18 replies to this topic

[gleeman]

52-49 + 49-52 + 52-43










very slight vignette when the lens is focused on a near distance object











PROS
lightweight
low distortion, low CA


CONS
bigger vignette(when focusing at far distance)
AF hit or miss

[videogamemaker]

Thanks for the examples. Your filter adapters look like they push the adapter quite far from the lens. Maybe try using slimmer ones or a single adapter if possible?

[gleeman]

Thanks for the examples. Your filter adapters look like they push the adapter quite far from the lens. Maybe try using slimmer ones or a single adapter if possible?

this is the best setup I've tried so far
I also tried 49mm adapter + 49-43 step down ring, the lens will hit the 49-43 ring if You try to focus

[gleeman]

more photos

[Frankie]

this is the best setup I've tried so far
I also tried 49mm adapter + 49-43 step down ring, the lens will hit the 49-43 ring if You try to focus

I am interested in this tele-adapter.

What is the mounting thread size? Studying your pictures, I presume it is f-52mm???

If so, there is an adapter ring that changes the Fuji f-49mm into a f-52mm and may provide the closest fitting...which should also clear the X-100 lens at macro mode. See:

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[gleeman]

I am interested in this tele-adapter.

What is the mounting thread size? Studying your pictures, I presume it is f-52mm???

If so, there is an adapter ring that changes the Fuji f-49mm into a f-52mm and may provide the closest fitting...which should also clear the X-100 lens at macro mode. See:

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Hi Frankie
it's 43mm thread



as you see, I tried a 49-43mm step down ring first, the lens will hit it

current Setup :52-49(as a short 49mm adapter) + 49-52 + 52-43





(52-49 as a short 49mm adapter)




(49-52 + 52-43)

[Frankie]

Hi Frankie
it's 43mm thread

as you see, I tried a 49-43mm step down ring first, the lens will hit it

So, what is needed is a thread-size build up from f-43mm to f-49mm...I have used such devices before, might even have one in-stock...stay tuned.

See:

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To avoid the X-100 lens hitting something, an 8mm allowance from the back flange [after screwing off the cover-ring] is needed. Fuji, UN and many others have a total ring depth of 9.2mm [allowing for also a filter]

I will try also to find a f-49mm to f-43mm adapter of 8mm+ depth...that way, the Ricoh unit and be mounted directly onto the f-49mm Fuji lens thread.

[gleeman]

So, what is needed is a thread-size build up from f-43mm to f-49mm...I have used such devices before, might even have one in-stock...stay tuned.

Frankie,
I have one
the fuji lens will hit the 49-43 ring, not the back flange of teleconverter

49-43

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52-43

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[Frankie]

Frankie,
I have one
the lens will hit the 49-43 ring, not the teleconverter

Ah...now I understand.

The X-100 lens unit dia. is ~45mm...will hit any smaller opening if not enough depth is allowed.

So, the thread-reducer needs to be nearly flat...at least not pround of the Ricoh thread itself. What...~2.5mm???

What is needed is a one-piece f-49mm to f-43mm adapter with a cavity depth of 8mm+...similar to this DIY hood idea except the threaded opening is 43mm. [The ID of that m-49mm~f-43mm donor part is 46mm and clears the X-100 lens unit.]



I have studied your set-up in Post 1. Also, the Ricoh lens quality is the best I have seen...if the vignetting could indeed be reduced to the minimum by mounting the unit closest to the X-100 lens.

I would be happy even if the set-up only works in non-macro mode. In such case, the depth needed is only 4mm total [The X-100 lens at "off" protrudes 0.6mm beyond the lens collar; recesses ~1mm at infinity and flush at 0.5m focal distances]. My avatar DIY dome hood is based on those measurements.

[gleeman]

Ah...now I understand.

The X-100 lens unit dia. is ~45mm...will hit any smaller opening if not enough depth is allowed.

So, the thread-reducer needs to be nearly flat...at least not pround of the Ricoh thread itself. What...~2.5mm???

What is needed is a one-piece f-49mm to f-43mm adapter with a cavity depth of 8mm+...similar to this DIY hood idea except the threaded opening is 43mm. [The ID of that m-49mm~f-43mm donor part is 46mm and clears the X-100 lens unit.]



I have studied your set-up in Post 1. Also, the Ricoh lens quality is the best I have seen...if the vignetting could indeed be reduced to the minimum by mounting the unit closest to the X-100 lens.

I would be happy even if the set-up only works in non-macro mode. In such case, the depth needed is only 4mm total [The X-100 lens at "off" protrudes 0.6mm beyond the lens collar; recesses ~1mm at infinity and flush at 0.5m focal distances]. My avatar DIY dome hood is based on those measurements.

Hello Frankie
maybe you can make a adjustable adapter ...


also I think that we'll be happy with this teleconverter if the X100 has in-camera digital zoom/crop to about 50mm lens FL ....

[gleeman]

1.this is AF-without-macro setup (also focus distance must be far than 2M to avoid hitting the lens)



52-49(52mm male thread) + 58-52(52mm female thread inside) +52-43(52mm male thread)








2.compare to AF-with-macro setup(52-49 + 49-52 + 52-43)



3.MF and handheld the teleconverter,that's the limit I can reach

[Frankie]

Hello Frankie
maybe you can make a adjustable adapter ...
also I think that we'll be happy with this teleconverter if the X100 has in-camera digital zoom/crop to about 50mm lens FL ....

This is what I have in mind:

The f-49mm silver adapter ring is wide enough and depth good enough for maximum macro...as is in the set-up pictured. All I have to do is replacing the original f-30.5mm adapter pictured [minimum ID 46mm] with a f-43mm one [minimum ID 46mm if available or lathe to fit]...the Ricoh TC-1 screws right in.

Counting threads in your pictures, the TC-1 would need 3 x 0.75mm+ in total thread depth, plus something... What is the total depth from flange???

In making a thin MF non-macro unit, internal depth for the lens needs only be 4mm [same as my DIY hood], reducing the distance resulting in a little vignetting at f-11, very much like your hand-held shot.

[The X-100 lens at "off" protrudes 0.6mm beyond the lens collar; recesses ~1mm at infinity and flush at 0.5m focal distances...tried-and-true].



I would probably make it in two pieces, with the silver adapter ring only deep enough so that after unscrewing the TC-1/adaptor-top as one unit would leave enough thread [3 x 0.75mm] in the silver ring as a simple f-49mm thread adapter for dome hood and filters.

Post-processing cropping of residual vignetting is easy enough.

[gleeman]

[jknights]

These results are similar to when I tried a x3 teleconverter.
My x2 unit also vignettes very slightly from f4/5.6 upwards.
The same is true with the x2.2 but it starts to vignette at f2.8

I'm sure that somewhere there is a solution but I just need to find a good camera shop with a lot of different sized teleconverters.

[gleeman]

Vignette is not a big deal
I've tried some TCs,
This TC is the only one delivered low CA and low distortion.so far

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F8 ,JPEG ,cropped

[gleeman]

F2.8, JPEG, no cropped

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[Frankie]

The last example in Post 11, if cropped ~10% would be clean enough. That would essentially be a digital zoom making it a 2X extender equivalent...I would be happy with that.

Such custom flush-mounting would allow an infinity to 0.5m focal range and I am happy with that as well...shopping time.

[videogamemaker]

How wide is the back glass opening? like the physical width of the glass closest to the fuji lens? This looks like a nice converter, but at 150 USD it's one of the more expensive ones.

[matzan481]

Why is it so magenta colored?