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tikkathree
Joined: 19 Jun 2010 Posts: 755 Location: Lovely Suffolk in Great Britain
Expire: 2012-12-28
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Posted: Wed Dec 29, 2010 1:28 pm Post subject: Sigma Z 135mm Pantel f/2.8 - runs to f/64! |
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tikkathree wrote:
Picked one of these up recently on E-whatsits. Early tests confirm that, like a lot of lenses, wide open isn't the way to razor sharpness, with improvements noticeable from f/4 onwards.
It's been too cold to set up comparative tests against other lenses so all I've been doing is playing with it. I can't wait for a situation in which I can test f/64.
_________________ I used to think digital was fun but then I discovered film, then I found old lenses and then, eventually I found rangefinders.
EOS 5DII, loadsalenses
Canon G9 IR conv,
MF: TLR, 645 and folders
35mm: Oly OM Pro bodies 1, 2, 3 and 4; Soviet RF kit |
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ducdao
Joined: 19 Jun 2010 Posts: 288 Location: Montreal, Canada
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Posted: Thu Dec 30, 2010 11:41 pm Post subject: |
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ducdao wrote:
Looks like a fair copy you got there. I have two copies of that lens - one in really bad shape and one in pristine condition. How much did you pay for yours if you don't mind sharing? _________________ Duc
Pentax K100D/K10D/K20D/K-x/K-7 | DA15/ 35/40/70 Limited | DA10-17 | DA14 | DA* 50-135
Takumar: 24/3.5 | 28/3.5 | 35/2 | 35/2.3 | 35/3.5 | 50/1.4 | 55/1.8 | 85/1.8 | 85/1.9 | 105f2.8 | 135/2.5 | 135/3.5 | 150/4 | 200/4 | 300/4
Pentax: K20/4 | M20/4 | M28/3.5 | K30/2.8 | K35/3.5 | M50/1.4 | M50/1.7 | K50/1.2 | K50/1.4 | K55/1.8 | A50/1.4 | M85/2 | M100/2.8 | K105/2.8 | M100/f4 | M135/3.5 | K135/2.5 | M150/4 | M200/4 | M300/4
M42: Too many to list
Stock Images
My Flickr: Sunny Skye |
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tikkathree
Joined: 19 Jun 2010 Posts: 755 Location: Lovely Suffolk in Great Britain
Expire: 2012-12-28
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Posted: Fri Dec 31, 2010 6:41 am Post subject: |
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tikkathree wrote:
ducdao wrote: |
Looks like a fair copy you got there. I have two copies of that lens - one in really bad shape and one in pristine condition. How much did you pay for yours if you don't mind sharing? |
About sixty of our UK pounds which I thought was quite enough.
How do you find the f/64 - is it just a gimmic or is it useable and useful? _________________ I used to think digital was fun but then I discovered film, then I found old lenses and then, eventually I found rangefinders.
EOS 5DII, loadsalenses
Canon G9 IR conv,
MF: TLR, 645 and folders
35mm: Oly OM Pro bodies 1, 2, 3 and 4; Soviet RF kit |
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AhamB
Joined: 22 Jun 2008 Posts: 733 Location: Germany
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Posted: Fri Dec 31, 2010 5:50 pm Post subject: |
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AhamB wrote:
tikkathree wrote: |
How do you find the f/64 - is it just a gimmic or is it useable and useful? |
Probably mostly a gimmick. Possibly useful for long exposures, if sharpness isn't important. Otherwise: there's a reason why most 135 (24x36) format lenses don't go beyond f/22. Especially on DSLR's with high pixel counts f/64 will not give you much more DOF, just more diffraction and general blur. That is the theory anyway. On my 5D have seen a slight drop in central sharpness at f/11 already, with some of my lenses. |
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ducdao
Joined: 19 Jun 2010 Posts: 288 Location: Montreal, Canada
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Posted: Sat Jan 01, 2011 11:09 am Post subject: |
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ducdao wrote:
tikkathree wrote: |
ducdao wrote: |
Looks like a fair copy you got there. I have two copies of that lens - one in really bad shape and one in pristine condition. How much did you pay for yours if you don't mind sharing? |
About sixty of our UK pounds which I thought was quite enough.
How do you find the f/64 - is it just a gimmic or is it useable and useful? |
I got the pristine one for $50 and the other one was free
f64 is a joke, looks great on the specs sheet but not really usable. I never gone beyond f22. I use both on Pentax DSLR so I had to "crazy glue" the aperture pin to make it work on my Pentax body. _________________ Duc
Pentax K100D/K10D/K20D/K-x/K-7 | DA15/ 35/40/70 Limited | DA10-17 | DA14 | DA* 50-135
Takumar: 24/3.5 | 28/3.5 | 35/2 | 35/2.3 | 35/3.5 | 50/1.4 | 55/1.8 | 85/1.8 | 85/1.9 | 105f2.8 | 135/2.5 | 135/3.5 | 150/4 | 200/4 | 300/4
Pentax: K20/4 | M20/4 | M28/3.5 | K30/2.8 | K35/3.5 | M50/1.4 | M50/1.7 | K50/1.2 | K50/1.4 | K55/1.8 | A50/1.4 | M85/2 | M100/2.8 | K105/2.8 | M100/f4 | M135/3.5 | K135/2.5 | M150/4 | M200/4 | M300/4
M42: Too many to list
Stock Images
My Flickr: Sunny Skye |
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ducdao
Joined: 19 Jun 2010 Posts: 288 Location: Montreal, Canada
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Posted: Sun Jan 02, 2011 4:03 am Post subject: |
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ducdao wrote:
Here is a quick shot at f64. As you can see it's pretty bad. I wouldn't use it unless I want to see how dirty my sensor is
100% crop
_________________ Duc
Pentax K100D/K10D/K20D/K-x/K-7 | DA15/ 35/40/70 Limited | DA10-17 | DA14 | DA* 50-135
Takumar: 24/3.5 | 28/3.5 | 35/2 | 35/2.3 | 35/3.5 | 50/1.4 | 55/1.8 | 85/1.8 | 85/1.9 | 105f2.8 | 135/2.5 | 135/3.5 | 150/4 | 200/4 | 300/4
Pentax: K20/4 | M20/4 | M28/3.5 | K30/2.8 | K35/3.5 | M50/1.4 | M50/1.7 | K50/1.2 | K50/1.4 | K55/1.8 | A50/1.4 | M85/2 | M100/2.8 | K105/2.8 | M100/f4 | M135/3.5 | K135/2.5 | M150/4 | M200/4 | M300/4
M42: Too many to list
Stock Images
My Flickr: Sunny Skye |
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tikkathree
Joined: 19 Jun 2010 Posts: 755 Location: Lovely Suffolk in Great Britain
Expire: 2012-12-28
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Posted: Sun Jan 02, 2011 7:26 am Post subject: |
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tikkathree wrote:
ducdao wrote: |
Here is a quick shot at f64. As you can see it's pretty bad. I wouldn't use it unless I want to see how dirty my sensor is
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Ewww! Thanks for that. Saves me hanging around for some sunny weather! _________________ I used to think digital was fun but then I discovered film, then I found old lenses and then, eventually I found rangefinders.
EOS 5DII, loadsalenses
Canon G9 IR conv,
MF: TLR, 645 and folders
35mm: Oly OM Pro bodies 1, 2, 3 and 4; Soviet RF kit |
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ducdao
Joined: 19 Jun 2010 Posts: 288 Location: Montreal, Canada
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Posted: Sun Jan 02, 2011 8:22 am Post subject: |
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ducdao wrote:
tikkathree wrote: |
ducdao wrote: |
Here is a quick shot at f64. As you can see it's pretty bad. I wouldn't use it unless I want to see how dirty my sensor is
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Ewww! Thanks for that. Saves me hanging around for some sunny weather! |
You're welcome IQ is pretty good from f4 till f11 though. _________________ Duc
Pentax K100D/K10D/K20D/K-x/K-7 | DA15/ 35/40/70 Limited | DA10-17 | DA14 | DA* 50-135
Takumar: 24/3.5 | 28/3.5 | 35/2 | 35/2.3 | 35/3.5 | 50/1.4 | 55/1.8 | 85/1.8 | 85/1.9 | 105f2.8 | 135/2.5 | 135/3.5 | 150/4 | 200/4 | 300/4
Pentax: K20/4 | M20/4 | M28/3.5 | K30/2.8 | K35/3.5 | M50/1.4 | M50/1.7 | K50/1.2 | K50/1.4 | K55/1.8 | A50/1.4 | M85/2 | M100/2.8 | K105/2.8 | M100/f4 | M135/3.5 | K135/2.5 | M150/4 | M200/4 | M300/4
M42: Too many to list
Stock Images
My Flickr: Sunny Skye |
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PBFACTS
Joined: 24 Dec 2008 Posts: 564
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Posted: Mon Jan 03, 2011 12:50 pm Post subject: |
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PBFACTS wrote:
ducdao wrote: |
Here is a quick shot at f64. As you can see it's pretty bad. I wouldn't use it unless I want to see how dirty my sensor is
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This is VERY poor IQ but NOT SO bad for f/64
ANY lens - even the best - at f/64 will be bad
Anyway this is just a marketing gimmick I remember the 1977/1978 ads howing a fisherman and telling that at f/64 everithing will be true from close to infinity !
because at f/64 for hand-held use you need twice the sun you needs for a 500mm f8 mirror lens ! (1/125 f64= 1/500 f16) _________________ OM USER .. I KEEP/USE:
Om2 sp + T32 (grip/filter/zoom) + T8
+ Zuiko 16mm 3.5 / 55mm 1.2 / 65-200 4/ x1.4
+ Sigma 8mm 4.0 / 14mm 3.5 / 18-35 3.5-4.5
+ Tamron 35/105 2.8
+Tokina 150/500 5.6
+ Kiron 105/2.8 macro 1:1
+ Vivitar S1 90/180 falst field macro
+ 2x Doubler HR7
>>I SELL: OM10 + OM4ti
+ i sell: OM Md1 + Md 2 + Grip PowerPack + charger
+ i sell: OM Zuiko 24mm 2.8 / 28mm 3.5 / 50mm 1.8 / 50mm 1.4 / 50mm 3.5 macro / 35-70 3.6 / 35-105 3.5-4.5 / 75-150 4 / 500mm / 2xA
+ i sell: OM Kiron 28/105 3.2-4.5 / 1.5 converter
+ i sell: OM Makinon reflex 5.6/300 + Spector reflex (makinon) 500mm
+ i sell: OM Macro panagor extender 1:1
+ i sell: OM Sigma 16mm 2.8 fisheye (last version) / 21-35 3.5-4.2 ot/ 28-70 2.8 /1000mm mirror
+ i sell: Tamron 28-70 3.5-4.5 / 28-80 sp 3.5-4.2 / 28-135 sp 4-4.5 / /28-200 3.5 / 35-135 3..5-4.5 / 90mm sp macro 1:1 2.8
+ i sell: OM Soligor 2x doubler / x3 converte
+ i sell: Soligor FisheEye x0.15
+ i sell: OM Tokina 28/135 4-4.6 / 70/210 3.5 (= vivitar S1 v2)
+ i sell: OM Vivitar 28-70 3.5-4.8 / 28-90 s1 2.8-3.5 / 35-70 2.8-3.8 / 55/2.8 Macro 1:1 (komine) / 70-150 3.8 ot (kiron) / 75-150 ot 3.8 (tokina + 2x matched)
+ i sell : OM cosina 100-500 5.6/8 |
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kawasakiguy37
Joined: 13 Jul 2010 Posts: 132
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Posted: Mon Jan 03, 2011 8:36 pm Post subject: |
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kawasakiguy37 wrote:
mind posting some more F 64 shots? Id be curious to see something with more background / foreground separation (perhaps something real close to the lens?) _________________ Nikkor
75-150 series E
105 2.0 DC
28 2.0 AIS
T-mount bellows + Spiratone 75mm Flat Field macro
300 4.0 CZJ F |
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ducdao
Joined: 19 Jun 2010 Posts: 288 Location: Montreal, Canada
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Posted: Tue Jan 04, 2011 1:52 am Post subject: |
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ducdao wrote:
kawasakiguy37 wrote: |
mind posting some more F 64 shots? Id be curious to see something with more background / foreground separation (perhaps something real close to the lens?) |
Will do, just give me couple days. Shooting at f64 requires extreme bright lightning _________________ Duc
Pentax K100D/K10D/K20D/K-x/K-7 | DA15/ 35/40/70 Limited | DA10-17 | DA14 | DA* 50-135
Takumar: 24/3.5 | 28/3.5 | 35/2 | 35/2.3 | 35/3.5 | 50/1.4 | 55/1.8 | 85/1.8 | 85/1.9 | 105f2.8 | 135/2.5 | 135/3.5 | 150/4 | 200/4 | 300/4
Pentax: K20/4 | M20/4 | M28/3.5 | K30/2.8 | K35/3.5 | M50/1.4 | M50/1.7 | K50/1.2 | K50/1.4 | K55/1.8 | A50/1.4 | M85/2 | M100/2.8 | K105/2.8 | M100/f4 | M135/3.5 | K135/2.5 | M150/4 | M200/4 | M300/4
M42: Too many to list
Stock Images
My Flickr: Sunny Skye
Last edited by ducdao on Tue Jan 04, 2011 10:29 am; edited 1 time in total |
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tikkathree
Joined: 19 Jun 2010 Posts: 755 Location: Lovely Suffolk in Great Britain
Expire: 2012-12-28
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Posted: Tue Jan 04, 2011 7:35 am Post subject: |
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tikkathree wrote:
[quote="ducdao"]
kawasakiguy37 wrote: |
Will do, just give me couple days. Shooting at f64 requires extreme bight lightning |
Which is why, in England, I don't plan to be trying f/64 any time soon! _________________ I used to think digital was fun but then I discovered film, then I found old lenses and then, eventually I found rangefinders.
EOS 5DII, loadsalenses
Canon G9 IR conv,
MF: TLR, 645 and folders
35mm: Oly OM Pro bodies 1, 2, 3 and 4; Soviet RF kit |
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ducdao
Joined: 19 Jun 2010 Posts: 288 Location: Montreal, Canada
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Posted: Sat Jan 08, 2011 3:10 am Post subject: |
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ducdao wrote:
Ok guys, as requested here are few more snaps at f64 but at closer range, approximately 1.5m (the closest distance allowed)
1) ISO 800
2) 100% center crop
3) ISO 200
4) 100% center crop
As you can see the IQ is much better at closer range but still pretty useless to me. I really don't see why would one needs to shoot at f64.
Please note I did not apply any PP. I simply shoot raw then export to JPG at 100% quality through LR3 _________________ Duc
Pentax K100D/K10D/K20D/K-x/K-7 | DA15/ 35/40/70 Limited | DA10-17 | DA14 | DA* 50-135
Takumar: 24/3.5 | 28/3.5 | 35/2 | 35/2.3 | 35/3.5 | 50/1.4 | 55/1.8 | 85/1.8 | 85/1.9 | 105f2.8 | 135/2.5 | 135/3.5 | 150/4 | 200/4 | 300/4
Pentax: K20/4 | M20/4 | M28/3.5 | K30/2.8 | K35/3.5 | M50/1.4 | M50/1.7 | K50/1.2 | K50/1.4 | K55/1.8 | A50/1.4 | M85/2 | M100/2.8 | K105/2.8 | M100/f4 | M135/3.5 | K135/2.5 | M150/4 | M200/4 | M300/4
M42: Too many to list
Stock Images
My Flickr: Sunny Skye |
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ducdao
Joined: 19 Jun 2010 Posts: 288 Location: Montreal, Canada
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Posted: Sat Jan 08, 2011 8:40 am Post subject: |
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ducdao wrote:
Good for portrait.
shoot at f4 natural light
_________________ Duc
Pentax K100D/K10D/K20D/K-x/K-7 | DA15/ 35/40/70 Limited | DA10-17 | DA14 | DA* 50-135
Takumar: 24/3.5 | 28/3.5 | 35/2 | 35/2.3 | 35/3.5 | 50/1.4 | 55/1.8 | 85/1.8 | 85/1.9 | 105f2.8 | 135/2.5 | 135/3.5 | 150/4 | 200/4 | 300/4
Pentax: K20/4 | M20/4 | M28/3.5 | K30/2.8 | K35/3.5 | M50/1.4 | M50/1.7 | K50/1.2 | K50/1.4 | K55/1.8 | A50/1.4 | M85/2 | M100/2.8 | K105/2.8 | M100/f4 | M135/3.5 | K135/2.5 | M150/4 | M200/4 | M300/4
M42: Too many to list
Stock Images
My Flickr: Sunny Skye |
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