@rawitz/Rainer also made the post above in another thread. I think that it's useful to paste @Bernice Louie's response in that thread:
Yes indeediee. Schneider phased in the 150mm SSXL to replace the 165mm f8 SA in time.
Back in the 8x10 film days, the 155mm Grandagon was the "go to" very wide angle for 8x10. Needed a center filter for color transparencies to correct for light fall off. In time the 8x10 sheet film stopped. This turned the 155mm Grandagon into a medium wide for 5x7, center filter not really needed. Keep in mind the 155mm Grandagaon is HUGE and about the same size as the 165mm f8 SA.
It was the later 1990's when Schneider announced the SSXL aspheric wide angle lenses. Decided to go for the 110mm SSXL and 150mm SSXL as a pre-order promo. Nearly a year passed before delivery. Adding to this deal, Schneider did a trade in your old view camera lens for new discount, any view camera lens was eligible for this discount. This further sweetened the deal. It was the 110mm SSXL that arrived first, good lens on 5x7, does NOT cover 8x10 and has significant light fall off. Yet, text on the web-internet continues to float the fantasy the 110mm SSXL covers 8x10 and .... This simply NOT true as the optical performance image circle dies before properly covering 8x10 and the light fall off is BAD.
The 150mm SSXL got pressed into medium wide duty for 5x7, center filter not really needed and it was about half the size of the 155mm Grandagon.
Being one of those who does not press view camera lenses past f32 and often not past f22, both SSXLs worked very good. Based on decades of experience with these two copies, Optical performance is good at f8 to f22, there after the performance begins to drop off.
In recent years, the 110mm SSXL got parked being replaced by a 115mm Grandagon or 105mm Fujinon. The 150mm SSXL still serves for medium wide 5x7 as needed, but for lug around portability the 165mm f6.8 Angulon works good enough.
Regardless of what folks say about the SSXLs, they NEED a center filter if the light fall off problem is to be corrected and the image goals demand this.
Link to Bernice's post in the other thread: https://www.largeformatphotography.i...=1#post1627053
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