Teleconverters for Canon – everything about teleconverters

 

Teleconverters for Canon

teleconvertersteleconverters

Teleconverters

Introduction

Teleconverters are small or moderately sized optical elements with lenses in it. There are the following types: 1.4x, 1.7x, 2x, 3x. Teleconverters are like extra optical zoom elements.

We usually attach them between the lens and the camera body in the same way as we attach the lens to the camera. First we attach usually the converter on the lens, and after together on the camera as normally we attach the lens itself. As the lens will be longer higher shutter speed is needed for the sharp photo, than before. Let’s say I have a 200mm lens. I want more reach. If I attach the

1.4x converter

it will be 200*1.4=280mm

with the 1.7x will be 200*1.7=340mm

with the 2x will be 200*2=400mm

with the 3x will be 200*3=600mm

As the focal length is increasing so narrowing the field of view and will be more pixel on the distant object, which results better picture quality.

But..no meaning for using the converter for close distances, and comparing results.. why? In this case you don’t need a converter. This is not the reason converters designed for.

Try the following: make a picture with a lens without the converter of a small subject far from you, than make the same picture with a converter. Then you will see what the converter is designed for.

Or make a picture of a small detailed subject not so far from you and check if the lens with a converter gives better detail or not, than the lens itself.

There is one exception: macro, here converters can help to gain more magnification.

Teleconverters pros and cons
Pros

-having more reach
-usually cheaper than having a longer lens
-lighter than a longer lens
-versatile like zooming with converters

Cons

-reduce brightness (1.4xconverter 1 stops, 2x converter 2x stops)
-lower optical quality, reduce contrast and sharpness
-makes autofocus slower, or not usable
-darken viewfinder image below f8 not really usable

Teleconverters

Teleconverters are used to lengthen the focal length of the lens. There are different types of converters: 1,4 1,7, 2x and 3x converters (the numbers shows the multiplication factor). The teleconverter is relatively small piece of glass connected between the lens and the reflex camera body. If somebody tries to make a photo of a distant bird or animal can face the fact that the given lens magnification is not enough to tightly frame the the distant bird or animal. The teleconverters are like optical magnificators.

Some explanation about focal length:

On Aps-C format camera (canon 20d, 30d, 40d, 50d, 7d, rebels, nikon d300, d90, d3000, etc) a 200mm focal length lens has approximately 1.13m field of view from 10 meters. A 300 mm focal length lens has 0,75m from 10 meters, a 400 m lens has 0,56m field of view, a 500mm has 0,46m, a 560mm has 0,4m, a 600 mm has 0,377 m, a 800mm 0,285m from 10 meters.

How much reach we need ?

It depends what we want to shoot. The deadly combination is the small bird from a distance. It is much easier to have good results with bigger targets like deer, eagle, bigger animals.  For photograph a smaller bird with a 200mm lens, the ideal distance is about 3-4.5 m. It is possible to make pictures from 10-15m as well, but the bird going to be small (not going to be so many detail), and even focusing is not so easy, with a small viewfinder image. With a 400mm lens the distance is double 6-9mm, that is much more easy to reach. For a bigger target like roe deer for example we can make decent pictures from 30-50 m with a very good 200mm lens, from 60-100 m with a 400mm lens.

Lenses compatible with teleconverters ?

The teleconverter gives good result, and designed to work with a high quality bright prime lenses. (Like canon L primes: 200/2 L, 200/2.8 L, 300/4L, 300/2.8L, 400/5.6L, 400/2.8L, 500/4 L, 600/4 L, 800/5.6L, etc.

The teleconverters can be used with zoom lenses as well, the result depend on the lens capabilities.

The teleconverters significantly lower the picture quality. This means less sharpness, less contrast, less brightness – slower lens, worse autofocus operation,  but with a very good quality lens the result can be satisfying. If we don’t want to compromise in picture quality the other way to buy longer lenses. The end result also depend on the camera body capabilities.

The 1,4 converters lower the picture quality slightly, the 2x teleconverters lower more significantly.

The viewfinder image going to be darker in same proportion listed next, the lens going to be slower: we lose 1 stops with 1.4 converters, 2 stops with 2x converter, 3 stops with 3x converters.

Non 1 series canon cameras don’t autofocus with darker lenses than f5,6 (lens+converter attached for example f2.8lenswith 2x converter=f5.6, f5.6 lens+1,4 converter=f8 this combination won’t autofocus normally.

If the teleconverters lower picture quality why to use them ?

1. We want more reach.

2. We have not enough cash to buy a longer good quality lens, or don’t want the attached weight and bulk.

If there is any reason to use teleconverters at all are depend on several factors: financial situation, available lenses, wanted reach. I suggest to check the teleconverter before buy, for 3 reasons: avoid defective sample, make sure you like the end result, satisfied with the new field of view. If you have some of the listed primes above, it makes sense to have a converter if you want more reach.

1,4, 2 or 3x converters ?

The 1,4 converters usually a better bet. More usable in varible conditions, better sharpness, contrast, quicker focus operation. For the 2x converter needs a very good quality, bright lenses to work in good quality. My canon 200/2.8 L gives good, reasonable (not excellent) result with a 1.4 converter wide open, but with a 2x converter needs to stop down to  f4 to have good contrast, and sharpness (still the 1.4 better wide open).  With a 3x converters needs plenty of light, a tripod and preferably a bright lens to have any meaning. I think this converter is just for fun if we have enough spare money to buy one.

teleconverters

 

 

 

 

 

 

 

 

 

 

 

 

 

 

On the picture above you can see how the same picture crop looks like through different converters (target is about 50m).  I made a picture with 200mm, 280mm, 400m and 560 mm focal length. Bright sunlight, and I try to use the best aperture setting (around 4 – 4,5 on my canon 200/2.8 L) the pictures made by canon 30D camera body. On the picture it is obvious that the biggest difference is contrast, you can see which combination is which without explanation. The quality with the Kenko 1.4dgx is very good. The Soligor 2x overexposes the images with 2/3 stops.

 

When using the Canon 2x Mk II for the same test the contrast difference is not so obvious. I came out that the Soligor 2x over exposes by 2/3 stops compare the Canon 2x Mk II.

See below. Same spot, and distance 560mm,400mm,280mm, 200mm. The 200m picture has a biggest crop. Right up 560mm, left up 400mm, right down 280mm, right below200 mm. The quality at 200m is not shows lens weekness but the 8Mp sensor limitation. First I thought it is focus problem and made the shot several times, The original picture was quite sharp. Naturally the lens sharpest at 200mm.

teleconverters

 

Available converters on the market:

Canon has 1,4 and 2x converters: the are Mark I, II, and III converters.

I have using the canon 2x MkII version with my canon 200/2.8 L lens. Compare to the Soligor 2x version the autofocus performance is slow and not so precise(I tried several canon 2x MkII converters before bought mine which autofocusing a little better with the lens). Optically the canon is better especially the colours, and more sharp wide open, stopped than the Soligor is also quite good, but 2/3 stops overexposing compare to the Canon, the camera needs to adjust that way. The main thing with the 2x converter same with the canon and the soligor: the picture wide open are more soft than with the 1,4 converters (little contrast). Both need to stop down to f4 to reach really good results. Which one to choose ? If we have a budget a canon 2x Mk II for sure, but I suggest to test with the lens before buy, if we don’t have the budget the Soligor can have at half price.

Nikon has 1,4 1,7 and 2x converters

Kenko has 1,4 2x and 3x converters

Sigma also has 1,4 and 2x converters

Bottom line:First recommendation: longer good lens, always better if your budget allows, and the bigger weight and bulk not a problem.  My second recommendation 1.4 teleconverter for a good quality lens (Check before buy if you not sure). If the reach is not enough you can try the 2x as well. (Only for the very best, bright lenses (f2.8-4)).  For the 3x needs plenty of light (ISO800 at best, more ISO1600 in bright sunlight without tripod).

Photos with canon 200/2.8 L with Kenko 1.4 dgx teleconverter.

img_5190 (másolat).jpg
img_5190 (másolat).jpg
img_5193 (másolat).jpg
img_5193 (másolat).jpg
IMG_6102.JPG
IMG_6102.JPG
great crested grebe.JPG
great crested grebe.JPG
img_5185 (másolat).jpg
img_5185 (másolat).jpg
original size.jpg
original size.jpg
IMG_6065.JPG
IMG_6065.JPG
img_5915.jpg
img_5915.jpg
canon200f2.8wkenko1.4dgx.jpg
canon200f2.8wkenko1.4dgx.jpg
img_7345.jpg
img_7345.jpg
img_4313.jpg
img_4313.jpg
img_7788 (másolat).jpg
img_7788 (másolat).jpg
Black redstart Házi rozsdafarkú
Black redstart Házi rozsdafarkú
Golden oriole Sárgarigó Oriolus oriolus Der Pirol Loriot d'Europe
Golden oriole Sárgarigó Oriolus oriolus Der Pirol Loriot d'Europe
img_7896 (másolat).jpg
img_7896 (másolat).jpg
img_8904v2.jpg
img_8904v2.jpg
Purple heron Vörösgém Ardea Purpurea
Purple heron Vörösgém Ardea Purpurea
Tit chick Cinegefióka
Tit chick Cinegefióka
85 Great crested grebe Búbos vöcsök
85 Great crested grebe Búbos vöcsök
9949.jpg
9949.jpg
9950 Common sandpiper Billegetőcankó
9950 Common sandpiper Billegetőcankó
9963 leaving Buzzard induló egerész
9963 leaving Buzzard induló egerész
9977 Bee eater Gyurgyalag
9977 Bee eater Gyurgyalag
9978 Goshawk or Sparrowhawk Héja v karvaly
9978 Goshawk or Sparrowhawk Héja v karvaly
9981 Goshawk or Sparrowhawk Héja v karvaly
9981 Goshawk or Sparrowhawk Héja v karvaly
9996 img_4090 (másolat).jpg
9996 img_4090 (másolat).jpg

Photos with canon 200/2.8 L with Soligor 2x teleconverter.

Home » Reviews » Teleconverters for Canon - everything about teleconverters » Canon 200/2.8L with Soligor 2x teleconverter
img_1101_1_1.jpg
img_1101_1_1.jpg
img_0564_1_1.jpg
img_0564_1_1.jpg
Bearded tit Barkóscinege Panurus Biarmicus
Bearded tit Barkóscinege Panurus Biarmicus
Green woodpecker Zöld küllő picus viridis
Green woodpecker Zöld küllő picus viridis
Reed bunting Nádi sármány Emberiza Schoeniclus
Reed bunting Nádi sármány Emberiza Schoeniclus
Robin Vörösvegy Erithacus rubecola
Robin Vörösvegy Erithacus rubecola
Tree sparrow Mezei veréb Passer Montanus
Tree sparrow Mezei veréb Passer Montanus
Willow warbler Fitiszfüzike
Willow warbler Fitiszfüzike
Wren Ökörszem troglodytes troglodytes
Wren Ökörszem troglodytes troglodytes
Tufted duck female
Tufted duck female
little grebe.jpg
little grebe.jpg
Rabbit
Rabbit
Black woodpecker Fekete Harkály Dryocopus Martius
Black woodpecker Fekete Harkály Dryocopus Martius
Crane Daru Grus grus
Crane Daru Grus grus
Great Cormorant Kárókatona
Great Cormorant Kárókatona
Kingfisher Jégmadár Alcedo atthis
Kingfisher Jégmadár Alcedo atthis
Pochard Barátréce Aythya ferina Tefeleend Fuligule milouin
Pochard Barátréce Aythya ferina Tefeleend Fuligule milouin
Blue and Great tit Kék és széncinege
Blue and Great tit Kék és széncinege
Cormorant portrait
Cormorant portrait
img_4102.jpg
img_4102.jpg
Phasan
Phasan
Rabbit
Rabbit
Roe deer
Roe deer
Tufted duck male  Kontyos réce Aythya fuligula die Reiherente Fuligule morillon
Tufted duck male Kontyos réce Aythya fuligula die Reiherente Fuligule morillon
9935_5729.jpg
9935_5729.jpg
9987 Tits cinegék
9987 Tits cinegék
9988 Tits Cinegék
9988 Tits Cinegék
9997 Hiding rabbit rejtőzködő nyuszi
9997 Hiding rabbit rejtőzködő nyuszi

Photos with canon 200/2.8 L with Canon MkII 2x teleconverter.

400mm f5.6
400mm f5.6
9871 Long eared owl Erdei fülesbagoly Asio otus
9871 Long eared owl Erdei fülesbagoly Asio otus
9906_0936.jpg
9906_0936.jpg
9907_0910.jpg
9907_0910.jpg
9915_0291.jpg
9915_0291.jpg
9916_0196.jpg
9916_0196.jpg
9917_0176.jpg
9917_0176.jpg
detail_0134.jpg
detail_0134.jpg
f8 400mm
f8 400mm
Falco vespertinus oldshutterhand.com f8 400mm 1/2000
Falco vespertinus oldshutterhand.com f8 400mm 1/2000
img_0134 (másolat).jpg
img_0134 (másolat).jpg
img_0241.jpg
img_0241.jpg
img_0241k.jpg
img_0241k.jpg
img_0265.jpg
img_0265.jpg
img_0265crop.jpg
img_0265crop.jpg
img_0782.jpg
img_0782.jpg
img_0783.jpg
img_0783.jpg
img_0786.jpg
img_0786.jpg
img_0797.jpg
img_0797.jpg
img_0798.jpg
img_0798.jpg
img_0810.jpg
img_0810.jpg
img_0815.jpg
img_0815.jpg
img_0841.jpg
img_0841.jpg
img_2121 (másolat).jpg
img_2121 (másolat).jpg
img_2121crop100percent.jpg
img_2121crop100percent.jpg
img_2132.jpg
img_2132.jpg
img_2140 (másolat).jpg
img_2140 (másolat).jpg
img_2140.jpg
img_2140.jpg
Next »
 1 

Photos with canon 200/2.8 L kenko 1.4dgx and Soligor 2x converter (560 mm) Some photos are post processed some are not. The photos without post processing is not usable, soft, little contrast, but with good post processing with closer objects can make good pictures. Plenty of light or very high iso needed. This combination tend to over expose. The field of view is very nice.

Home » Reviews » Teleconverters for Canon - everything about teleconverters » 560 mm canon 200/2.8L with soligor2x and kenko1.4dgx converter
IMG_6680.JPG
IMG_6680.JPG
IMG_6317.JPG
IMG_6317.JPG
img_5894.jpg
img_5894.jpg
Reed warbler Nádirigó
Reed warbler Nádirigó
IMG_6720.JPG
IMG_6720.JPG
IMG_6722.JPG
IMG_6722.JPG
IMG_6749.JPG
IMG_6749.JPG
IMG_6749v2.JPG
IMG_6749v2.JPG
IMG_6306.JPG
IMG_6306.JPG
IMG_6306v2.JPG
IMG_6306v2.JPG
IMG_6565.JPG
IMG_6565.JPG
IMG_6565v2.JPG
IMG_6565v2.JPG
img_1090.jpg
img_1090.jpg
img_1378.jpg
img_1378.jpg
Yellow wagtail Sárga billegető Motacilla flava Schafstelze Bergeronnette printaniere
Yellow wagtail Sárga billegető Motacilla flava Schafstelze Bergeronnette printaniere
Red backed shrike Tövisszúró gébics Lanius collurio Neuntöter Pie-grieche échorceur
Red backed shrike Tövisszúró gébics Lanius collurio Neuntöter Pie-grieche échorceur
95 Stonechat Cigánycsuk Saxicola rubicola Schwarzkehlchen Tarier patre
95 Stonechat Cigánycsuk Saxicola rubicola Schwarzkehlchen Tarier patre
111 hunting kestrel vadászó vércse
111 hunting kestrel vadászó vércse
9946_2577.jpg
9946_2577.jpg
9955 Golden oriole Sárgarigó
9955 Golden oriole Sárgarigó
9956 Gull sirály
9956 Gull sirály
9968 Bee eater Gyurgyalag
9968 Bee eater Gyurgyalag

Photos with canon 200/2.8 L kenko 1.4dgx and Canon 2x MkII converter (560 mm). Only cropping, no sharpening. The quality is surprisingly good even wide open(f8). Plenty of light needed, preferred shutter speed 1/1600s. Autofocus operation is not perfect if not enough light, in smaller distances(up to 10-15m) the correct focus is crucial, smallest misfocus ruin the picture.

Home » Reviews » Teleconverters for Canon - everything about teleconverters » 560mm canon 200f2.8L+canon 2x MKII+Kenko 1.4 dgx
560mm f8 100pcent crop canon30D
560mm f8 100pcent crop canon30D
560mm f8 wide open 1/1600s
560mm f8 wide open 1/1600s
f8iso1000_1/3200s
f8iso1000_1/3200s
f8_125_iso800.jpg
f8_125_iso800.jpg
560mmf13iso640_1/800s
560mmf13iso640_1/800s
img_4634 (copy).jpg
img_4634 (copy).jpg
f8iso640_1/500s
f8iso640_1/500s
Misfocused shot f8 1/1000s iso 1600
Misfocused shot f8 1/1000s iso 1600
img_1694.jpg
img_1694.jpg
img_15691.jpg
img_15691.jpg
560mm_f13_iso640_1/640s
560mm_f13_iso640_1/640s
560mm_f9iso640_1/640s
560mm_f9iso640_1/640s
Green woodpecker
Green woodpecker
Örvös légykapó
Örvös légykapó
9848_8869.jpg
9848_8869.jpg
IMG_8105.JPG
IMG_8105.JPG

 

Canon 50/1.8 II with Kenko 1.4 dgx

Home » Reviews » Teleconverters for Canon - everything about teleconverters » Canon 50/1.8 II with Kenko 1.4dgx
img_6421 1.jpg
img_6421 1.jpg
img_6421 2.jpg
img_6421 2.jpg
img_1386.jpg
img_1386.jpg
img_1417.jpg
img_1417.jpg
img_1392.jpg
img_1392.jpg
img_1393.jpg
img_1393.jpg
img_1488.jpg
img_1488.jpg
img_1441.jpg
img_1441.jpg
img_0817.jpg
img_0817.jpg
img_0811.jpg
img_0811.jpg
img_1838v2.jpg
img_1838v2.jpg
img_1654 (másolat).jpg
img_1654 (másolat).jpg

Teleconverter reviews

Kenko 1.4 dgx review
Kenko Pro300 1.4 dgx review
Canon 2x MkII review
Soligor 2x converter review
Kenko 3x converter review

Fatbirder's Top 1000 Birding Websites

 Posted by at 1:04 pm