auto extension tube

hll · 02-05-2008, 02:37 AM

i have only found pro optic's auto extension which is 85 dolar in Amazon, Adorama....
Amazon.com: Pro Optic Auto Extension Tube Set for Pentax-KPR Mount, 3 Tubes.: Electronics
i sent e-mail to adorama whether af is available or not and i am waiting for answer.
ii couldn't find any alternative to "pro optic" which is a little expensive for me...
ii don't expect using af with 3 tubes, but i think i can use af up to 25 mm (like kenko's) if af is available like canon's pro optic extensions.
any suggestions???
thanks
halil

joelw135 · 02-05-2008, 06:36 AM

Originally posted by hll

i have only found pro optic's auto extension which is 85 dolar in Amazon, Adorama....
Amazon.com: Pro Optic Auto Extension Tube Set for Pentax-KPR Mount, 3 Tubes.: Electronics
i sent e-mail to adorama whether af is available or not and i am waiting for answer.
ii couldn't find any alternative to "pro optic" which is a little expensive for me...
ii don't expect using af with 3 tubes, but i think i can use af up to 25 mm (like kenko's) if af is available like canon's pro optic extensions.
any suggestions???
thanks
halil

Let us know if Auto Focus and exposure is available with these tubes. Adorama is sometimes very slow at answering questions.

hll · 02-05-2008, 07:51 AM

Originally posted by joelw135

Adorama is sometimes very slow at answering questions.

i hope they won't

**NaClH2O** · 02-05-2008, 10:32 AM

Kenko's Uniplus used to be available in K mount. Sometimes you can find them on eek-bay. The Kenko company site still lists them as available in K mount so I'm still hopeful that they will start to manufacture them again. Since both Tamron and Sigma are starting to make more lenses available in K mount I hope that Kenko follows suit. The Uniplus comes in both 25mm and 12mm flavors.

NaCl(been looking for an affordable one for a while)H2O

hll · 02-07-2008, 08:32 AM

i ordered pro optic extension without being informed

i will inform you as soon as i get it...
thanks
halil
i still would be very happy when one of you call adorama and ask about the item

i really worry that it won't have the function of ae!!!

hll · 02-08-2008, 10:00 AM

adorama :

It has Auto exposure !!

Many thanks !!

Gruoso also (from this forum) called them, they told same thing to him.

i hate their customer service

halil

oppositz · 05-23-2008, 12:04 AM

Sorry if this shows my ignorance, but do these work with the automatic lenses. like my sigma 17-70 or Pentax Kit lens with no aperture ring?

Why the heck doesn't Pentax make these?

Thanks,
George

hll · 05-23-2008, 12:39 AM

yes george, it does.
i use it with my 50-135, it does Auto exposure but no AF...
it is very solid, i recommend you if manual focus is ok for you.
halil

**barondla** · 05-23-2008, 05:47 AM

Guessing you will see a lot of Pentax stuff from Kenko. They now have a vested interest in Pentax. The Hoya owner and Kenko owner are brothers!
thanks
barondla

Enter POINT & SHOOT CONTEST #7 at P&S forum. Any camera except slr. Any brand. Any subject.

kasey · 08-10-2008, 08:39 AM

Originally posted by hll

yes george, it does.
i use it with my 50-135, it does Auto exposure but no AF...
it is very solid, i recommend you if manual focus is ok for you.
halil

halil, have you been happy with the pro-optics extension tube on the DA*50/135? from what you wrote they apparently allow aperture adjustment through the camera, are just manual focus, correct? thanks.

kasey

hll · 08-10-2008, 10:20 AM

yep, i am happy...
it does focus only manually.
it allows apperture adjustment (you can change the aperture on camera)
it consists of three tubes, 21mm, 31mm and 13 mm...
and it is made in Japan....
if you can't find kenko tubes, i highly recommended you....
halil

tarda · 12-19-2008, 11:50 AM

Halil merhaba;
bu ekipmani satin almayi düsünüyorum, ama yazılanlar ban bir sey ifade etmedi cunku dil bilmiyorum.
Bu kpr mount meselesi aklimi karistirdi, bizim 10 20d lere yani k mounta uymulu mudur? Arti otomatik odaklama calisiyor mu?
Umarim hala buralardasindir, selamlar..

**tranq78** · 12-19-2008, 10:33 PM

Originally posted by barondla

Guessing you will see a lot of Pentax stuff from Kenko. They now have a vested interest in Pentax. The Hoya owner and Kenko owner are brothers!

Very interesting. I recall seeing this factoid before. May I ask how you came across this piece of info? Thanks.

**barondla** · 12-20-2008, 07:11 AM

Know a rep (for many, many years) with a company that distributes kenko in the US. Company owner has plays golf with one of the brothers (maybe both). Thats how they know both brothers.
Figure that there will be more stuff made for Pentax. Hopefully.
thanks
barondla

Check out POINT & SHOOT CONTEST #13 WINNERS in P&S forum. Enter #14. Any brand camera. Enter now!

**tranq78** · 12-20-2008, 10:05 AM

Originally posted by barondla

Know a rep (for many, many years) with a company that distributes kenko in the US. Company owner has plays golf with one of the brothers (maybe both). Thats how they know both brothers.
Figure that there will be more stuff made for Pentax. Hopefully.
thanks
barondla

Thank you for this. I always knew there was a close relationship between Hoya and Kenko, and now this makes sense. It certainly puts paid to the people at DPR who keep spinning their story saying there is nothing but a distribution relationship between the 2 companies.

Back to the original topic. I have a set of the 3 Kenko extension tubes myself. Great product.

02-07-2008, 08:32 AM	#5
hll Senior Member Join Date: Apr 2007 Location: new york Photos: Gallery Posts: 297 Original Poster	i ordered pro optic extension without being informed i will inform you as soon as i get it... thanks halil i still would be very happy when one of you call adorama and ask about the item i really worry that it won't have the function of ae!!! Last edited by hll; 02-07-2008 at 09:56 AM.

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02-05-2008, 02:37 AM	#1
hll Senior Member Join Date: Apr 2007 Location: new york Photos: Gallery Posts: 297	auto extension tube i have only found pro optic's auto extension which is 85 dolar in Amazon, Adorama.... Amazon.com: Pro Optic Auto Extension Tube Set for Pentax-KPR Mount, 3 Tubes.: Electronics i sent e-mail to adorama whether af is available or not and i am waiting for answer. ii couldn't find any alternative to "pro optic" which is a little expensive for me... ii don't expect using af with 3 tubes, but i think i can use af up to 25 mm (like kenko's) if af is available like canon's pro optic extensions. any suggestions??? thanks halil

02-05-2008, 06:36 AM	#2
joelw135 Senior Member Join Date: Sep 2007 Location: Kendall Park, NJ Photos: Gallery Posts: 143	Originally posted by hll i have only found pro optic's auto extension which is 85 dolar in Amazon, Adorama.... Amazon.com: Pro Optic Auto Extension Tube Set for Pentax-KPR Mount, 3 Tubes.: Electronics i sent e-mail to adorama whether af is available or not and i am waiting for answer. ii couldn't find any alternative to "pro optic" which is a little expensive for me... ii don't expect using af with 3 tubes, but i think i can use af up to 25 mm (like kenko's) if af is available like canon's pro optic extensions. any suggestions??? thanks halil Let us know if Auto Focus and exposure is available with these tubes. Adorama is sometimes very slow at answering questions.

02-05-2008, 07:51 AM	#3
hll Senior Member Join Date: Apr 2007 Location: new york Photos: Gallery Posts: 297 Original Poster	Originally posted by joelw135 Adorama is sometimes very slow at answering questions. i hope they won't

02-05-2008, 10:32 AM	#4
NaClH2O Site Supporter Join Date: Sep 2006 Location: Bronx NY Photos: Gallery \| Albums Posts: 5,631	Kenko's Uniplus used to be available in K mount. Sometimes you can find them on eek-bay. The Kenko company site still lists them as available in K mount so I'm still hopeful that they will start to manufacture them again. Since both Tamron and Sigma are starting to make more lenses available in K mount I hope that Kenko follows suit. The Uniplus comes in both 25mm and 12mm flavors. NaCl(been looking for an affordable one for a while)H2O

02-08-2008, 10:00 AM	#6
hll Senior Member Join Date: Apr 2007 Location: new york Photos: Gallery Posts: 297 Original Poster	adorama : It has Auto exposure !! Many thanks !! Gruoso also (from this forum) called them, they told same thing to him. i hate their customer service halil

05-23-2008, 12:04 AM	#7
oppositz Junior Member Join Date: Dec 2006 Location: Camillus, NY Posts: 39	Pro-Optic Auto Extension Tubes Sorry if this shows my ignorance, but do these work with the automatic lenses. like my sigma 17-70 or Pentax Kit lens with no aperture ring? Why the heck doesn't Pentax make these? Thanks, George

05-23-2008, 12:39 AM	#8
hll Senior Member Join Date: Apr 2007 Location: new york Photos: Gallery Posts: 297 Original Poster	yes george, it does. i use it with my 50-135, it does Auto exposure but no AF... it is very solid, i recommend you if manual focus is ok for you. halil

05-23-2008, 05:47 AM	#9
barondla Site Supporter Join Date: Sep 2006 Location: midwest, United States Photos: Gallery \| Albums Posts: 5,717	Guessing you will see a lot of Pentax stuff from Kenko. They now have a vested interest in Pentax. The Hoya owner and Kenko owner are brothers! thanks barondla Enter POINT & SHOOT CONTEST #7 at P&S forum. Any camera except slr. Any brand. Any subject.

08-10-2008, 08:39 AM	#10
kasey Forum Member Join Date: Dec 2006 Location: california Posts: 75	Originally posted by hll yes george, it does. i use it with my 50-135, it does Auto exposure but no AF... it is very solid, i recommend you if manual focus is ok for you. halil halil, have you been happy with the pro-optics extension tube on the DA*50/135? from what you wrote they apparently allow aperture adjustment through the camera, are just manual focus, correct? thanks. kasey

08-10-2008, 10:20 AM	#11
hll Senior Member Join Date: Apr 2007 Location: new york Photos: Gallery Posts: 297 Original Poster	yep, i am happy... it does focus only manually. it allows apperture adjustment (you can change the aperture on camera) it consists of three tubes, 21mm, 31mm and 13 mm... and it is made in Japan.... if you can't find kenko tubes, i highly recommended you.... halil

12-19-2008, 11:50 AM	#12
tarda Inactive Account Join Date: Dec 2008 Location: turkey Posts: 1	Halil merhaba; bu ekipmani satin almayi düsünüyorum, ama yazılanlar ban bir sey ifade etmedi cunku dil bilmiyorum. Bu kpr mount meselesi aklimi karistirdi, bizim 10 20d lere yani k mounta uymulu mudur? Arti otomatik odaklama calisiyor mu? Umarim hala buralardasindir, selamlar..

12-19-2008, 10:33 PM	#13
tranq78 Site Supporter Join Date: Dec 2006 Location: Canada Photos: Gallery Posts: 1,006	Originally posted by barondla Guessing you will see a lot of Pentax stuff from Kenko. They now have a vested interest in Pentax. The Hoya owner and Kenko owner are brothers! Very interesting. I recall seeing this factoid before. May I ask how you came across this piece of info? Thanks.

12-20-2008, 07:11 AM	#14
barondla Site Supporter Join Date: Sep 2006 Location: midwest, United States Photos: Gallery \| Albums Posts: 5,717	Know a rep (for many, many years) with a company that distributes kenko in the US. Company owner has plays golf with one of the brothers (maybe both). Thats how they know both brothers. Figure that there will be more stuff made for Pentax. Hopefully. thanks barondla Check out POINT & SHOOT CONTEST #13 WINNERS in P&S forum. Enter #14. Any brand camera. Enter now!

12-20-2008, 10:05 AM	#15
tranq78 Site Supporter Join Date: Dec 2006 Location: Canada Photos: Gallery Posts: 1,006	Originally posted by barondla Know a rep (for many, many years) with a company that distributes kenko in the US. Company owner has plays golf with one of the brothers (maybe both). Thats how they know both brothers. Figure that there will be more stuff made for Pentax. Hopefully. thanks barondla Thank you for this. I always knew there was a close relationship between Hoya and Kenko, and now this makes sense. It certainly puts paid to the people at DPR who keep spinning their story saying there is nothing but a distribution relationship between the 2 companies. Back to the original topic. I have a set of the 3 Kenko extension tubes myself. Great product.