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2x Teleconverter  
User currently offlineLugonza_2001 From Spain, joined Oct 2001, 315 posts, RR: 1
Posted (14 years 7 months 3 days 7 hours ago) and read 1808 times:

Dear Friends:

In a few days i will get a 2x converter, i have never used them, do they offer good quality? I have 2 lenses: 35-70mm, and a 100-300mm, will i be able to use the converter with both lenses?
Can you give me any tip when using the converter?

Thank you!


5 replies: All unread, jump to last
User currently offlineEGGD From United Kingdom, joined Feb 2001, 12443 posts, RR: 32
Reply 1, posted (14 years 7 months 3 days 6 hours ago) and read 1782 times:

What is the f/ stop on each of these lenses. If it is something like f/4-5.6 then at longer the quality won't be too good.

I haven't got a teleconverter so i couldn't give you any tips on how to use it.



User currently offlineStaffan From , joined Dec 1969, posts, RR:
Reply 2, posted (14 years 7 months 3 days 4 hours ago) and read 1774 times:

Hi Luis,

I had the same question a few weeks ago, I got some good answers.




User currently offlineJwenting From Netherlands, joined Apr 2001, 10213 posts, RR: 17
Reply 3, posted (14 years 7 months 3 days 4 hours ago) and read 1765 times:

I used to have a 2x TC that I used once. Expensive thing that way...
This was before the days of AF SLRs, things might have improved a bit since then, using that TC the camera would get the wrong aperture information from the lens, leaving all photos horribly underexposed.
I have since converted it to a 1" extension ring for macro work.

I wish I were flying
User currently offlineJderden777 From United States of America, joined Jan 2000, 1763 posts, RR: 25
Reply 4, posted (14 years 7 months 2 days 20 hours ago) and read 1746 times:

i have a f/4-5.6 70-300mm lens, and I was planning on getting a 1.4x converter to take to DFW with me...is this a good idea? i won't be using it all that much, just for those shots where i need a little bit more than 300mm...

jonathan d.

"my soul is in the sky" - shakespeare
User currently offlineDa fwog From United Kingdom, joined Aug 1999, 867 posts, RR: 7
Reply 5, posted (14 years 7 months 2 days 18 hours ago) and read 1737 times:

a 1.4x with an F5.6 lens isn't a BAD idea - it's going to give you a max. aperture of F8, so if you already shoot mainly at F8, then you'll have an idea what to expect, shutter speed wise. The two things to bear in mind are: 1. you'll want a faster shutter speed than you're used to because of the extra length of the lens, and 2. you will lose some quality in the image.

I wouldn't recommend to anyone using a long zoom lens with a max f.stop of F5.6 to add a 2x converter (unless you're using a Canon IS lens, and adding a Canon converter) - shooting at 600mm with a max aperture of F11 is hoping for too much!

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