Timeline for Is ROHS environmental theater the reason some lenses are only available as manual focus versions?
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 12, 2019 at 15:29 | comment | added | Eric S | @MarkRansom I don’t know for sure, but a lens is more likely impacted by RoHS because the embedded electronics used lead rather than the glass. Very often with older electronics RoHS compliant components are simply not available. | |
| Feb 12, 2019 at 5:04 | comment | added | Mark Ransom | I believe when RoHS first came into effect, lenses were not exempt. That probably resulted in a few older designs being obsoleted, even if they could be brought back today. | |
| Feb 10, 2019 at 18:39 | comment | added | Eric S | Your question makes the assumption that modern lenses don't use elements such as lead. I'm not sure that is true: spie.org/membership/spie-professional-magazine/archives/… | |
| Feb 10, 2019 at 18:29 | comment | added | Eric S | If you look at the links, mostly it is about colored filters. I really doubt that regular optical glass is a problem at all. I'm relatively certain the issue with auto focus is the difficulty in reverse engineering the interface and needing to do it over and over again for each manufacturer. The relatively small return from niche markets won't cover the engineering expense. | |
| Feb 10, 2019 at 17:51 | comment | added | rackandboneman | I doubt a manufacturer in such a relatively small market would want to design relying on such exemptions being extended further... | |
| Feb 10, 2019 at 17:24 | history | edited | Eric S | CC BY-SA 4.0 |
edited body
|
| Feb 10, 2019 at 16:21 | history | answered | Eric S | CC BY-SA 4.0 |