Stewart K said:How’s the IQ with the f4.5?
There are a few for sale on Ebay, some from Korea and some from USA, they seem to be priced fair so just wondering if it's even a worth while purchase instead of a 400 f5.6
The IQ of the USM and not IS lenses is said to nearly equal current production lenses, although weight and MFD have been brought down considerably in the VII big whites.
The 200 f/1.8, 300 f/2.8 and 500 f/4.5 are all stellar performers, even today. Those are the only ones that I would consider, depending on price.
The 500 f/4.5 is in another league in comparison to the 400 f/5.6.
One big issue is that all of these USM, non IS lenses are no longer serviced by Canon. Being able to get them repaired anywhere is a long shot at best... an impossibility is much more realistic.
They require power to focus manually. There is no manual focus at all- the lenses are focus by wire like the 50mm f/1.0 and 85mm f/1.2 and current STM motor lenses.
You also need to AFMA the lens to the camera.
If you are OK with buying one knowing that it is most likely junk should it stop working... then do it.
Keep in mind that the VI IS big whites will also be obsoleted by Canon and no longer serviced at some point.
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