postcardcv said:I got my Kenko Pro 300 1.4x tc from an ebay seller, it was a new/boxed item and was delivered very quickly. I think I paid about £65 (including shipping), and it's been worth every penny.
senatore said:Hi Roy,
That's what I heard hence I am going for the cheaper tc.However I am worried about the quality and hope they are not a waste of money when used with my canon 400 f5.6.Anyone know?
Max.
stevo said:Please correct me if I am wrong but my Kenko pro300 1.4tc has one of the pins missing therefore it doesn`t tell the camera of the F number allowing autfocus beyond f5.6.As for the optical quality it is superb & you should get better photos with your lens as it`s a prime.
Steve(preparing to be told i`m wrong)
Hi John,JohnZ said:There is apparently a cheap Tamron 1x4 converter that works very well with that lens without the need for taping pins at all. I am not sure if this is because the pins are not there or it just does not need taping.
I know they are available from B&H in New York but they don`t offer any refund of VAT etc. I will investigate further.
Roy C said:As Paul says, I would be suprised if the cheapo Kenco does not have a negative effect on image quality. I use a Canon 1.4 tc (with the pins taped) and even with this tc I have not had many decent shots (probably my fault - I hate using a tripod!)
Hi Steve,stevo said:The TC you need is the Kenko pro300 1.4xtc this is Kenko`s top of the range model & features the missing pin allowing AF beyond f5.6 I think Warehouseexpress has them for about £140 I have one of of these & it AF`s without the need for taping the pins the optical qualiy is great.
Steve.
Just purchased this model,optically excellent and AF works fine when coupled with my sigma 80-400 os,not sure if im imagining this,but the quality has seemed to improve with the TC attached,not sure if this is possible though!!stevo said:The TC you need is the Kenko pro300 1.4xtc this is Kenko`s top of the range model & features the missing pin allowing AF beyond f5.6 I think Warehouseexpress has them for about £140 I have one of of these & it AF`s without the need for taping the pins the optical qualiy is great.
Steve.
Hi Ian,IanF said:Looking down into the top of the end that fits inside the 400mm lens put the pins at 12 o'clock and it's the three far left ones you need to tape. I just used ordinary insulation tape - once in place just leave it there - it shouldn't need replacing - but if it does it comes off easily enough and doesn't leave residue.