p.4 #1 · Funleader to Release Lens Inspired by Leica 35/1.4 Summilux
Way back in the early part of this thread there was a question about the lens being threaded for filters. When I was ordering one today, it has a "What's in the Box" and it mentions the lens is shipped with caps, a hood and a UV filter.
In the product photos, it shows the UV filter is held in place by the two piece lens hood. It will be interesting to see if they offer different filters in the future or if the user is able to drop in conventional filters.
p.4 #2 · Funleader to Release Lens Inspired by Leica 35/1.4 Summilux
madNbad wrote:
In the product photos, it shows the UV filter is held in place by the two piece lens hood. It will be interesting to see if they offer different filters in the future or if the user is able to drop in conventional filters.
p.4 #6 · Funleader to Release Lens Inspired by Leica 35/1.4 Summilux
There’s a diagram of the optical formula of the lens in the lens manual in the support section of the website and it show a 8 elements in 6 group structure contrary of the 7/5 I saw elsewhere.
It might gives some Nokton vibes to the rendering.
I find it hard for now to have an idea of the general rendering looking at the photos available.
Looks neat though.
p.4 #7 · Funleader to Release Lens Inspired by Leica 35/1.4 Summilux
Sonnar-7 wrote:
There’s a diagram of the optical formula of the lens in the lens manual in the support section of the website and it show a 8 elements in 6 group structure contrary of the 7/5 I saw elsewhere.
It might gives some Nokton vibes to the rendering.
I find it hard for now to have an idea of the general rendering looking at the photos available.
Looks neat though.
This design is actually different from both Leica and Nokton, though it’s somewhat closer to the Nokton. However, it’s missing the rear-most large element that completes the symmetry of the double Gauss design. Essentially, it’s like the Nokton without that rear element. I’m not sure what that means for resolution or rendering, but it might result in a different look...still with a vintage vibe, though, for sure.
p.4 #8 · Funleader to Release Lens Inspired by Leica 35/1.4 Summilux
Fred Miranda wrote:
This design is actually different from both Leica and Nokton, though it’s somewhat closer to the Nokton. However, it’s missing the rear-most large element that completes the symmetry of the double Gauss design. Essentially, it’s like the Nokton without that rear element. I’m not sure what that means for resolution or rendering, but it might result in a different look...still with a vintage vibe, though, for sure.
The diagram of the Lens manual shows a eighth element making the optical formula Closer to the Nokton.
p.4 #10 · Funleader to Release Lens Inspired by Leica 35/1.4 Summilux
It's kinda strange that a company would release a drawing of their product (like the one Fred posted above) and it is probably not correct (and then contradicted by an updated drawing in their manual that shows a more logical design)?
I know we all make mistakes, but is no one checking this stuff before they release it?
p.4 #12 · Funleader to Release Lens Inspired by Leica 35/1.4 Summilux
Fred Miranda wrote:
Can you post that design? I was going by their own press release.
It’s in the pdf of the instruction manual of the lens, I just had a tablet these last few days, I’ll try to post the diagram. It’s from their website, I don’t think they would mind.
p.4 #13 · Funleader to Release Lens Inspired by Leica 35/1.4 Summilux
_jim_ wrote:
It's kinda strange that a company would release a drawing of their product (like the one Fred posted above) and it is probably not correct (and then contradicted by an updated drawing in their manual that shows a more logical design)?
I know we all make mistakes, but is no one checking this stuff before they release it?
Here ya go. This was taken from their product manual download.
Again, why was their marketing material wrong? It's not like designing and manufacturing a lens (even if much of it is borrowed) is an easy task. Kinda feels disrespectful to the engineers and technicians that actually craft it. Just, ya know, have someone from the marketing department show their work to a product manager, before publishing.
Here ya go. This was taken from their product manual download.
Again, why was their marketing material wrong? It's not like designing and manufacturing a lens (even if much of it is borrowed) is an easy task. Kinda feels disrespectful to the engineers and technicians that actually craft it. Just, ya know, have someone from the marketing department show their work to a product manager, before publishing.
Reminds me of the first 7Artisans 35/2 being a near identical copy to the 35/2.5 Color-Skopar...Show more →
Thanks for sharing, Jim! That optical design makes a lot more sense, and it’s unmistakably a Nokton at heart! , but with better-corrected, high-refractive-index or special glass, which might contribute to even less glow. The Nokton's specular highlights appear more rounded compared to the original 35mm f/1.4 Summilux, so it's not surprising that the Funleader exhibits a similar characteristic in the side by side examples I saw in the video above.
p.4 #16 · Funleader to Release Lens Inspired by Leica 35/1.4 Summilux
Fred Miranda wrote:
Thanks for sharing, Jim! That optical design makes a lot more sense, and it’s unmistakably a Nokton at heart! , but with better-corrected, high-refractive-index or special glass, which might contribute to even less glow. The Nokton's specular highlights appear more rounded compared to the original 35mm f/1.4 Summilux, so it's not surprising that the Funleader exhibits a similar characteristic in the side by side examples I saw in the video above.
I think the two lenses will draw differently.
But to clarify a point - both lenses feature high-refractive-index glass...Cosina even states that their Nokton features ultra-high-refractive-index glass (ULTRA!!!). Neither of them actually state what the refractive index for any of their elements are, though.
p.4 #17 · Funleader to Release Lens Inspired by Leica 35/1.4 Summilux
_jim_ wrote:
I think the two lenses will draw differently.
But to clarify a point - both lenses feature high-refractive-index glass...Cosina even states that their Nokton features ultra-high-refractive-index glass (ULTRA!!!). Neither of them actually state what the refractive index for any of their elements are, though.
They actually do. The Nokton uses special glass in the 5th element (counting from the front), which is the smaller element in diameter. On the other hand, the Funleader incorporates special glass in the 1st and 7th elements, which are much larger. I’m not sure how this translates to rendering, but it definitely will, especially when it comes to spherical correction.
p.4 #18 · Funleader to Release Lens Inspired by Leica 35/1.4 Summilux
Fred Miranda wrote:
They actually do. The Nokton uses special glass in the 5th element (counting from the front), which is the smaller element in diameter. On the other hand, the Funleader incorporates special glass in the 1st and 7th elements, which are much larger. I’m not sure how this translates to rendering, but it definitely will, especially when it comes to spherical correction.
I think there is some confusion between APD glass and high-refractive index glass. The Cosina diagram indicates that the fifth element of V2 Nokton is APD glass, they don't indicate which elements have ultra high refractive indices, though. The Funleader diagram does show which elements have high refractive indices, but does not indicate that any of the elements are APD.
How all of that will impact the image quality? I am not sure.
p.4 #19 · Funleader to Release Lens Inspired by Leica 35/1.4 Summilux
I bought one specifically for a rendering that was different from the Nokton Classic V2. I am not expecting performance like a pre ASPH Summilux but a busier bokeh and spectral highlights. I am very happy with the Nokton and at the $489 dollar price for the Funleader, it's worth the gamble.
p.4 #20 · Funleader to Release Lens Inspired by Leica 35/1.4 Summilux
_jim_ wrote:
I think there is some confusion between APD glass and high-refractive index glass. The Cosina diagram indicates that the fifth element of V2 Nokton is APD glass, they don't indicate which elements have ultra high refractive indices, though. The Funleader diagram does show which elements have high refractive indices, but does not indicate that any of the elements are APD.
How all of that will impact the image quality? I am not sure.
I'm loosely referring to "special glass" more than the type of glass but the original Leica lenses also featured special glass, at least for their time. After 1966, the Summilux v2 had three elements replaced with LaF21 (Lanthanum), which were previously marked as 'LeT29'. Many believe that the initial runs of the pre-asph v2 offers higher optical quality compared to the original Steel Rim because of that. However, it’s unclear how much the glass formulation changed over the course of its 30-year run.
Lanthanum glass has a higher refractive index compared to the glass previously used and is known for its ability to bend light more efficiently due to its higher refractive index, which can help in reducing CA and improving the overall resolution and contrast. It also allows correction of distortions better, as well as SA and axial CA.
The lens is incredibly compact for a 35mm f/1.4, and the designers at Leica Elcan found it challenging to improve it. Cosina attempted to enhance it using modern glass technology and design software. The result is the Nokton, which offers similar rendering but with better correction for many 'imperfections' except for distortion which is actually higher. As for the Funleader, it's still a bit of a mystery.
, but with better-corrected, high-refractive-index or special glass, which might contribute to even less glow. The Nokton's specular highlights appear more rounded compared to the original 35mm f/1.4 Summilux, so it's not surprising that the Funleader exhibits a similar characteristic in the side by side examples I saw in the video above.