My mini review of Kenko 1.5X Teleconverter


kengoh

Senior Member
Jan 23, 2004
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Singapore
#1
As we know for serious nature/birding, the minimum focal length is at least 300mm.
There are cases (eg. Sungei Buloh) that I always wish I have a longer reach. Hence I really need a teleconverter.

Getting a decent one in sg is rather hard. :sweat:
Have asked Tamron - doesn't have for Pentax mount :(
Sigma need to deposit to place order, cost abt $340+. However it will not work with AF & SDM.
Pentax 1.7x TC only available in Japan with a wide range of different prices up to $500++ :bigeyes:
Came across a used Tamron 1.4x TC once but missed the bid.
After much hunting, finally found Kenko 1.5x (support AF & SDM) brand new w/o warranty but also need to bid. ;p


For teleconverters, the higher the magnification the more light will lose out.

x2.0 will lose 2 stops of light
x1.7 will lose 1.5 stops of light
x1.5 will lose 1 stop of light
x1.4 will lose 1 stop of light

Means if I were to use the Kenko 1.5x TC on my DA*300 F4.0, it will becomes 450mm F5.6
Similarly 200mm F2.8 will effectively becomes 300mm F4.
Thus the Kenko 1.5x has a slight edge over the Tamron 1.4x (support AF & SDM) as both loses 1 stop of light but the Kenko after converted will be 450mm vs Tamron's 420mm. :lovegrin:
 

kengoh

Senior Member
Jan 23, 2004
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#2
Packing:
Comes with front/rear covers, warranty card (useless), pouch & box


Kenko 1.5X Pz-AF Teleplus SHQ Teleconverter
Size: 66mm dia, 23mm thick
Weight: 105g



Front


Rear
 

kengoh

Senior Member
Jan 23, 2004
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Singapore
#3
Below are some pics for comparison:
All shots taken with DA*300 F4.0, no post-processing, only crop & resize.


Cropped & resize
without TC


with TC


Resize
without TC


with TC
 

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kengoh

Senior Member
Jan 23, 2004
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#4
100% crop


My thoughts:
The Kenko 1.5x TC works well when there's sufficient light, if not it will hunt for a while depending how bright is the environment.

Quality wise, I feel that it will degrade a little, so If there's no necessity, I'll just shoot with my 300mm.
It is recommneded to use on fast lens with at least F4.0.
toshio127 is using on his DA55-300. Maybe toshio127 would like to share his results?

Thanks for reading.

The rest of the pics using 1.5x Kenko TC
 

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Limited

Senior Member
Apr 17, 2008
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#5
The TC you have is the SHQ version. If not wrong Kenko have at least 3~4 versions. The new and the very old one without SHQ will not work with SDM lenses. Due to the missing connector.
BTW. AF with the TC is useless most of the times.

*Pentax F1.7x is not a TC. It's an AF converter for manual lenses.
 

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fengwei

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Aug 25, 2004
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#7
Nice review, Ken. The 1.5x Kenko TC performed pretty well with your DA*300/4. It's one of the better TCs out there, quite a bit similar to the Tamron 1.4x TC (AF, 4 elements one).
 

pinholecam

Moderator
Staff member
Jul 23, 2007
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#8
Thanks for sharing.
It always takes effort to do such comparisons and write ups. :thumbsup:

So how much is the Kenko?



(btw, I think its time to do a pixel map on your camera ) ;)
 

oceanpriest

Senior Member
Apr 24, 2010
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Ghim Moh
#9
Thanks for sharing.
It always takes effort to do such comparisons and write ups. :thumbsup:

So how much is the Kenko?

(btw, I think its time to do a pixel map on your camera ) ;)
Is this the same thing? US$ 129
 

Supersimon27

Senior Member
Jan 20, 2010
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#11
Nice review bro . Can to share how much u got it and how u got it ?
 

detritus

Senior Member
Sep 12, 2009
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shootingbugs.blogspot.com
#12
Nice review bro . Can to share how much u got it and how u got it ?
one japanese guy is selling it on ebay and pentax forum... new old stock, no warranty ;) just do a search.

i've been tempted by this for a long time... powerzoom contact allows AF on SDM lenses, gate array chip ensures communication between TC, lens and camera body. :lovegrin: its one step improved from normal TC with just "A" contact to set aperture from body.

other than the pentax 1.7x, this is the other TC that's high on my shopping list.

ken is pushing me past the edge of my endurance with this thread.
 

kengoh

Senior Member
Jan 23, 2004
6,853
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Singapore
#13
The TC you have is the SHQ version. If not wrong Kenko have at least 3~4 versions. The new and the very old one without SHQ will not work with SDM lenses. Due to the missing connector.
BTW. AF with the TC is useless most of the times.

*Pentax F1.7x is not a TC. It's an AF converter for manual lenses.
I didn't know Kenko got a few version of Pentax Mount, thot it's for C/N/S brand mount?
Kenko have a series of new ver TC but sadly not available for Pentax. :(
 

kengoh

Senior Member
Jan 23, 2004
6,853
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48
Singapore
#14
Nice review, Ken. The 1.5x Kenko TC performed pretty well with your DA*300/4. It's one of the better TCs out there, quite a bit similar to the Tamron 1.4x TC (AF, 4 elements one).
Thanks Fengwei. :)
I also read Kenko is one of the better ones. The Tamron I came across is a used one & the closing bid is $300+.
Glad that I got this Kenko brand new at a much lower price. :lovegrin:
 

kengoh

Senior Member
Jan 23, 2004
6,853
43
48
Singapore
#15
Thanks for sharing.
It always takes effort to do such comparisons and write ups. :thumbsup:

So how much is the Kenko?



(btw, I think its time to do a pixel map on your camera ) ;)
I used to do PC hardware writeup/mini review last time & it was in chinese, that one more tough. :sweatsm:

I got this Kenko abt $230+ after 6 bids. :sweat:
2 bids I missed the timing, 2 bids forgot abt ending bid time, 2 bids being outbided.
Got one bid the closing price was ridiculous, US$280! :eek:
 

kengoh

Senior Member
Jan 23, 2004
6,853
43
48
Singapore
#17
Nice review bro . Can to share how much u got it and how u got it ?
Don has given u the clue. ;)

one japanese guy is selling it on ebay and pentax forum... new old stock, no warranty ;) just do a search.

i've been tempted by this for a long time... powerzoom contact allows AF on SDM lenses, gate array chip ensures communication between TC, lens and camera body. :lovegrin: its one step improved from normal TC with just "A" contact to set aperture from body.

other than the pentax 1.7x, this is the other TC that's high on my shopping list.

ken is pushing me past the edge of my endurance with this thread.
You also know the source? Or is it I PM you last time? :think:
 

detritus

Senior Member
Sep 12, 2009
2,922
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0
shootingbugs.blogspot.com
#18
Don has given u the clue. ;)

You also know the source? Or is it I PM you last time? :think:
can't remember whether you told me or i found it... its been on my ebay watchlist for quite long liao... my interest is mainly using it for macro to help me with slightly larger than 1:1 magnification.

macro lens + 1.5x TC + extension tubes :devil:
 

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