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Pentax HD DA AF 1.4x AW Rear Converter : Specifications and Opinions


Pentax HD DA AF 1.4x AW Rear Converter

The Pentax HD DA AF 1.4x AW Rear Converter is a extender lens for FF and APS-C, manufactured from 2014. The average price, when it has been added to the JuzaPhoto database, is 470 €;
22 users have given it an average vote of 8.5 out of 10.


If you have used this item, you can add your vote:  

MOUNT

This lens is available with the following mounts:

Pentax: this lens is compatible with reflex fullframe and APS-C Pentax.



SpecificationsReviewsCompareBuySample Photos





 Specifications
 Lenses/Groups   4 elements in 3 groups
 Weather sealing   Yes
 Weight   126 g
 Dimensions   65 x 20 mm

 Buy

Pentax HD DA AF 1.4x AW Rear Converter, buy on Ebay Ebay

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Reviews



What do you think about this lens?


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Google Translate  The following opinions have been automatically translated with Google Translate.


avatarjunior
sent on July 18, 2023

Pros: precision, quality, AF speed, compactness

Cons: It practically has none. does his job very well

Opinion: Excellent multiplier, maintains autofocus speed with very slight delay, qualitatively it loses almost nothing, indeed the 150-450 even improves. I have 2 ...., since one is now fixed on 150-450, the other I use it with 300 f / 4.5, the old blender that still has an enviable yield. Superrecommended. It costs less than the competition. Too bad they never did a 2x autofocus....

avatarjunior
sent on April 08, 2019

Pros: Robust construction, optical quality, is tropicalized

Cons: Not compatible with full frame, price from new, tends to unbalance the camera

Opinion: Bought second-hand, after some generic tests for the fine adjustment of the autofocus, I immediately imposed the "baptism of fire" at the Monza racetrack, and I must say that I was very impressed. Used on the 60-250 mm f/4 and 300 mm f/4 and grafted on the K3-II, I did not detect substantial decreases in sharpness of both lenses, and a near total absence of chromatic aberrations, except on extreme contrasts. More complex is the talk of autofocus. Taking note of the note slowness of the first generation of the SDM, with the addition of the multiplier does not slow down much, but obviously struggles a little more to keep the subjects in focus fast moving, both for the obvious decrease in brightness of the lens (1 stop), and for the equally obvious decrease in the depth of field, so it takes a little more expertise. Stretching the optics to which it is paired, it tends to unbalance forward the whole set, especially with the 60-250 zoom, which at maximum focal becomes challenging enough to wield, and it is highly advisable at least the monopod. Attention, it is not compatible with the full frame format of the K1. If you use paired with 200 f/2.8 and 300 f/4 you must set the APS-C cropping mode, otherwise it vignettes heavily. Anyway it's a well-made accessory. Having bought it used I can not criticize the price, but from new it should cost about fifty euros less to align with the most qualified competition. Full rating 8

avatarsupporter
sent on February 27, 2016

Pros: Construction, tropicalization

Cons: Price

Opinion: Purchased in 2014, the use of the shed on the 300 / f4. I really needed it, so I brought the focus to 420 mm. I would have preferred that Pentax did a 2x, but you can not have everything in life. The first time I put on my k20d with 300 / f4 I was shocked. All made shots were overexposed. I immediately thought of the rip-off, very high cost of 1.4x and a lack of results I expected. usually shot with iris mode, I started to do various experiments until I realized that its use was linked to under-exposure by one stop. It is now a year and a half that I use with great results. My photos in the blog can prove.

avatarsenior
sent on October 31, 2015

Pros: Construction of excellent workmanship and materials.

Cons: Price a bit 'high

Opinion: I purchased it for use with the 60-250mm. Before using it I did the firmware upgrade as suggested by Pentax and sharpness seems buona.rnL'ho also tried the 70mm f / 2.4 fixed that maintains excellent nitidezza.rnVolevo add that you can also adjust the duplicator the fine focus, which I did with both 70mm and with the 60-250mm and the adjustment is memorized for each objective that is coupled to this multiplier. So I think the Pentax has done a great job. Especially considering the fact that for autofocus is provided for both the operation with the engine optics or through the PTO of the reflex. The camera automatically recognizes and selects the AF faster depending on the perspective utilizzata.rnNota painful price that I think is higher by at least 50 euro to the concorrenza.rn

user2112
avatarsenior
sent on January 15, 2015

Pros: I have not found

Cons: yield very little, chromatic aberrations, slowing AF

Opinion: bought and sold in a few days. Coupled with Pentax DA * 300/4 the quality of the shots is obtained embarrassing, both TA that closing stop of 1-2; AF slows noticeably becoming very inaccurate in light conditions good / excellent. Introduces heavy chromatic aberrations. I would not complain of the price ... if only it had been used.




Photos taken with Pentax HD DA AF 1.4x AW Rear Converter

Foto
Emperor of Sea of ??Stars
by Ares982
24 comments, 2773 views  
HI RES 8.7 MP

Foto
Kingfisher
by Lucaben
17 comments, 3188 views
Foto
Bittern
by Robsit
12 comments, 2355 views
Foto
Crane
by Giuseppe Taverna
21 comments, 2181 views  
HI RES 14.5 MP

Foto
Lookout buzzard
by Angelo68
15 comments, 351 views
Foto
The ford of newborns
by Giuseppe Taverna
15 comments, 1788 views  
HI RES 14.5 MP

Foto
Night Heron 2
by Conti Cristiano
9 comments, 2347 views


RCE

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Foto
Goldfinch
by Conti Cristiano
18 comments, 1957 views
Foto
Goldfinch 2
by Conti Cristiano
18 comments, 2327 views
Foto
The Tightrope Walker
by Angelo68
14 comments, 246 views
Foto
Pheasant
by Giuseppe Taverna
15 comments, 830 views
Foto
Mallard (female)
by Conti Cristiano
14 comments, 2229 views
Foto
Kingfisher
by Conti Cristiano
13 comments, 2128 views
Foto
Ciciarella
by Robsit
8 comments, 1039 views
Foto
Knight of Italy
by Robsit
15 comments, 1582 views
Foto
Crane
by Giuseppe Taverna
13 comments, 1481 views  
HI RES 14.5 MP

Foto
Warbler
by Conti Cristiano
8 comments, 1727 views
Foto
Crowded flower
by Fascione
4 comments, 928 views
Foto
Untitled Photo
by Enzo.vera
2 comments, 1099 views  
HI RES 24.1 MP

Foto
The Guardian
by Angelo68
11 comments, 262 views  
HI RES 9.6 MP

Foto
What big ears you have!
by Conti Cristiano
10 comments, 1373 views
Foto
Great Tit
by Giuseppe Taverna
14 comments, 1608 views  
HI RES 14.5 MP

Foto
They told me ... focus on the eye
by Fascione
11 comments, 851 views
Foto
Untitled Photo
by Conti Cristiano
17 comments, 1958 views
Foto
Pantana (Tringa nebularia)
by Angelo68
8 comments, 266 views
Foto
Kingfisher
by Conti Cristiano
13 comments, 1859 views
Foto
Stork
by Conti Cristiano
10 comments, 1477 views
Foto
Snipe or Legk?
by Angelo68
14 comments, 309 views  
HI RES 4.2 MP

Foto
Thoughts are just thoughts...
by Angelo68
4 comments, 265 views
Foto
Untitled Photo
by Conti Cristiano
6 comments, 805 views
Foto
Heron and Egret
by Conti Cristiano
7 comments, 1499 views
Foto
After the storm
by Conti Cristiano
12 comments, 1275 views


RCE

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Foto
Marsh harrier
by Conti Cristiano
10 comments, 1764 views
Foto
If she passes her ...
by Giuseppe Taverna
6 comments, 690 views  
HI RES 14.5 MP

Foto
Codibugnolo Posing
by Paolino1976
7 comments, 840 views  
HI RES 4.2 MP

Foto
Egret
by Conti Cristiano
16 comments, 1513 views
Foto
Unnamed
by Enrico Pagella
5 comments, 252 views  
HI RES 17.4 MP


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