norcutt
>>>>>
>>>>> On 5/18/2013 4:00 PM, piers@xxxxxxxx wrote:
>>>>>> The 55-49 adapter appears in the SIF (not eSIF, where it is said
>>>>>> to be optional) as part of the Handy Copy Stand set, for just the
>>>>>> same application, and the illustration is consistent with your
>>>>>> description, except it has a thread on the 49mm end. I think
>>>>>> that's an error, as the smaller adaptors don't have a thread.
>>>>>>
>>>>>> Piers
>>>>>>
>>>>>> On 18/05/2013, Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
>>>>>> wrote:
>>>>>>> The next question is whether the 49/55 adapter was originally
>>>>>>> supplied with the bellows. Does anyone actually have one of
>>>>>>> these and does it look as I described that I think it must look?
>>>>>>> Searching the eSIF (briefly) did not reveal such a part to me.
>>>>>>>
>>>>>>> I've got to think about how to replicate a part like that for
>>>>>>> reversing my 90/2.5 Viv S1 macro which a 58mm filter. If there's
>>>>>>> a 49 to 55mm filter adapter that would work. You'd need the ring
>>>>>>> from the 49mm filter to make a 51mm diameter attachment point for
>>>>>>> the bellows.
>>>>>>>
>>>>>>> Chuck Norcutt
>>>>>>>
>>>>>>>
>>>>>>> On 5/18/2013 3:03 AM, piers@xxxxxxxx wrote:
>>>>>>>> Splendid stuff, Chuck, it all does now make sense in a way that
>>>>>>>> eSIF and SIF (which I also reviewed) don't even approach. It was
>>>>>>>> late, I didn't follow my own advice to just try it!
>>>>>>>>
>>>>>>>> Piers
>>>>>>>>
>>>>>>>> On 18/05/2013, Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
>>>>>>>> wrote:
>>>>>>>>> You're inferring stuff rather than actually measuring the
>>>>>>>>> bellows. I have done my due diligence and discovered that the
>>>>>>>>> eSIF is perfectly correct. The reason that a Series VI is used
>>>>>>>>> is that hole is supposed to take a filter... a Series VI size
>>>>>>>>> filter... which Wiki tells me thus: Series
>>>>>>>>> number Filter size Adapter ring VI 41.3 mm
> 44 mm My
>>>>>>>>> handy dandy millimeter rule tells me that the thread on the
>>>>>>>>> back of the lens board is (whaddya know) 44mm. I discovered
>>>>>>>>> that very quickly since no 49mm filter would fit there. That
>>>>>>>>> threaded hole is specifically for a filter and not for
>>>>>>>>> reversing lenses.
>>>>>>>>>
>>>>>>>>> Once again, the bellows manual tells you nothing about that
>>>>>>>>> filter provision. Your confusion about reversing lenses I
>>>>>>>>> think comes about from assuming that it's done the way you
>>>>>>>>> would on a camera body by attaching two lenses together joined
>>>>>>>>> by a male threaded ring with threads on each side to match the
>>>>>>>>> lenses to be joined. You've assumed that the
>>>>>>>>> 49/55 adapter is one of those rings... but it is not. It has a
>>>>>>>>> totally different function and isn't really 49mm on one end.
>>>>>>>>>
>>>>>>>>> Once you turn the front lens board around you don't need any
>>>>>>>>> sort of threaded adapter since the OM lens mount on the lens
>>>>>>>>> board is now facing the camera. Just install the lens on the
>>>>>>>>> normal lens mount and it, like the lens board, is now reversed.
>>>>>>>>> Where the 49/55 adapter comes in has to do with attaching the
>>>>>>>>> bellows itself to the lens. The attaching ring normally
>>>>>>>>> attaches to a ring on the back of the lens board that is about
>>>>>>>>> 51mm diameter... or the outside diameter of a lens having a
>>>>>>>>> 49mm filter. When you reverse a lens having a 49mm filter the
>>>>>>>>> bellows attaching ring fits over the lens in the same way as it
>>>>>>>>> does the ring on the back of the lens board. But when you use
>>>>>>>>> a lens with 55mm filter the lens is too large. It needs a
>>>>>>>>> step-down ring. Now, since I have never seen one of these
>>>>>>>>> step-down rings I can only conclude that it has a 55mm thread
>>>>>>>>> on one end and a 51mm unthreaded ring on the other such that it
>>>>>>>>> presents the same diameter to the bellows attaching ring as the
>>>>>>>>> ring on the back side of the lens board.
>>>>>>>>>
>>>>>>>>> Or something like that. If you know something else correct me.
>>>>>>>>>
>>>>>>>>> Chuck Norcutt
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On 5/17/2013 6:23 PM, Piers Hemy wrote:
>>>>>>>>>> Without looking at the Bellows manual I would opine that it
>>>>>>>>>> would be surprising to find that Olympus did not use the
>>>>>>>>>> 49/55mm thread there, as it is intended for reversing OM
>>>>>>>>>> lenses on the (reversed) front standard. Why would they use a
>>>>>>>>>> thread incompatible with all and any of their own lenses? And
>>>>>>>>>> in place of reading a secondary source (useful as the eSIF
>>>>>>>>>> is), why not try it?
>>>>>>>>>>
>>>>>>>>>> So I did look at the 12/81 edition of the Auto Bellows manual,
>>>>>>>>>> and guess what?
>>>>>>>>>>
>>>>>>>>>> I was wrong.
>>>>>>>>>>
>>>>>>>>>> And so is the eSIF, only more wronger (!)
>>>>>>>>>>
>>>>>>>>>> It's a 49mm thread, as "The adapter ring 55-49mm is needed to
>>>>>>>>>> reverse the Macro 55mm F1.2 on the bellows" (p 14). Granted,
>>>>>>>>>> they described the 55/1.2 as a Macro lens, which it isn't, but
>>>>>>>>>> it does have a 55mm filter thread, from which I conclude the
>>>>>>>>>> bellows has only a 49mm thread.
>>>>>>>>>>
>>>>>>>>>> Piers
>>>>>>>>>>
>>>>>>>>>> -----Original Message----- From: Chuck Norcutt
>>>>>>>>>> [mailto:chucknorcutt@xxxxxxxxxxxxxxxx] Sent: 17 May 2013
>>>>>>>>>> 22:26 To: Olympus Camera Discussion Subject: Re: [OM] Oly
>>>>>>>>>> 4/3 vs m4/3 lens mounts and adapters
>>>>>>>>>>
>>>>>>>>>> I tried the focusing stage since Wayne said he'd gotten such
>>>>>>>>>> an arrangement to work with his Pen and, if it worked, would
>>>>>>>>>> require nothing more than what I already have.
>>>>>>>>>>
>>>>>>>>>> I didn't come up with your solution since I've never
>>>>>>>>>> completely read the bellows description in the eSIF which is,
>>>>>>>>>> I think, the only place that tells you that the back of the
>>>>>>>>>> lens board is threaded. But it looks like you need to re-read
>>>>>>>>>> it yourself :-) since the thread is for a Series VI filter and
>>>>>>>>>> is not a 49/55 filter thread.
>>>>>>>>>> Nevertheless, your solution should work given the right bits
>>>>>>>>>> and pieces.
>>>>>>>>>>
>>>>>>>>>> But re-reading the eSIF to understand what you had written
>>>>>>>>>> caused me to think about reversing the lens which might
>>>>>>>>>> provide a bit more room to maneuver since it moves the thick
>>>>>>>>>> base of the lens board to the back side. Maybe.
>>>>>>>>>> Thanks for the memory jog.
>>>>>>>>>>
>>>>>>>>>> Chuck Norcutt
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On 5/17/2013 5:35 AM, Piers Hemy wrote:
>>>>>>>>>>> I may have missed something obvious, but why are you using
>>>>>>>>>>> the focusing stage? Remove the rear standard (camera mounting
>>>>>>>>>>> board) and bellows from the bellows rail, and use the 49/55mm
>>>>>>>>>>> filter threads on the back of the front standard (lens board)
>>>>>>>>>>> to mount the OM-D.
>>>>>>>>>>> You'll need a 55mm m4/3 reverse adaptor such as
>>>>>>>>>>> 271191801433 on the auction site, and a female-female filter
>>>>>>>>>>> adaptor such as this:
>>>>>>>>>>> http://www.camera-filters.com/index.php?main_page=product_inf
>>>>>>>>>>> o&cPath=4
>>>>>>>>>>>
>>>>>>>>>>>
>>> 31&pro
>>>>>>>>>>> ducts_id=7214
>>>>>>>>>>>
>>>>>>>>>>> You may also need a blank filter ring to get extra
>>>>>>>>>>> separation, but I'm sure you'll work that out!
>>>>>>>>>>>
>>>>>>>>>>> Piers
>>>>>>>>>>>
>>>>>>>>>>> -----Original Message----- From: Chuck Norcutt
>>>>>>>>>>> [mailto:chucknorcutt@xxxxxxxxxxxxxxxx] Sent: 16 May
>>>>>>>>>>> 2013 18:04 To: Olympus Camera Discussion Subject: Re:
>>>>>>>>>>> [OM] Oly 4/3 vs m4/3 lens mounts and adapters
>>>>>>>>>>>
>>>>>>>>>>> I'm removing the grain of salt. I mounted the E-M5 on the
>>>>>>>>>>> focusing stage, installed the OM adapter and some OM
>>>>>>>>>>> extension tubes and then put the OM body mount from the
>>>>>>>>>>> bellows onto the end of the tubes. Running the body mount
>>>>>>>>>>> into the bellows connector resulted in the E-M5 setting in a
>>>>>>>>>>> non-level position on the focusing stage.
>>>>>>>>>>> I think my guess of 3mm (maybe 2mm) vertical misalignment may
>>>>>>>>>>> be about right but it's not the height of the body or lens
>>>>>>>>>>> center lines.
>>>>>>>>>>>
>>>>>>>>>>> I had assumed that the OM body was lower and would align
>>>>>>>>>>> properly. Nope, the two camera's lens centers appear to be at
>>>>>>>>>>> the same height so an OM-1 on the focusing stage doesn't
>>>>>>>>>>> align either. The problem of vertical misalignment is caused
>>>>>>>>>>> by the height of the focusing stage.
>>>>>>>>>>>
>>>>>>>>>>> Chuck Norcutt
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> On 5/15/2013 11:15 AM, Chuck Norcutt wrote:
>>>>>>>>>>>> A quick and very rough measurement looks like the vertical
>>>>>>>>>>>> centerline of the E-M5 is about 3mm higher than an OM body.
>>>>>>>>>>>> But take that with a grain of salt.
>>>>>>>>>>>> Also, like the E-P1 the tripod thread is off center from the
>>>>>>>>>>>> lens center by about 9mm. That, however, could likely be
>>>>>>>>>>>> solved by drilling and tapping a new hole in the focusing
>>>>>>>>>>>> stage. I'll take a better measurement later since this has
>>>>>>>>>>>> some promise.
>>>>>>>>>>>>
>>>>>>>>>>>> Chuck Norcutt
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> On 5/15/2013 8:17 AM, Wayne Harridge wrote:
>>>>>>>>>>>>> G'day Chuck,
>>>>>>>>>>>>>
>>>>>>>>>>>>> Something like this should work:
>>>>>>>>>>>>>
>>>>>>>>>>>>> http://www.structuregraphs.com/RandomStuff/15-May-20
>>>>>
>>>>>>>>>>>>>
>>> --
>>>>> _________________________________________________________________
>>>>> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
>>>>> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
>>>>> Themed Olympus Photo Exhibition: http://www.tope.nl/
>>>>>
>>>>
>>> --
>>> _________________________________________________________________
>>> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
>>> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
>>> Themed Olympus Photo Exhibition: http://www.tope.nl/
>>>
>>
> --
> _________________________________________________________________
> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
> Themed Olympus Photo Exhibition: http://www.tope.nl/
>
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|
