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Forum: Pentax SLR Lens Discussion 04-28-2010, 01:04 PM  
Super Takumar - info about coating (elements and layer)
Posted By gemini
Replies: 12
Views: 2,681
question:

but itr was a single-coating lens, coating was on all elements or on some elements?
Forum: Pentax SLR Lens Discussion 04-28-2010, 01:02 PM  
Super Takumar - info about coating (elements and layer)
Posted By gemini
Replies: 12
Views: 2,681
Nesster, thanks for your opinions.
i'm finding this info because i'm curious.

your chronology can be exact:

1 - at first "Super Takumar" maybe had only single-coating

2 - then, step by step, Super Takumar had multi-coating (at first 3 layers and then 7 layers) on some elements

3 - finally "Super Takumar" had multi-coating (7 layers) on all elements, similar to "SMC Takumar"

but it is difficoult to know each transitions from a step to next step.

---

if there is people with more info, please tell me :-)
Forum: Pentax SLR Lens Discussion 04-28-2010, 10:11 AM  
Super Takumar - info about coating (elements and layer)
Posted By gemini
Replies: 12
Views: 2,681
thanks for link ...but there is not info about Super takumar! :(
Forum: Pentax SLR Lens Discussion 04-28-2010, 09:18 AM  
Super Takumar - info about coating (elements and layer)
Posted By gemini
Replies: 12
Views: 2,681
thanks for your comments, but i didn't find exact info :-(

Super-Multi-Coated Takumar has 7 layers of coating for each elements.
thi is ok? i think yes.

but Super Takumar ???
about Super Takumar where i can find info?
Forum: Pentax SLR Lens Discussion 04-28-2010, 07:25 AM  
Super Takumar - info about coating (elements and layer)
Posted By gemini
Replies: 12
Views: 2,681
no people has this info?

:-(
Forum: Pentax SLR Lens Discussion 04-28-2010, 03:07 AM  
Super Takumar - info about coating (elements and layer)
Posted By gemini
Replies: 12
Views: 2,681
where i can find exact info about coating of Super takumar?
how many elements in each lens has the coating? only the last element?
how many layers has a coating?

[i don't find info about the later seven-layer lens coating process "Super-Multi Coating"]

i hope you can help me :-)
Forum: Sold Items 04-27-2010, 03:16 AM  
For Sale - Sold: Super Takumar 50mm 1.4 (Worldwide)
Posted By gemini
Replies: 5
Views: 3,126
i'm interested. you have a message! :-)
Forum: Sold Items 03-25-2010, 02:48 AM  
Wanted - Acquired: Takumar 50mm F1.4 (m42)
Posted By gemini
Replies: 4
Views: 2,513
GoremanX you are right

sorry
Forum: Sold Items 03-11-2010, 12:46 PM  
Wanted - Acquired: Takumar 50mm F1.4 (m42)
Posted By gemini
Replies: 4
Views: 2,513
thanks, but at the moment i don't try to find still a tak 50 1.4 :-)
Forum: Sold Items 02-25-2010, 02:50 PM  
Wanted - Acquired: Takumar 50mm F1.4 (m42)
Posted By gemini
Replies: 4
Views: 2,513
Hi

i'm finding a Takumar 50mm F1.4 (m42)

have you one?

please, send me a private message.

thanks :-)
Forum: Sold Items 01-20-2010, 04:50 AM  
For Sale - Sold: Pentax K-7
Posted By gemini
Replies: 8
Views: 3,068
an UP for an excellent product and a serious forum member!
Forum: Sold Items 12-08-2009, 03:29 AM  
For Sale - Sold: Pentax DFA 50mm f2.8 Macro
Posted By gemini
Replies: 4
Views: 2,785
excellent nice lens!
Forum: Sold Items 11-23-2009, 06:29 PM  
For Sale - Sold: Excellent D FA 50mm F2.8 Macro
Posted By gemini
Replies: 6
Views: 5,000
this is a nice gem!

lovable macro lens!
Forum: Pentax SLR Lens Discussion 11-12-2009, 07:28 AM  
what is a good or bad copy of Da*16-50?
Posted By gemini
Replies: 20
Views: 7,554
about good\bad copy:

take a photo to a brickwall (at f2.8 and f5.6) and see if there is the same sharpess in right side and in left side.

if a side is sharper than another side, your lens is not good.
Forum: Sold Items 11-03-2009, 03:29 AM  
For Sale - Sold: Tomioka-Yashinon 60mm f/2.8 Macro (M42)
Posted By gemini
Replies: 13
Views: 7,167
nice lens!

another 1:1 macro in the M42 mount is Kilfitt Macro Kilar 40mm f2.8
there are 2 versions: 1:1 macro and 1:2 macro.
1:1 macro version is very rare.
Forum: Sold Items 10-26-2009, 12:43 PM  
For Sale - Sold: Sigma 170-500mm f5-6.3 APO Autofocus PKA
Posted By gemini
Replies: 7
Views: 5,598
sigma 50-500mm is better at 500mm, you know.

but then sigma 170-500mm is always very nice between 170mm - 400mm.
only between 400mm - 500mm is not the best, but it is not a real problem: it is satisfactory also at 500mm.


about me it is a very good choise:
- autofocus !
- APO lens !
- smaller the sigma 50-500mm !!
- lighter then sigma 50-500mm !!
- cheaper then sigma 50-500mm !!!!

last question: where you can find a focal range 300mm/500mm with Autofocus (...for pentax...) for 500 USD?

about me it has a very good compromise price\quality.
Forum: Pentax SLR Lens Discussion 10-24-2009, 06:57 AM  
sigma 70-200mm f2.8 - how many versions?
Posted By gemini
Replies: 11
Views: 4,648
so we can find 5 versions (only 4 for pentax):

-----------
Sigma 70-200mm f2.8 APO EX
Sigma 70-200mm f2.8 APO EX DG
Sigma 70-200mm f2.8 APO EX DG Macro
---
Sigma 70-200mm f2.8 APO EX DG Macro HSM (not avaible for pentax)
Sigma 70-200mm f2.8 APO EX DG Macro HSM II
-----------

it is right?
Forum: Pentax SLR Lens Discussion 10-24-2009, 03:41 AM  
sigma 70-200mm f2.8 - how many versions?
Posted By gemini
Replies: 11
Views: 4,648
so, all Sigma 70-200mm f2.8 are "APO" and "EX"?

are you sure?
Forum: Pentax SLR Lens Discussion 10-24-2009, 03:30 AM  
sigma 70-200mm f2.8 - how many versions?
Posted By gemini
Replies: 11
Views: 4,648
and "APO EX version"?

where is it?
Forum: Pentax SLR Lens Discussion 10-23-2009, 04:02 PM  
sigma 70-200mm f2.8 - how many versions?
Posted By gemini
Replies: 11
Views: 4,648
hi netuser :-)

i know tamron, but now i want also to have info about sigma.

if i understood, there are 5 versions:

3 with a traditonal af
2 with a hsm af

but i want to be sure...!
Forum: Pentax SLR Lens Discussion 10-23-2009, 03:51 PM  
sigma 70-200mm f2.8 - how many versions?
Posted By gemini
Replies: 11
Views: 4,648
how many versions of sigma 70-200mm f2.8 there are?

can give me a list?
Forum: Pentax SLR Lens Discussion 10-19-2009, 11:27 AM  
m42 lens
Posted By gemini
Replies: 18
Views: 4,584
very thanks for comments :-)

i like not only to buy takumar (i know a lot of info about takumr) but also other brands (not only japanese...).


other suggestions?
Forum: Pentax SLR Lens Discussion 10-15-2009, 01:31 PM  
What lens has the largest filter diameter?
Posted By gemini
Replies: 12
Views: 10,969
maybe the manual focus Tamron 300mm f2.8 (filter 112mm) ?
Forum: Pentax SLR Lens Discussion 10-15-2009, 12:59 PM  
m42 lens
Posted By gemini
Replies: 18
Views: 4,584
i want to use for... pleasure!

i will use it on a k20d.

i have also other lenses, but i can buy also similar primes (55mm and 50mm, for example)
Forum: Pentax SLR Lens Discussion 10-15-2009, 12:57 PM  
m42 lens
Posted By gemini
Replies: 18
Views: 4,584
thanks!
i know Helios 44-2 58mm. nice lens.

others?

:)
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