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And yet, the manufacturers manage to confound expectations. Rolleiflex TLRs, for example, don't need rapid spring-loaded diaphragm blade movements any more than RF cameras, but sometime in the mid-1950s Rollei discontinued the multi-bladed diaphragm that provided such lovely rendering of specular highlights to replace it with a 5 blader. It had to do with the shutter maker, so Rollei didn't have much of a choice, but those specular highlights were never as nice again.
I have seen many 35 mm RF lenses with fewer blades than others, but price and overall quality don't always determine blade count. Likewise, the circularity of the lens opening doesn't always determine specular rendition or bokeh. I know too little about lens design and manufacture to understand why.
😕
I have seen many 35 mm RF lenses with fewer blades than others, but price and overall quality don't always determine blade count. Likewise, the circularity of the lens opening doesn't always determine specular rendition or bokeh. I know too little about lens design and manufacture to understand why.
😕