Teleconverter for Tamron 100-400 lens
Dec 11, 2018 11:10:06 #
I have the same setup as you but never considered the T/C because the lens is already slow and I figured with the T/C it would not be practical to use it in anything but bright sunlight. However, having said that, it might be worth having it on hand for these bright Az days :) It is a bit pricey though. Let us know if you buy or rent and what you think.
Grace98 wrote:
Hi Guys, I've got this lens and am thinking of getting a teleconverter to get more reach. I know you lose about two stops. If any of you who has this lens plus teleconverter, can you please let me have your thoughts with a picture or more. Thank you. Grace
Hi Guys, I've got this lens and am thinking of getting a teleconverter to get more reach. I know you lose about two stops. If any of you who has this lens plus teleconverter, can you please let me have your thoughts with a picture or more. Thank you. Grace
Dec 11, 2018 11:23:46 #
It most certainly autofocuses. Be my guest: https://www.dropbox.com/sh/9r53p2qw7rjr24w/AAC9yvnefBxwt8nN4nkACU6xa?dl=0
Grace98 wrote:
Thanks Bill. Never heard of Kenko but have just googled it and various photoshops in the UK stock them. Is it too much to ask you to PM me a photo taken at the maximum focal length? No worries if you prefer not to. I'm also presuming it will autofocus? Grace.
Dec 11, 2018 11:48:30 #
Grace98 wrote:
Hi Guys, I've got this lens and am thinking of getting a teleconverter to get more reach. I know you lose about two stops. If any of you who has this lens plus teleconverter, can you please let me have your thoughts with a picture or more. Thank you. Grace
I have one that is a 2.5x and it is working just fine, except I hardly ever use it. I am considering selling it though.
Dec 11, 2018 11:58:29 #
Incidentally, re: "taken at the maximum focal length" - I had the Tamron 100-400 at one point and although it is a fine lens I found that it lost a tad of sharpness around 350-360mm, as I think pretty much any zoom lens would. So, I would not judge the quality of the TC based at the maximum zoom of the lens.
I would first critically examine an image using just the lens, determine the best focus and only then add the TC and evaluate.
I would first critically examine an image using just the lens, determine the best focus and only then add the TC and evaluate.
Grace98 wrote:
Thanks Bill. Never heard of Kenko but have just googled it and various photoshops in the UK stock them. Is it too much to ask you to PM me a photo taken at the maximum focal length? No worries if you prefer not to. I'm also presuming it will autofocus? Grace.
Dec 11, 2018 12:26:49 #
Grace98 wrote:
Thanks for the link. I'm hoping somebody on UHH will have the same lens/camera combination (Nikon D7500) & is using a teleconverter. If else fail I'll see if I can rent one out.
I just looked it up and your D7500 will do AF at f/8.0 so if you get a 1.4x to put on the 100-400 you will have AF.
Dec 11, 2018 13:25:35 #
I was considering the same purchase, (Lens, and Converter), so contacted Tamron. -
They replied that "Some functionality would be lost by using a Teleconverter".
(I have an older Canon 60D, and will still purchase the Lens. - (Actually, a Tamron 18-400mm)
As this is a 'Crop Sensor', not a Full Frame camera, it multiplies the lenses by 1.6 times, so 400mm becomes a 600mm,
and I'll be Happy with that! - Maybe the same for you?
They replied that "Some functionality would be lost by using a Teleconverter".
(I have an older Canon 60D, and will still purchase the Lens. - (Actually, a Tamron 18-400mm)
As this is a 'Crop Sensor', not a Full Frame camera, it multiplies the lenses by 1.6 times, so 400mm becomes a 600mm,
and I'll be Happy with that! - Maybe the same for you?
Dec 11, 2018 18:16:29 #
Grace98 wrote:
Hi Guys, I've got this lens and am thinking of getting a teleconverter to get more reach. I know you lose about two stops. If any of you who has this lens plus teleconverter, can you please let me have your thoughts with a picture or more. Thank you. Grace
I do not have the lens(es) but I will tell you that an f6.3 lens will be an f9.5 lens with a 1.4X TC (1-stop). IF you have any AF, it will be POOR. It will be much better for you to maximize your image quality at 350-400mm and f8 and CROP - and if necessary - use well applied pixel enlargement software.
..
Dec 11, 2018 20:12:12 #
suntouched wrote:
I have the same setup as you but never considered the T/C because the lens is already slow and I figured with the T/C it would not be practical to use it in anything but bright sunlight. However, having said that, it might be worth having it on hand for these bright Az days :) It is a bit pricey though. Let us know if you buy or rent and what you think.
Simple solution Kenko 2x teleconverter. I just got one for my 150-500mm Tamron and it works very well.
Dec 12, 2018 06:34:03 #
TC-X14 Tamron 1.4x Tele Converter -- 6 elements in 3 groups
TC-X20 Tamron 2.0x Tele Converter -- 9 elements in 5 groups
Telephoto lenses can be excellent performers -- but adding a bunch more glass can't help
the image quality--especially on a zoom.
Hard to say which teleconverter is optically better, but the 2.0x is more expensive.
So if 560 mm is long enough for your needs, the 1.4x might be a better buy. I suppose
whether or not the imageis good enough depends on what you plan to do with it.
It's too bad that 500 mm prime telephotos are so expensive--they should be cheaper than
zooms, since they have fewer elements and are much easier to design. But the only people
who buy them are people who really need them--and it's not as if Nikon's prices were set
by supply and demand.
Tamron's 500 mm prime is a mirror lens, and Sigma doesn't make one for the Nikon
DX. Sigma's 500mm f/4 DG OS HSM telephoto for Nikon F one is over $6000---
cheaper than Nikon, but still pricey.
TC-X20 Tamron 2.0x Tele Converter -- 9 elements in 5 groups
Telephoto lenses can be excellent performers -- but adding a bunch more glass can't help
the image quality--especially on a zoom.
Hard to say which teleconverter is optically better, but the 2.0x is more expensive.
So if 560 mm is long enough for your needs, the 1.4x might be a better buy. I suppose
whether or not the imageis good enough depends on what you plan to do with it.
It's too bad that 500 mm prime telephotos are so expensive--they should be cheaper than
zooms, since they have fewer elements and are much easier to design. But the only people
who buy them are people who really need them--and it's not as if Nikon's prices were set
by supply and demand.
Tamron's 500 mm prime is a mirror lens, and Sigma doesn't make one for the Nikon
DX. Sigma's 500mm f/4 DG OS HSM telephoto for Nikon F one is over $6000---
cheaper than Nikon, but still pricey.
Dec 12, 2018 06:46:04 #
Bipod wrote:
Is this the Tamron 100-400mm F/4.5-6.3 Di VC USD l... (show quote)
This is not accurate - you can get 1.4x, 1.7x and 2x. And by far, the most popular choice is the 1.4, because it only loses 1 stop of light and typically has the least impact on image quality (about 5% loss), and still allows lenses that it is designed for - fast telepohotos, and some specific zooms like the 70-200 and the 200-400 to use autofocus with minimal impact. Though you can put a TC on a lens that is F6.3 at the longest focal length, everything goes to pot - focus acquisistion, tracking, manual focusing (viewfinder is too dark, lenses are not built for manual focus these days), and the fact that most long zooms that have a max aperture of F6.3 are often softest at the long end, makes putting a TC on one a bad idea.
Dec 12, 2018 10:41:13 #
I've only started thinking about the T/C because I'm going on a trip in June and most probably might need more reach. But there will be lots of sunshine.
You're right the Tamron teleconverters are expensive, at least here in the uk. I will be looking at renting first to see how they fare. Of course if I do rent or buy one, I will post my comments here. I don't find the Tamron 100-400 slow but I've only have one other lens, the Nikon 18-300 so maybe that is slow and I got used to it.
You're right the Tamron teleconverters are expensive, at least here in the uk. I will be looking at renting first to see how they fare. Of course if I do rent or buy one, I will post my comments here. I don't find the Tamron 100-400 slow but I've only have one other lens, the Nikon 18-300 so maybe that is slow and I got used to it.
suntouched wrote:
I have the same setup as you but never considered the T/C because the lens is already slow and I figured with the T/C it would not be practical to use it in anything but bright sunlight. However, having said that, it might be worth having it on hand for these bright Az days :) It is a bit pricey though. Let us know if you buy or rent and what you think.
Dec 12, 2018 10:43:16 #
That's very kind of you thanks. They look ok - if I had to see them I wouldn't know you used a teleconverter..Kenko are cheaper than Tamron.
WJShaheen wrote:
It most certainly autofocuses. Be my guest: https://www.dropbox.com/sh/9r53p2qw7rjr24w/AAC9yvnefBxwt8nN4nkACU6xa?dl=0
Dec 12, 2018 10:43:56 #
sonadam wrote:
I have one that is a 2.5x and it is working just fine, except I hardly ever use it. I am considering selling it though.
Dec 12, 2018 10:45:15 #
Thanks - I definitely will check to see if I can rent one first..
WJShaheen wrote:
Incidentally, re: "taken at the maximum focal length" - I had the Tamron 100-400 at one point and although it is a fine lens I found that it lost a tad of sharpness around 350-360mm, as I think pretty much any zoom lens would. So, I would not judge the quality of the TC based at the maximum zoom of the lens.
I would first critically examine an image using just the lens, determine the best focus and only then add the TC and evaluate.
I would first critically examine an image using just the lens, determine the best focus and only then add the TC and evaluate.
Dec 12, 2018 10:46:15 #
Thank you for checking...good to know as not very keen on manual focus..
robertjerl wrote:
I just looked it up and your D7500 will do AF at f/8.0 so if you get a 1.4x to put on the 100-400 you will have AF.
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