Fujifilm has been doing a lot of Japanese content that has to be watched via google translate. I do not recommend you give it a try and I did the best I could without reading into what is being said too much, but you can get a good idea of what both parts of this lengthy interview have to say. In short, there is a focus on size and performance with X mount that is somewhat constrained by price while GFX is pushing the upward boundaries of size and price while offering peak performance.
Fujifilm recently refreshed its f/1.4 lineup for Fujifilm’s 10th anniversary
Early lenses were not dust/drip-proof
One of the first lenses designed was the 18mm f/2 which was made to be compact and works out to about 27mm
The XF35mm f/1.4 was another lens developed for launch with high image quality and it was designed to be as small as possible too
The DC motors that were originally used for CFAF were quite loud, but the new redesigned lenses use linear motors which are quieter
The redesigned 18mm and 35mm are to be sold alongside the original 18mm and 35mm since the 18mm is a pancake and the 35mm is considered a god lens so it can’t really be taken away or replaced
The 23mm is for people that want to get closer than the 35mm or 33mm allow and it has excellent close-focus performance
Many lenses try to have it all but the 18mm, 23mm, and 33mm all perform well for all tasks
The 18mm, 23mm, and 33mm are all a little larger than the original lineup
Lens communication has improved substantially
Updated lenses should have apparent advantages and if they are larger they need to remain a tolerable size
It’s hard to improve the performance of a lens enough to replace it and update the family
Performance is now uniformly excellent across the 18mm, 23mm, and 33mm
The 16mm f/1.4 is also a beloved lens that would not be easy to replace
Optical designers must improve designs within price, performance, and size constraints
IF you don’t restrict yourself it is easy to improve optical design
Lenses should fit comfortably in your hand
Fujifilm has worked to develop a locking mechanism for free-floating elements in lenses that are powered off
Lens sealing has gotten much better
Lens hoods are designed to go on easier now
The lens’s ability to move elements effectively affects resolution and it is hard to get across to users these kinds of advancements
The 23mm is very sharp and there are aberration trade-offs as a subject moves closer to the lens that has to be balanced for sharpness
The 35mm is a god lens but the 33mm has super soft bokeh
The 18mm is a very bright and sharp lens
The lenses are designed to have even blur in front and behind a subject
Getting a light lens to AF quickly can be difficult and it is easier to do with heavier lenses sometimes
The optical design is very tricky and it is good to work with manufacturing to help hit price, performance, and size constraints
Designing for accuracy and easy of manufacturing is probably a recent change in Fujifilm’s philosophy
Even if you have a great design it doesn’t mean the factory will accept your design without it being reworked
Third parties help add diversity since not everything can be done at home
It is better to increase choice for customers
Offering a lot of glass helps to attract users
Fujifilm just cant make a bad lens or 3rd parties will capitalize on it
When Fujifilm finds out the pricing of third parties it can be painful for them to compete
It can also be a pain for 3rd parties to compete with Fujifilm’s lineup
Fujifilm is always aiming for 10 years from now
GF lenses are super high quality and other lenses will be clearer in the future thanks to GFX
GFX is about 4x the size of APS-C and even though it started at 50MP it is now above 100MP
GF lenses were designed to resolve above 100MP to make them more future proof
The 26MP of APS-C has its own unique design requirements
The size constraints of APS-C make it hard to design for more megapixels while keeping the size compact
It’s very difficult to design lenses for size constraints
There are 17 lenses in all including the 3 announced lenses for GFX
GFX still is missing a lot of glass and Fujifilm will address the gaps
Large format isn’t a large part of the market so Fujifilm was concerned about going into a bigger format sensor, but GFX has sold well
Fujifilm has to make sure GFX was designed to sell because it was a big investment of time and resources
Fujifilm is grateful they decided to go large format instead of full-frame
Originally Fujifilm thought maybe 10 lenses and later 17, but the sales and demands are pushing the growth of GFX
Fujifilm has very demanding customers
There are a lot of lenses they could do for GFX, but still working on what to prioritize
Making APS-C lenses more compact with closer focusing distances is pretty easy to do
APS-C is smaller than full-frame, but it can offer completely superior image quality to full-frame
There is more of a clear difference between APS-C and 44×33 Large format GFX which is why they went 4x the size of APS-C
Fujifilm is good at high image quality
Fujifilm tried to develop its own x transformer and they are working on a lot of film simulations now