EF 100-400 mark I viability on EOS R7

[conor0460]

Hi, I own the r7 and use it mai ly for wildlife with the rf 100-400. I would sell the RF if i got a chance to buy the EF mark ii (for the extra stop) but cant get a hold of it for more than a year now. Now i got an offer for the EF mark I basicaly new for 600 euros. Im wondering if its even viable on the r7 being such and old lens, does anybody have any experience with it on the r7? Thanks in advance.

[March411]

Hey conor,

Any EF lens will work but the real question is how well.

If you do some research you will find that it is reported that many users have found the autofocus performance of the EF 100-400mm Mark I to be slower or less reliable on the R7. Most suggest the performance is much improved with the EF 100-400mm Mark II

Overall reviews on the combination report that there was autofocus and image quality issues and that the overall experience with this lens was disappointing.

If your heart is set on a 100-400mm and your budget allows you can purchase the RF 100-400mm for $650 and start building a nice collection of lenses within the MILC platform.

[ebiggs1]

If money is in short supply buying a so-so quality lens is not wise use of that limited supply of money. I wouldn't do it and I advise you to not do it either. " I own the r7 ...", so stay with RF lenses!

[March411]

conor, sorry I missed that you stated you already own the RF100-400 in your post. I need to stop skimming or read twice!

I just searched MPB Camera UK and they have 10 of the Canon EF 100-400mm f/4.5-5.6 L IS II USM in stock. They also have a couple Tamron 100-400mm f/4.5-6.3 Di VC USD - Canon EF