thrice wrote:
All of the compressors from the metabones speedboosters to this kipon 0.8x will increase effective MTF and light gathering capacity.
If one desperately needs the 96mm f/3.2 t/4.0 (in FF terms) of using the lens without the 0.8x then you can have that. If you want the sharper 77mm f/2.5 t/3.2 equiv of using this lens with the 0.8x adaptor that is available to you also.
Many tools exist for many people to get the results they want. None are invalidated simply because you personally haven't found the need.
The t-stop follows as well, because the same amount of light is projected on a smaller area. The lens _is_ getting brighter.
Edit: Or maybe I'm misunderstanding you since you are talking "FF equivalents"?
thrice wrote:
All of the compressors from the metabones speedboosters to this kipon 0.8x will increase effective MTF and light gathering capacity.
If one desperately needs the 96mm f/3.2 t/4.0 (in FF terms) of using the lens without the 0.8x then you can have that. If you want the sharper 77mm f/2.5 t/3.2 equiv of using this lens with the 0.8x adaptor that is available to you also.
Many tools exist for many people to get the results they want. None are invalidated simply because you personally haven't found the need.
I think you're misinterpreting what I'm meaning here. I've been shooting for about sixty years and professionally for about forty of those years and have shot extensively on almost every format from 35mm to 8x10 with stops along the way with virtually every medium format format you can imagine and probably a couple you've never heard of. What I discovered along the way is that when you move to another format you very often end up shooting with non equivalent focal lengths simply because the format itself forces you to think about things differently or, just as often, there simply were no exact equivalents even made. You adapted and in many cases you made even better images than you did before.
I would typically rent lenses I thought I needed and if I ended up renting them two or three times a month then I'd just go out and buy it to avoid the hassle and uncertainty of rentals. You figured out how to make it all work. So what I'm really saying here is to try the lens just the way it is and you might be surprised even though you think you're damned sure you know what you think you want. And these days with a system like the GFX there are so many options to use lenses from other systems that y'all might just surprise yourselves and save a bit of coin at the same time.
But in the end, really, wtf do I actually know. Not much according you guys. I guess I can order up the Kipon as it's only about twelve bills which is not much when you've already spent close to $50K on this system, but I would not be using it to get to whatever the original intended focal length, only altering an existing focal length to suit a particular image. Even Kipon is careful on their website not to make exaggerated claims about the adapter performance, only that it *may* in some instances, improve performance. My guess is that the real answer is that your mileage may vary on that. In the meantime I have a cool album cover to shoot in Kernville.
Peter Figen wrote:
I think you're misinterpreting what I'm meaning here. I've been shooting for about sixty years and professionally for about forty of those years and have shot extensively on almost every format from 35mm to 8x10 with stops along the way with virtually every medium format format you can imagine and probably a couple you've never heard of. What I discovered along the way is that when you move to another format you very often end up shooting with non equivalent focal lengths simply because the format itself forces you to think about things differently or, just as often, there simply were no exact equivalents even made. You adapted and in many cases you made even better images than you did before.
I would typically rent lenses I thought I needed and if I ended up renting them two or three times a month then I'd just go out and buy it to avoid the hassle and uncertainty of rentals. You figured out how to make it all work. So what I'm really saying here is to try the lens just the way it is and you might be surprised even though you think you're damned sure you know what you think you want. And these days with a system like the GFX there are so many options to use lenses from other systems that y'all might just surprise yourselves and save a bit of coin at the same time.
But in the end, really, wtf do I actually know. Not much according you guys. I guess I can order up the Kipon as it's only about twelve bills which is not much when you've already spent close to $50K on this system, but I would not be using it to get to whatever the original intended focal length, only altering an existing focal length to suit a particular image. Even Kipon is careful on their website not to make exaggerated claims about the adapter performance, only that it *may* in some instances, improve performance. My guess is that the real answer is that your mileage may vary on that. In the meantime I have a cool album cover to shoot in Kernville. ...Show more →
You can't imagine that there are people here that knows exactly what they want, and why, and that it does not coincide with your preferences?
The Metabones speedbooster adapter for the Hasselblad V lenses has a 0.71x optic in it, which will make it comparable to the FOV of the lenses on a film body. The Kipon uses a 0.8x optic (probably the same one that is used in the Contax 645 adapter), so it will still have a different FOV. That's an odd decision for the Kipon adapter.
I see these as really interesting if you happen to have a large system of medium format film lenses. I'd love to see what the performance is of the Metabones on a GFX but I haven't seen a review done that was meaningfully usefull to judge the quality of the optics. I may have to test one out with my stable of Hasselblad V lenses.
I must rescind my recommendation of the Kipon 0.8x adaptor, it seems it has a blue halo in the centre of all images when stopped down. My apologies to anyone who was swayed by my recommendation. I will go back and edit my post.
does in camera gfx100s IBIS not works if use m42 adapter? or is any menu settings activate ois when use third party lens on gfx body? or just need only smart gfx adapter somethink ef-gfx.nik-gfx and similar? does ef-gfx adapter for 100eur like andoer or similar not activate OIS in camera and must use only fringer,steelsring or viltrox pro?
mjm6 wrote:
The Metabones speedbooster adapter for the Hasselblad V lenses has a 0.71x optic in it, which will make it comparable to the FOV of the lenses on a film body. The Kipon uses a 0.8x optic (probably the same one that is used in the Contax 645 adapter), so it will still have a different FOV. That's an odd decision for the Kipon adapter.
There are a ton of 645 formats, so it's not really odd that they use the same optics for 6x6 adapters. The cost for developing and manufacturing yet another optical design is probably substantial.
The oddness lies in that Metabones actually manages to make it with (supposedly) profit.
thrice wrote:
I must rescind my recommendation of the Kipon 0.8x adaptor, it seems it has a blue halo in the centre of all images when stopped down. My apologies to anyone who was swayed by my recommendation. I will go back and edit my post.
As usual, there's what we want and then the reality of what's available.
leonasj wrote:
does in camera gfx100s OIS not works if use m42 adapter? or is any menu settings activate ois when use third party lens on gfx body? or just need only smart gfx adapter somethink ef-gfx.nik-gfx and similar? does ef-gfx adapter for 100eur like andoer or similar not activate OIS in camera and must use only fringer,steelsring or viltrox pro?
It should work, though I have read the odd report of it not functioning with some dumb adapters (not a problem I've faced with my dumb FD and Minolta adapters). It will allow you to set the focal length, but it's less effective than it is with their native lenses as the camera isn't getting focus distance information.
freaklikeme wrote:
It should work, though I have read the odd report of it not functioning with some dumb adapters (not a problem I've faced with my dumb FD and Minolta adapters). It will allow you to set the focal length, but it's less effective than it is with their native lenses as the camera isn't getting focus distance information.
thanks. i have M42/gfx adapter for my takumars and zenitar lenses. where in menu set focal length to get IBIS work?
Makten wrote:
There are a ton of 645 formats, so it's not really odd that they use the same optics for 6x6 adapters. The cost for developing and manufacturing yet another optical design is probably substantial.
The oddness lies in that Metabones actually manages to make it with (supposedly) profit.
Well, as of this moment, I don't know if it is junk or not... From the sound of it, the Kipon performs somewhat less than would be desired.
Maybe later this summer, I'll see about getting one from a place I can return it and test it out (the Metabones version) with all my Hasselblad lenses. I have a bunch, from 50mm up to 250mm.
Too bad there isn't an adapter made for the SWC... hahahaha. I have that as well.
So I tried the canon 100-400 II and compared it to the fuji 100-200 with a few quick shots in the back yard completely unscientific and found the vignette with the canon back plastic piece removed completely usable. Comparing them at 100 & 200 I think the canon is sharper. The canon weighs more than 500 grams over the fuji but if you need a longer lens I think the canon is tough to beat out to 400.
what best from canon zoom for Zoo photos, im tried only native gf 120 lens and gf50, but condition changes too fast for swaping between both lenses and carry too much. so,finally all day im use only gf120. something one zoom from 30-200mm would be better idea.
Just got a Zeiss 50/1.4 classic lens and it works great on my GFX 50s II, little to no vignette even at f1.4 if I take off the lens hood. The lens is not very sharp wide open as expected, but is stellar from f5.6 and up. It is also very small. The extreme corner is not sharp but I kind of like it that way .
