DPReview.com is closing April 10th - Find out more

An attempt to solve the price/focal length dilemma: Metabones T Smart adapter + Canon 70-300mm IS II

Started Jun 5, 2018 | Discussions thread
ReflectorL Junior Member • Posts: 27
Re: An attempt to solve the price/focal length dilemma: Metabones T Smart adapter + Canon 70-300 II
2

C-AF does "work" with this lens, at least it does on my Speedbooster Ultra. However, what I have noticed is the lens tends to backfocus to a certain degree when zoomed out. S-AF+MF does a CDAF stepping motion.

I find that image quality when using it as a 50-210mm f/2.8-4 is excellent, I generally don't post on DPR but I have a collection of images hosted on mu-43.com that I'll include some here. However they're limited to 1600 on the largest dimension due to the software used over there and I have not updated that collection in a while.

The Kenko Pro 300 1.4x teleconverter does indeed work for "neutralizing" the Speedbooster Ultra out, for anyone looking at getting a similar focal length.

I have noticed one particularly interesting behavior with the Canon 70-300 II: It works better on CDAF bodies. To the point I mistake it for a native lens when I mount it on the E-M5. It could be that the NanoUSM motor is optimized for CDAF motion and the Speedbooster Ultra+E-M1II combo drives it like a PDAF lens.

A fun combination on the 50-210mm f/2.8-4 end. Lightweight and sharp on the long end. Also refurbished these go for a lot less than the PanLeica.

It won't take a protrusive teleconverter due to the rear element unfortunately. At least it plays well with my Kenko Pro 300 1.4x

No EXIF but should be at 300mm f/5.6-6.3

No EXIF but should be at 300mm f/5.6-6.3

EXIF included in this one.

100% of the previous.

Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow