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Questions tagged [teleconverter]

Optical devices used between camera and lens to magnify middle part of projected image, effectively turning the lens into a longer (but slower) one.

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22 votes
8 answers
14k views

How does a teleconverter affect depth of field?

I'm aware that a teleconverter will reduce the amount of light reaching the film or sensor in a camera, and as such you hear people banding around things like "With a 2x teleconverter this 300mm f/2.8 ...
Rowland Shaw's user avatar
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18 votes
3 answers
19k views

What is the difference between teleconverters and extension tubes?

I'm aware of two devices that can extend the reach of a lens: the teleconverter and the extension tubes. What else would they have in common, and where do they differ? Are there situations where one ...
Grant Palin's user avatar
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15 votes
4 answers
10k views

Does using an extender actually change the aperture of the lens?

I just bought a Canon 2X extender and I always believed that it would only result in 2 stops' loss of light and not change the aperture. However, when I tested this extender on a Canon 135mm f/2 ...
Viv's user avatar
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12 votes
4 answers
56k views

How does using a 2x teleconverter with 70-200 f/2.8 affect use?

I recently acquired the Canon EF 70-200mm f/2.8L IS II USM lens and I love it. However the other weekend I went to Heathrow to do some aviation photography. Whilst it is great for aircraft near to you,...
Mike's user avatar
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11 votes
8 answers
6k views

For greater telephoto range, should I use 70-200mm + teleconverter or a longer zoom lens?

Right now, I have a Nikon 18-200mm f/3.5-f/5.6 VR lens. I like it, but want more telephoto range and would also like to be able to use faster shutter speeds. I am interested in the 70-200mm f/2.8, but ...
Josh Goldshlag's user avatar
11 votes
3 answers
5k views

Sigma 150-600mm vs 300mm prime with extender?

Just wanted to get a few opinions since I'm a beginner. I recently purchased a Sigma 150-600mm lens, and I'm wondering if I made the wrong choice. I still have time to return or exchange. I'm ...
Lisa 951's user avatar
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11 votes
2 answers
583 views

Are there any downsides in using 2x extenders?

What are the negatives with using teleconverters?
txwikinger's user avatar
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10 votes
2 answers
3k views

What is the blue halo around objects when using a teleconverter? [duplicate]

This afternoon, I went out to take some pictures using a ZEISS Tele-Tessar T 300mm f/4 Lens, with a Tamron x2 Teleconverter adapted to a Sony alpha 6000. Unfortunately, I have been noticing an ...
Daniel López's user avatar
10 votes
3 answers
15k views

How to enable Canon AF with teleconverter?

Canon DSLR bodies prevent poor auto-focus performance by disabling it completely when the lens reports maximum aperture at chosen focal length smaller than f/5.6. This implies that some lenses will ...
Imre's user avatar
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9 votes
2 answers
2k views

Is it possible to attach two teleconverters serially?

Is it possible to get 4x focal length by attaching 2*2x teleconverters? How about a 1.4x to a 2x, for 2.8x total? I understand that the resulting lens would be slowed down proportionally as well. ...
Sahas's user avatar
  • 193
9 votes
4 answers
2k views

Co-linear dual tripod mount for huge lenses

I am about to buy a fun super-zoom mirror lens which is so long it has its own tripod mount. To protect the camera, I am wondering if there is a mount accessory which will allow for two items to be ...
SG1's user avatar
  • 258
8 votes
7 answers
2k views

Which Canon prime and teleconverters should I bring to a safari?

Currently I have the 70-300mm L lens from Canon. I would like to go on a Safari trip, and was wondering, does it make sense to pick up the ...
Bill's user avatar
  • 493
7 votes
2 answers
8k views

What are the differences between the Canon extenders?

My wife has a Canon EF 100-400 f4.5-5.6L IS USM Telephoto Zoom Lens. Price is not that important to me, but I am unsure which of the four extenders I should purchase. Canon has four extenders that I ...
Dennis's user avatar
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7 votes
2 answers
4k views

Why can only certain Canon lenses be fitted with an extender?

Is there a reason only certain lenses can be fitted with an extender? I'd really love to be able to fit the extender to some of my cheaper lenses.
Noel M's user avatar
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7 votes
2 answers
941 views

What are the drawbacks of an extender (wide or teleconverter)?

I'm asking a more general question, starting from a particular case with which I'm dealing these days: I'm considering buying a Wide Conversion Lens for my Panasonic HC-X900M camcorder (see the item ...
John Thomas's user avatar
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6 votes
4 answers
4k views

Will I not be able to AF with a 2× teleconverter?

My setup is a Canon EOS 600D with a Canon EF 70-200mm f/4 L (non-IS), and I really want to buy a 2× teleconverter (1.4× is too short). I have done a lot of research, but I can't wrap my head around ...
Tindra's user avatar
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6 votes
3 answers
4k views

Is replacing a 70-200mm Canon lens with a 135mm and extender a good idea?

In the Canon camp we are all very familiar with the range of 70-200mm lenses. I am very impressed by the 135mm f/2.0 L though. I am considering getting rid of my 70-200mm lens in favor of the 135mm ...
dpollitt's user avatar
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6 votes
3 answers
2k views

Should I get a tele-converter or a camera body with more megapixels and crop?

My current camera body is a Nikon D300 and my longest lens is the Nikon 70-200 f2.8 vrII. I'm planning a trip to Africa and I am considering buying a 2.0x teleconverter to get bit more reach. But for ...
Rene's user avatar
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5 votes
4 answers
12k views

Do teleconverters work with Macro lenses?

I read that teleconverters don't work with macro lenses. Is that true, and if yes, why? I have the Canon 100mm f/2.8L macro lens, and I felt that purchasing a 2x teleconverter would be a cheap way of ...
Pete's user avatar
  • 3,302
5 votes
2 answers
285 views

Are there adapters so I can use my lens converters on a Canon entry-level dSLR?

I have: Kenko Video Tele Converter KVC-20 II 2.0x XIT Elite series 3.7x AF telephoto lens Digital Optics Japan 0.45x Pro Definition with Macro lens Are there adapters for these which would fit my ...
Mike Heritage's user avatar
5 votes
2 answers
597 views

How do I manually focus my macro in poor lighting conditions?

I'm using my Canon 100mm f/2.8L macro handheld all the time together with a flash rig and it works wonders. Most of the time I have an Eg-S focusing screen installed as well which makes it even easier ...
David Holm's user avatar
5 votes
2 answers
967 views

Is it a good idea to stack teleconverters to shoot at the moon?

Just got a Pentax ME Super in eBay and two lenses from a friend of mine. One of the two is a 200mm Shacht prime. I have also won on eBay, 10 minutes ago, a x3 teleconverter and I was thinking if I ...
Lamberto Pedrolla's user avatar
5 votes
2 answers
3k views

Will a lens extender be helpful for wildlife photography with a 70-200mm lens and APS-C sensor?

I was planning to do some photography with wildlife and was planning to sell my Canon Mrk2 70-200mm lens. However after discussing this I've been told that it's actually a good lens for wildlife (or ...
Matthew's user avatar
  • 366
4 votes
3 answers
5k views

Canon extender 2x III with 70-200mm F4L vs 100-400mm F4.5-5.6L for wildlife shooting

Photography.SE, hello there, this is my first question, hence please pardon my inexperience of phrasing the question. I am about to go to Yosemite and Yellowstone for 3 weeks next month, and ...
user avatar
4 votes
2 answers
6k views

Can I build my own focal reducer by reversing a teleconverter?

Would it be feasible to reverse a 1.4x teleconverter's optics into a cross-system lens mount adapter & have it function as a focal reducer? For example, like this: ...
L. Rodgers's user avatar
4 votes
2 answers
1k views

What will be my aperture with a 2× teleconverter? [duplicate]

I have a Canon 60D (crop factor 1.6x) and an 85mm f1.8 prime lens. Now I want to add a 2x teleconverter and attach the 85mm lens to it. My question is: What will the effective aperture be?
Klikz's user avatar
  • 41
4 votes
2 answers
8k views

Is there a way to use an extender on a Canon EF-S lens?

I own a crop sensor body and naturally have EF-S lenses because of my budget. I am extremely happy with my 55-250 EF-S lens, but it isn't that great for nature photography. Now, I know that EF-S won'...
bmrm145's user avatar
  • 43
4 votes
1 answer
413 views

Can a teleconverter make lenses designed for a "crop" sensor cover full frame?

I have a crop lens. Can I fill a full-frame sensor adding an appropriate tele converter (focal length extender? Specifically, I have a 1/2" C-mount lens and terrible vignetting on a full frame camera. ...
igoroleg's user avatar
4 votes
4 answers
3k views

Will the Canon 5D MK II with 100-400 1:4.5-5.6 work properly with Kenko 1.4 converter?

I'm using 5D MKII body and 100-400 f/4.5-5.6 lens. I want to use a 1.4 converter; will the Kenko converter work and autofocus properly?
Ruud's user avatar
  • 41
4 votes
1 answer
820 views

Do you suggest using an extender/tele converter with a Macro lens such as Canon 100mm f2.8 macro lens?

Do you suggest using a teleconverter with a dedicated macro lens? I have tried out using a Kenko TC with canon macro lens - however I am not 100% satisfied with the "extra" magnification that I got on ...
Mouli's user avatar
  • 111
4 votes
2 answers
1k views

Is there something that is the opposite of a teleconverter?

I shoot a Nikon D80 that has a 1.5 crop factor. I'd like to find something like a .67x teleconverter so any full format lens I attach would then have their original focal length and would in theory be ...
user85350's user avatar
4 votes
3 answers
4k views

Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?

Context Putting a teleconverter on a full frame lens magnifies the center of the lens but gives more reach due to that with some drawbacks. I've rediscovered focal reducers that do the opposite, ...
unsignedzero's user avatar
  • 2,063
3 votes
2 answers
10k views

Can a Teleconverter be used to extend a Sigma 70-300mm f/4-5.6 lens?

I have a Nikon D3100, a standard 18-55mm and Sigma 70-300mm lens without IS. Is it true that a teleconverter cannot be used with my Sigma lens? Can it be used only with block lenses, or is there any ...
pradeep sekar's user avatar
3 votes
1 answer
29k views

What is a "2.2X Pro Telephoto" lens?

I am looking to enter the world of SLR cameras and learning some more about lenses. I came across a package that has a 2.2X pro Telephoto what exactly does that ...
L84's user avatar
  • 3,568
3 votes
4 answers
13k views

Are Canon extenders compatible with non-Canon lenses?

I have two APS-C (70D and 600D) bodies with Canon EF and EF-s lenses, and Sigmas, among them the Sigma 70-200 f2.8 HSM OS. I am also considering getting the new Tamron 150-600 lens, pending reviews. ...
dassouki's user avatar
  • 1,299
3 votes
2 answers
2k views

Is there a speed booster which will let me use an FX lens on a DX camera with wider focal length and aperture?

Since we have teleconverters that increase the BFD (back focal distance) of a lens and magnify the image, would it be possible to design a teleconverter that decreases the magnification and therefore ...
ejectamenta's user avatar
3 votes
4 answers
5k views

Can the Sigma TC-1401 1.4x Teleconverter be used with Canon lenses?

Essentially the inverse of this question - can a Sigma 1.4x Teleconverter (specifically the TC-1401) be used with (actual) Canon lenses, such as the EF 70-200mm f/4? By used, I mean does it mount (I ...
exterrestris's user avatar
3 votes
1 answer
1k views

How does a teleconvertor affect magnification ratio?

Here is my base: camera, lens with particular magnification ratio and teleconverter. I would like to understand if the magnification ratio will change if I use the teleconverter, compared to the ...
Romeo Ninov's user avatar
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3 votes
1 answer
888 views

How can a teleconverter allow manual focus lenses to autofocus?

I've found that some discontinued teleconverters, such as the Pentax F 1.7x AF Adapter and Nikon TC16A, enable autofocus with manual focus lenses. How is this possible? Does this system have any ...
bwDraco's user avatar
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3 votes
1 answer
4k views

How much does the Canon EF 1.4x III Extender affect image quality on an APS-C sensor?

To be more specific I am interested in buying the Canon EF 1.4x III Extender to use it on my Canon EF 70-200 f2.8L IS II USM mounted on my Canon 7D Mark II. I know that when using the extender the ...
weinde's user avatar
  • 279
3 votes
5 answers
680 views

Options to increase magnification when the minimum working distance is fixed

I work in a lab which deals with a significant amount of scientific photography. My current situation calls for an increase in magnification, however, there is a physical limit to how close the lens ...
cmv's user avatar
  • 31
3 votes
1 answer
1k views

Are there any quality 1.7x teleconverters for Canon EF mount?

I am planning to buy a Canon EF 300mm f/2.8 L IS II soon, probably in the first half of next year. I plan for it to be my wildlife and birding lens, and with the 1.4x and 2x Mark III teleconverters ...
jrista's user avatar
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3 votes
1 answer
505 views

WIll an Olympus TCON-17X teleconverter work on a Fujifilm X100 series camera?

The X100 has a 49mm thread via a AR-X100 adapter. The Olympus TCON-17X has 55mm threads, so the connection should be no problem. Has anyone tried it?
Brian's user avatar
  • 131
3 votes
1 answer
1k views

working distance in macro photography

I have Sigma 70-300mm and tamron 24-70mm lens. I want to capture dragonfly and butterflies. I am thinking to get either close-up lens (Raynox DCR 250) or extension tube (XIT Pro Series). But my ...
user1776410's user avatar
2 votes
2 answers
19k views

Can I use an Canon 2x Extender on my EF-S 18-135mm lens?

I want to get into taking more bird images, and am on a very limited budget. I am wondering if I can use the Canon 2x Extender on my Rebel T4i camera's EF-S 18-135 kit lens. If so what sort of price ...
Deborah's user avatar
  • 21
2 votes
1 answer
1k views

Are there any Teleconverters/Extenders which will work with a Canon Rebel EOS T3 and 55-250mm f/4-5.6 lens?

Are there any Teleconverters or Extenders that will work on the Rebel EOS T3, I am currently using an EFS 55-250MM 1:4-5.6 IS II lens in an area where there is a variety of interesting wildlife that I ...
jharrit's user avatar
  • 21
2 votes
2 answers
15k views

How do I choose a teleconverter for my Tamron 70-200 f2.8 and Canon camera?

I have Canon EOS 650D and Tamron 70-200 f2.8 lens. I would like to buy a teleconverter (1.4x or 2.0x) to increase the zoom, e.g., for shooting wildlife and the moon. I took a look at several ...
Alex's user avatar
  • 515
2 votes
1 answer
7k views

Can I use Wide Angle Lens converter for my existing lens Nikkor 35mm f1.8?

I have a D3100 Nikon with a 35mm f1.8 prime lens. I want to buy a wide angle lens converter to make it more like a wide angle lens. What is your advice on that? How do I know whether the lens ...
aladine's user avatar
  • 121
2 votes
1 answer
634 views

What combination of camera, teleconverter, image stacking, or sharpness increase will best improve my moon photographs?

I'm trying to improve my moon shots. I'm currently shooting it with a Canon EF100-400mm f/4.5-5.6 USM lens mounted either on a Canon 450D or a ...
Andy M's user avatar
  • 642
2 votes
2 answers
464 views

Does the attachment order of Canon teleconverters and adapters matter?

Canon EOS RP manual says that the EF - EOS R adapter should be attached to the lens first, and only then should the entire assembly be attached to the camera. I have understood that the same is true ...
juhist's user avatar
  • 6,760