300mm plus Lens Club: discuss your long lenses

Stavri · 03-22-2015, 10:07 AM

(apologies for assaulting your senses)

Has anyone seen an improvement in colors using the new Pentax 1.4x AW with say Sigma or Tamron zooms (like the 70-200mm f2.8, 100-300, or the 300, 500mm primes)??? I like the Ex line in terms of sharpness but when it comes to IQ its colors look regurgitated. The new Art series has improved on this front tremendously, but they're not even close to those dulcimer Pentax tones....

Last edited by Stavri; 03-22-2015 at 10:28 AM.

RockvilleBob · 03-22-2015, 10:27 AM - **1 Like**

Spring at Bombay Hook

r0ckstarr · 03-22-2015, 10:32 AM

Originally posted by Stavri

Has anyone seen an improvement in colors using the new Pentax 1.4x AW with say Sigma or Tamron zooms (like the 70-200mm f2.8, 100-300, or the 300, 500mm primes)??? I like the Ex line in terms of sharpness but when it comes to IQ its colors look regurgitated. The new Art series has improved on this front tremendously, but they're not even close to those dulcimer Pentax tones....

Not the Sigma you're looking for, but my girlfriend has the Sigma 70-300mm f/4-5.6 APO DG. I have the 1.4x AW. I've never put the 2 together, but can do some test shots to see.

Stavri · 03-22-2015, 10:36 AM

Originally posted by r0ckstarr

Not the Sigma you're looking for, but my girlfriend has the Sigma 70-300mm f/4-5.6 APO DG. I have the 1.4x AW. I've never put the 2 together, but can do some test shots to see.

That'll do great...much obliged

RockvilleBob · 03-22-2015, 11:07 AM

Couple having breakfast at Bombay Hook

normhead · 03-22-2015, 11:37 AM - **1 Like**

Originally posted by r0ckstarr

Not the Sigma you're looking for, but my girlfriend has the Sigma 70-300mm f/4-5.6 APO DG. I have the 1.4x AW. I've never put the 2 together, but can do some test shots to see.

Just a warning, the Sigma 70-300 may extend back into the glass on the 1.4 TC. My recollection is I was just real happy my TC wasn't scratched after I tried that combination. There is also a warning from Sigma not to try and use that lens with one of their TCs.

-wikstrom- · 03-22-2015, 11:57 AM - **3 Likes**

I recently received the Sigma 150-500 and finally had the opportunity to play around with it this weekend.

Great tit (Parus major)

White-throated dipper (Cinclus cinclus)

r0ckstarr · 03-22-2015, 12:05 PM

Originally posted by Stavri

That'll do great...much obliged

Originally posted by normhead

Just a warning, the Sigma 70-300 may extend back into the glass on the 1.4 TC. My recollection is I was just real happy my TC wasn't scratched after I tried that combination. There is also a warning from Sigma not to try and use that lens with one of their TCs.

Sorry, Stavri. Can't do any tests.

---------- Post added 03-22-15 at 12:06 PM ----------

Originally posted by normhead

Just a warning, the Sigma 70-300 may extend back into the glass on the 1.4 TC. My recollection is I was just real happy my TC wasn't scratched after I tried that combination. There is also a warning from Sigma not to try and use that lens with one of their TCs.

Thanks for the warning. Does it hit the TC when zooming in and out, or when focusing?

zzeitg · 03-22-2015, 12:06 PM

Originally posted by -wikstrom-

I recently received the Sigma 150-500 and finally had the opportunity to play around with it this weekend.

Great tit (Parus major)

White-throated dipper (Cinclus cinclus)

Well done, wikstrom! Have a good time with your new lens!

normhead · 03-22-2015, 01:02 PM

Originally posted by r0ckstarr

Sorry, Stavri. Can't do any tests.

---------- Post added 03-22-15 at 12:06 PM ----------

Thanks for the warning. Does it hit the TC when zooming in and out, or when focusing?

I don't know, I just remember I knew about the warning from Sigma, and as soon as the lens jammed, I took it off. I don't even remember whether is was during zooming, or focusing. It was right after I bought the TC, which was right after it was released, so a while ago.

**boriscleto** · 03-22-2015, 01:09 PM - **1 Like**

Originally posted by r0ckstarr

Sorry, Stavri. Can't do any tests.

---------- Post added 03-22-15 at 12:06 PM ----------

Thanks for the warning. Does it hit the TC when zooming in and out, or when focusing?

The Sigma TC has an element that extends into the lens. It can only be used with lenses that have a recessed rear element. I don't think this is the case with the Pentax TC.

schj · 03-22-2015, 01:14 PM

Walked around with my Meyer - Optik Gorlitz Orestegor 4/300. Shot at 5.6 and 4.0

r0ckstarr · 03-22-2015, 01:30 PM

Originally posted by boriscleto

The Sigma TC has an element that extends into the lens. It can only be used with lenses that have a recessed rear element. I don't think this is the case with the Pentax TC.

Thanks.

**marcusBMG** · 03-22-2015, 01:48 PM - **1 Like**

Picked up a Tamron-f 2x TC cheaply so was interested to see how it might work on the 31A. M42 fit, so the inconvenience of switching mounts and fitting an M42 adapter as well.

The moorhen came out ok. And the canada goose.

Crop shows the softening and increased aberrations of the full sized image.

My inclination these days is to avoid the use of a tc, mainly because I don't think the 31A is a particularly good lens to use with them due to its f5.6 max aperture and its proneness to purple fringing and coma. But this one seemed to be doing quite well. However the snipe came out better without tc (pics resized to 800px).

With tc

However when the red breasted mergansers got into a wee fracas with the great crested grebes in the middle of the lagoon it was because I had the tc on that I was able to get these pics.
Attack!

"That showed em!" "Right on bro'"

"Just ignore them" " I quite agree"

lukulele · 03-22-2015, 05:17 PM - **2 Likes**

A new backdrop and feeder visitor. A/400 tendon stretcher.

03-22-2015, 10:07 AM	#16081
Stavri Veteran Member Join Date: Aug 2014 Location: at a Bean & Leaf Photos: Albums Posts: 1,832	Looking for them Pentax colors (apologies for assaulting your senses) Has anyone seen an improvement in colors using the new Pentax 1.4x AW with say Sigma or Tamron zooms (like the 70-200mm f2.8, 100-300, or the 300, 500mm primes)??? I like the Ex line in terms of sharpness but when it comes to IQ its colors look regurgitated. The new Art series has improved on this front tremendously, but they're not even close to those dulcimer Pentax tones.... Last edited by Stavri; 03-22-2015 at 10:28 AM.

03-22-2015, 10:27 AM - 1 Like	#16082
RockvilleBob Veteran Member Join Date: Dec 2011 Location: Lewes DE USA Photos: Albums Posts: 1,780	Spring at Bombay Hook Attached Images

03-22-2015, 11:07 AM	#16085
RockvilleBob Veteran Member Join Date: Dec 2011 Location: Lewes DE USA Photos: Albums Posts: 1,780	Couple having breakfast at Bombay Hook Attached Images

03-22-2015, 12:05 PM	#16088
r0ckstarr Veteran Member Join Date: Sep 2009 Location: Texas Photos: Gallery Posts: 3,507	Originally posted by Stavri That'll do great...much obliged Originally posted by normhead Just a warning, the Sigma 70-300 may extend back into the glass on the 1.4 TC. My recollection is I was just real happy my TC wasn't scratched after I tried that combination. There is also a warning from Sigma not to try and use that lens with one of their TCs. Sorry, Stavri. Can't do any tests. ---------- Post added 03-22-15 at 12:06 PM ---------- Originally posted by normhead Just a warning, the Sigma 70-300 may extend back into the glass on the 1.4 TC. My recollection is I was just real happy my TC wasn't scratched after I tried that combination. There is also a warning from Sigma not to try and use that lens with one of their TCs. Thanks for the warning. Does it hit the TC when zooming in and out, or when focusing? Last edited by r0ckstarr; 03-22-2015 at 12:12 PM.

03-22-2015, 01:48 PM - 1 Like	#16094
marcusBMG Site Supporter Join Date: Nov 2012 Location: North Wales Photos: Gallery \| Albums Posts: 2,868	Picked up a Tamron-f 2x TC cheaply so was interested to see how it might work on the 31A. M42 fit, so the inconvenience of switching mounts and fitting an M42 adapter as well. The moorhen came out ok. And the canada goose. Crop shows the softening and increased aberrations of the full sized image. My inclination these days is to avoid the use of a tc, mainly because I don't think the 31A is a particularly good lens to use with them due to its f5.6 max aperture and its proneness to purple fringing and coma. But this one seemed to be doing quite well. However the snipe came out better without tc (pics resized to 800px). With tc However when the red breasted mergansers got into a wee fracas with the great crested grebes in the middle of the lagoon it was because I had the tc on that I was able to get these pics. Attack! "That showed em!" "Right on bro'" "Just ignore them" " I quite agree" Last edited by marcusBMG; 03-22-2015 at 04:28 PM.

03-22-2015, 10:32 AM	#16083
r0ckstarr Veteran Member Join Date: Sep 2009 Location: Texas Photos: Gallery Posts: 3,507	Originally posted by Stavri Has anyone seen an improvement in colors using the new Pentax 1.4x AW with say Sigma or Tamron zooms (like the 70-200mm f2.8, 100-300, or the 300, 500mm primes)??? I like the Ex line in terms of sharpness but when it comes to IQ its colors look regurgitated. The new Art series has improved on this front tremendously, but they're not even close to those dulcimer Pentax tones.... Not the Sigma you're looking for, but my girlfriend has the Sigma 70-300mm f/4-5.6 APO DG. I have the 1.4x AW. I've never put the 2 together, but can do some test shots to see.

03-22-2015, 10:36 AM	#16084
Stavri Veteran Member Join Date: Aug 2014 Location: at a Bean & Leaf Photos: Albums Posts: 1,832	Originally posted by r0ckstarr Not the Sigma you're looking for, but my girlfriend has the Sigma 70-300mm f/4-5.6 APO DG. I have the 1.4x AW. I've never put the 2 together, but can do some test shots to see. That'll do great...much obliged

03-22-2015, 11:37 AM - 1 Like	#16086
normhead Pentaxian Join Date: Jun 2007 Location: Near Algonquin Park Photos: Gallery \| Albums Posts: 40,451	Originally posted by r0ckstarr Not the Sigma you're looking for, but my girlfriend has the Sigma 70-300mm f/4-5.6 APO DG. I have the 1.4x AW. I've never put the 2 together, but can do some test shots to see. Just a warning, the Sigma 70-300 may extend back into the glass on the 1.4 TC. My recollection is I was just real happy my TC wasn't scratched after I tried that combination. There is also a warning from Sigma not to try and use that lens with one of their TCs.

03-22-2015, 11:57 AM - 3 Likes	#16087
-wikstrom- Forum Member Join Date: Sep 2014 Posts: 51	I recently received the Sigma 150-500 and finally had the opportunity to play around with it this weekend. Great tit (Parus major) White-throated dipper (Cinclus cinclus)

03-22-2015, 12:06 PM	#16089
zzeitg Pentaxian Join Date: Sep 2014 Location: South Bohemia Photos: Gallery \| Albums Posts: 4,017	Originally posted by -wikstrom- I recently received the Sigma 150-500 and finally had the opportunity to play around with it this weekend. Great tit (Parus major) White-throated dipper (Cinclus cinclus) Well done, wikstrom! Have a good time with your new lens!

03-22-2015, 01:02 PM	#16090
normhead Pentaxian Join Date: Jun 2007 Location: Near Algonquin Park Photos: Gallery \| Albums Posts: 40,451	Originally posted by r0ckstarr Sorry, Stavri. Can't do any tests. ---------- Post added 03-22-15 at 12:06 PM ---------- Thanks for the warning. Does it hit the TC when zooming in and out, or when focusing? I don't know, I just remember I knew about the warning from Sigma, and as soon as the lens jammed, I took it off. I don't even remember whether is was during zooming, or focusing. It was right after I bought the TC, which was right after it was released, so a while ago.

03-22-2015, 01:09 PM - 1 Like	#16091
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	Originally posted by r0ckstarr Sorry, Stavri. Can't do any tests. ---------- Post added 03-22-15 at 12:06 PM ---------- Thanks for the warning. Does it hit the TC when zooming in and out, or when focusing? The Sigma TC has an element that extends into the lens. It can only be used with lenses that have a recessed rear element. I don't think this is the case with the Pentax TC.

03-22-2015, 01:14 PM	#16092
schj Junior Member Join Date: Jun 2011 Location: Amsterdam Photos: Gallery Posts: 43	Walked around with my Meyer - Optik Gorlitz Orestegor 4/300. Shot at 5.6 and 4.0

03-22-2015, 01:30 PM	#16093
r0ckstarr Veteran Member Join Date: Sep 2009 Location: Texas Photos: Gallery Posts: 3,507	Originally posted by boriscleto The Sigma TC has an element that extends into the lens. It can only be used with lenses that have a recessed rear element. I don't think this is the case with the Pentax TC. Thanks.

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