07-18-2011, 07:51 AM
(This post was last modified: 07-18-2011, 07:57 AM by Brightcolours.)
[quote name='Frank' timestamp='1310973543' post='10114']
Thank you for your advices. I also searched the website a few minutes ago, it seems all suggest to use the Kenko Pro300 1.4. By the way, what is the real focal length at 200mm of the 80-200? If it is something like 180mm then with a 1.4 TC I will only get a 250mm FL. I hesitate to buy a Kenko 2.0 since many people say the loss of resolution is a bit serious, especially wide open and at the border.
Frank
[/quote]
I don't know what the real focal length is, but it is similar to other 200mm lenses. Probably in the mid 190's. Other 200mm lenses will not give you more reach, basically... so for all intends and purposes, it is 200mm.
I know that most suggest the Pro 300, because it is more expensive. But the cheaper one does perform similar. It is not like the ones who say the Pro 300 is the one to go for actually compared it with the cheaper one...
Both will do fine, basically.
Like I mentioned before, the Soligor 1.7x TC is a nice inbetween option. If you still find one, you might want to get it (very affordable), to complement the 1.4x when extra reach is wanted.
The aperture of the whole optical system goes down one stop with the 1.4x TCs (so, f2.8 -> f4), 2 stops with 2x TCs (2.8 -> 5.6) and 1.5 stops with the 1.7x TC.
By the way, here is comparative test of TC's, note that the 1.5x MC DG from Kenko is in fact an 1.4x TC, and similar to the cheaper 1.4x TC DGX they are selling now. Confusing, I know <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' />...
Thank you for your advices. I also searched the website a few minutes ago, it seems all suggest to use the Kenko Pro300 1.4. By the way, what is the real focal length at 200mm of the 80-200? If it is something like 180mm then with a 1.4 TC I will only get a 250mm FL. I hesitate to buy a Kenko 2.0 since many people say the loss of resolution is a bit serious, especially wide open and at the border.
Frank
[/quote]
I don't know what the real focal length is, but it is similar to other 200mm lenses. Probably in the mid 190's. Other 200mm lenses will not give you more reach, basically... so for all intends and purposes, it is 200mm.
I know that most suggest the Pro 300, because it is more expensive. But the cheaper one does perform similar. It is not like the ones who say the Pro 300 is the one to go for actually compared it with the cheaper one...
Both will do fine, basically.
Like I mentioned before, the Soligor 1.7x TC is a nice inbetween option. If you still find one, you might want to get it (very affordable), to complement the 1.4x when extra reach is wanted.
The aperture of the whole optical system goes down one stop with the 1.4x TCs (so, f2.8 -> f4), 2 stops with 2x TCs (2.8 -> 5.6) and 1.5 stops with the 1.7x TC.
By the way, here is comparative test of TC's, note that the 1.5x MC DG from Kenko is in fact an 1.4x TC, and similar to the cheaper 1.4x TC DGX they are selling now. Confusing, I know <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' />...