lucabutera

39 minutes ago, iamoui said:

It's pretty great, but the NX1 is not a DSLR. 

Mirrorless - sorry! :-)

Today I installed and tested the new NX-KS V2.48 Hack, in my NX1 camera. I shot in real 4k (4096x2160) 180mb/s - 25fps! No frame repeating.

This is the only Dslr can shot real 4k in 24 and 25fps!!! TNX.

17 hours ago, cisco150 said:

any update on the adaptor. thanks

Hi Cisco, I work on the crowfounding page!

8 hours ago, Pavel Mašek said:

Thank you. It would be nice to test it with same lens ;-) On bottles or even in outside in exterior.

Nikon 50mm f1.4, aperture f.2, iso 100, shutter speed 50. Original files.

7 hours ago, Pavel Mašek said:

Thank you. It would be nice to test it with same lens ;-) On bottles or even in outside in exterior.

I'm sorry FD mount it's impossible without modify the lens. For use Fd lens with focal reducer NX-L you need to remove the rear metal leverage.

3 minutes ago, Pavel Mašek said:

I can see (beside higher brightness and lower crop factor) also higher sharpness. Image with SB looks like done with different lens - so good is improvement.Very nice!

BTW what lens and aperture have you used?

Yes, I use: Canon 50mm FD 1.2 L with normal nx/fd adapter and Nikon Nikkor 50mm 1.4 AF with NX-L Turbo Boost adapter. I shot in manual mode, Iris F.2, Speed Shutter 50.

On 12/8/2016 at 3:48 PM, Pavel Mašek said:

Just try to google it http://petapixel.com/2013/01/14/metabones-announces-revolutionary-adaptor-makes-ff-lenses-faster-and-wider/ 

It is similar to your EF to NX adapter but there is optical element that change crop factor from x1.5 to (I believe) x1.1, and you got more light to sensor and shallower depth of field. There is no electronics to control aperture now. Communication between lens and body is different story/project...

I confirm. Crop factor it's x 1.1

2 hours ago, cojocaru27 said:

good point.  and @luca, any new news for the speedbooster? thx

55 minutes ago, carlic said:

This is how I understand things too. So by claming we will get from 1.8 a 1.4 lens is not correct at all. It suggests we are getting a better deal than we would with a FF to begin with.  Actually with a crop factor of 1.1 we will not even get 1.8, but rather something about f2.0. Still very good, but can be confusing for begginers. 

Tony has a great video on the subject:

For comparing iso performance, I find this a very usefull tool. By this example it supports what you said. The manufacturers often fudge with the displayed iso numbers while in fact you are shooting in 1 or 2 stops higher iso. This is why people complain on some noise on GH4 even at the native iso of 200. 
https://***URL removed***/reviews/image-comparison/fullscreen?attr18=daylight&attr13_0=canon_eos5dmkiii&attr13_1=samsung_nx1&attr15_0=raw&attr15_1=raw&attr16_0=1600&attr16_1=800&normalization=compare&widget=13&x=0.6879033935123559&y=0.7132297456677982

But yes from a crop shooter perspective, the difference would be like going from a 1.8 to a 1.4 aperture when replacing an adaptor with a booster. Off course the lens should be a FF to begin with. 

The same could be done to a FF body by adding a booster (if it exists), but you would need even bigger lenses, like the ones used on pentax medium format cameras, am I right?

This discussion is an example of how complicated a simple thing.

The speed booster increases the amount of image that is acquired by the sensor, consequently the sensor receive more light, increasing the brightness of the image of about a stop.
Everything else is relative to the type of camera you use, make a technical discourse is useless, for each shot you have to set the elements in order to get the best. A light increase is positive and always helps, rather a worsening of light is always negative.
In practice, if with your samsung nx you use a lens that has a maximum f1.4 aperture, you can use it at f2.0, getting the same light you had without the speed booster, but with better picture quality (in addition to other known benefits).
Please if you want to continue this debate (already thoroughly discussed in the Internet), open another topic, please.

7 hours ago, carlic said:

I dont get it, how can it be brighter than 1.8 on a FF?
If the adapter would have no crop factor at all, it would be just a 20mm 1.8?

By adding the booster, there is still the same amount of light entering the lens governed by the size of the front element, only the full amount reaches the sensor like it would on a full frame sensor.

NXL increase 1 stop.

Samyang announces a full frame 20mm 1.8. It with NXL it's a 24mm F1.4 WOW!!!!!! :-)))))

http://briansmith.com/samyang-announces-full-frame-20mm-f1-8-lenses/

27 minutes ago, Sten said:

that explains the poor results

poor results like this... (shot with Canon 8-15mm L).

35 minutes ago, Sten said:

What is the diameter of the glass/relay lens that you are using?

 

I use the old coke bottle....

1 hour ago, IKSLIM said:

PS: I'm against to have ANY variable ND filter inside because: 

1. We need a WideOpen aperture in a LowLight conditions first. 

2. All variable ND filters (and also Non variable grey filters)  i purchased (some were very expensive) ALL WEAKEN the final image. At least you are about to loose Great Colours and WB from NX1. This lesson i've learned after spent a lot of money on usless glass of this kind.

2 hours ago, IKSLIM said:

Dear lucabutera,

I do appreciate the amount of work you've done, and decided to share with you my experience with speed boosters in order to prevent you from possible future poor sales.

 

I tried a lot of Metabones. The most important part of any SpeedBooster is how well it performs when a lens set to WideOpen aperture. In two words, all Metabones work acceptable. Some have better Chromatic Aberrations and Sharpness, some performs weaker in this regard.

Also there are number of China adapters on the market, calls Novoflex (if i'm correct with the brand). They call the product NOT a SpeedBooster, but a FocalReducer. They instruct users to Stop Down attached lenses a lot (at least at F5.6-F8.0) in order to get acceptable sharp image.

 

From my experience, i would never purchase a FocalReducer. We all need WideOpen aperture. And adapter should NOT weaken lens performance when the lens set to WideOpen aperture. That is why we use big lenses and heavy systems. We need Look, Fast apertures + Clear and Sharp images.

 

I decided to share my experience with you, because it could be unfair if your sales will be lost after such a tremendous amount of work you've done.

All the best.

Ilya

Thanks Ikslim,
you're right, in your experience, but technically the "SpeedBooster" is a focal reducer.
I have always worked with full aperture lens, my tests are done all at f1.4 and maximum 2.8. it does not add distortion or loss of detail to the edges.
(From f4 forward, any bottle bottom works!).
I am a detail maniac and that's what the NX1 does best.
I have no intention of filters or iris in the adapter NXL, this is a stupid thing to do, also no one has figured large working miracles with Canon EF mount.
There is no space between the sensor and lenses, is all filled to the tenth of a millimeter from glasses!
My hope is that this adapter, can turn on a headlamp on Samsung NX camera system and resume production, so if sales go well, I'll invest my time and my money to create a smart adapter NX / EF.

Best

Agreed

4 hours ago, carlic said:

• I dont think the price is too high. Will I get one? Probably not, I dont have that kind of money to spend, since I dont use my NX1 proffesionaly.

What I am dissapointed to hear is that for the price you will be using 3D printed parts. I have had quite a few parts printed for personal projects with hobby and professional 3d printers and the quallity was always poor. The only situation that I would use printed parts is when the shape is very hard to make on a cnc machines and quallity and mechanical properties are not a priority.

• What is the actual focal reduction anyway?  
• Why is it in your opinion that metabones declares it is immpossible to make a booster for NX? 

3d printing professional is the only way for rapid prototyping. I changed at least 10 different forms. I worked on hundredths of a millimeter before finding the correct position. it is thanks to the press 3d if I could achieve a speed booster adapter for samsung nx, inside there is no space for screws or locking flanges, the support of the lenses is a unique piece interlocking. build it and was a puzzle.
You do not know the 3D printer produces turbines for aviation turboprops. you do not even know what you're talking.

follow this link: http://www.selltek.it/stampanti-3d/professionali/pro-x-300/

Today I go in a shopping centre to try others Canon lenses. This is the short video. Today I stop the prototype and I star to build a pre-series NXL adapter.

1 hour ago, Pavel Mašek said:

The best thing is that you will have one ND filter for all lenses that you will use with speedbooster no matter lens diameter. 

It would be great but question is additional price and if there is enough space to add another glass element.

Honestly - 500 bucks quite lot for me but I completely understand that price.

I do not agree! Metabones Nikon G adapters are priced at $ 479, they offer a focal reduction of 71X and can only be used with Nikon lenses.
My adapter is the only existing for Samsung NX, provides a superior reduction and can be fitted with a Canon EF mount, Nikon F / G, M39, M42, Exakta, Pentax K, C / Y, Olympus OM, Leica R , Arri PL-STD-B, T -T2 mount- Novoflex A mount.
It is built in Italy with quality materials and 3D printing technologies.
Do you still think that it is expensive?

3 hours ago, Marco Tecno said:

Well, it's not variable.

what is not variable?

19 hours ago, Pavel D Prichystal said:

Any chance to add at least variable ND like this in it to make it even more usable and versitile?

 

Why complicate your life? If you want a nd filter, just add it to the front lens.

30 minutes ago, cojocaru27 said:

just for me to understand, sorry if it was pointed out and i missed it. The speedbooster adapter is made for canon and you attach to it any other adapters that you want to use for the specific glass that you have? or the speedbooster adapter itself is so made that you can adjust it to any mount you have? can't really tell from the pictures and i am really dumb in engeeniring and stuff (art director here ) thx

 

You can use it by simply mounting adapters Canon EF / to other brands.
It will work perfectly because the adapter ring will adjust the distance of the flanges.
From Canon to Nikon and others it is possible, but not vice versa.

34 minutes ago, carlic said:

Luca, I am a mechanical engineer from Slovenia and have a lot of connections for cnc part manufacturing since I design industrial machines.
Maybe we can try to work together to possibly cut the price down even more?

I also own an NX1, and have acces to a bunch of canon glass as well.
 

 

 

Hi Carlic, thanks for your support.
The production costs are not to CNC milling cutter, but what affects, is the cost of the glass, the glass cutting and the production of printing 3d parts impossible to realize also with 5-axis milling machine.