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AlexWicks
Joined: 16 May 2012
Posts: 57
Location: Ipswich, UK
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 Posted: Thu Feb 12, 2015 3:37 pm Post subject: Cosina 100mm f3.5 Macro |
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AlexWicks wrote:
Very pleased with this lens considering the £50 paid for it. Focuses to 1:1 with an included achromat doublet diopter.
And here's a very boring test shot I took at f4-ish I believe (underexposed I know but hard to adjust while holding the lens - no adapter yet  )
Most likely a good CA test and there doesn't seem to be any.
_________________
Cameras: Sony a7s | EOS 400D | Praktica MTL3, LTL3, LLC | FED 5B
Lenses: Helios 44-2 & 44-3 | Indulstar 61 LZ | Pentacon 35mm f2.8 | Pentacon 28mm f2.8 | Minolta 28mm f2.8 |
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AlexWicks
Joined: 16 May 2012
Posts: 57
Location: Ipswich, UK
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| Posted: Thu Feb 12, 2015 4:43 pm Post subject: |
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AlexWicks wrote:
First 1:1 sample (probably a little past in fact):
_________________
Cameras: Sony a7s | EOS 400D | Praktica MTL3, LTL3, LLC | FED 5B
Lenses: Helios 44-2 & 44-3 | Indulstar 61 LZ | Pentacon 35mm f2.8 | Pentacon 28mm f2.8 | Minolta 28mm f2.8 |
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Russ
Joined: 26 Feb 2007
Posts: 432
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| Posted: Sat Feb 14, 2015 6:54 am Post subject: |
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Russ wrote:
A very good lens for little money. Also sold under the Vivitar, Promaster, Phoeniz names.
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'A photograph that mirrors reality, cannot compare to one that reflects the spirit"
Russ |
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edri
Joined: 26 Oct 2014
Posts: 315
Location: walking in the air
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| Posted: Sat Feb 14, 2015 10:22 am Post subject: |
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edri wrote:
There is Pentax FA version too, optical similar as well.
What is the power of diopter? |
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Russ
Joined: 26 Feb 2007
Posts: 432
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| Posted: Sat Feb 14, 2015 4:12 pm Post subject: |
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Russ wrote:
| edri wrote: |
There is Pentax FA version too, optical similar as well.
What is the power of diopter? |
Without the included diopter, you get 1:2 life size. With the diopter, you can achieve 1:1 life size.
Russ
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'A photograph that mirrors reality, cannot compare to one that reflects the spirit"
Russ |
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aoleg
Joined: 22 Feb 2008
Posts: 1387
Location: Berlin, DE
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| Posted: Sat Feb 14, 2015 5:41 pm Post subject: |
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aoleg wrote:
I paid even less for mine (although without the 1:1 adapter) in P/KA-R mount. I had to remove the "Ricon pin" though, as it was of a harmful type and could make the lens stuck on a Pentax AF body. The removal was very easy; after that, I've got a perfect macro lens with manual focus and automatic aperture control on a Pentax body. AF versions of this lens sell for double the price and have inferior handling and build quality.
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List of lenses |
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std
Joined: 09 Feb 2010
Posts: 1826
Location: Bulgaria
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| Posted: Sat Feb 14, 2015 7:15 pm Post subject: |
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std wrote:
I wonder is it has the same lens elements as the Kyocera from Dental Eye camera.
If it is it will be wonderful.
_________________
Stefan
My lens list:
SLR MD: Rokkor 1,7/50 Exakta: Kilfitt-Makro-Kilar E 3.5/4cm; CZJ 2/50 Pancolar;M42: CZJ 2.8/50 Tessar; Mir-1B 2.8/37; Jupiter-9 2/85 T-mount: Tamron 5.9/200; Tamron 6.9/300; Tamron 7.5/400 C-mount: Cosmicar 1.8/50 Y/S: Sun 3.5/38-90, Sun 4/70-210 RF Contax RF: Jupiter-8 2/50; Contax G:CZ 2,8/21 Biogon T; CZ 2,8/28 Biogon T; CZ 2/35 Planar T; CZ 2/45 Planar T; CZ 2,8/90 Sonnar T |
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edri
Joined: 26 Oct 2014
Posts: 315
Location: walking in the air
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| Posted: Sat Feb 14, 2015 9:11 pm Post subject: |
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edri wrote:
| Russ wrote: |
| edri wrote: |
There is Pentax FA version too, optical similar as well.
What is the power of diopter? |
Without the included diopter, you get 1:2 life size. With the diopter, you can achieve 1:1 life size.
Russ |
I know that. I have a similar lens, but without the original adapter. I would like to know what achromat close up lens would be equivalent to the original adapter, hard to find separately. |
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AlexWicks
Joined: 16 May 2012
Posts: 57
Location: Ipswich, UK
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| Posted: Sun Feb 15, 2015 2:39 pm Post subject: |
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AlexWicks wrote:
About a +4 Diopter, but a better choice would be a 50mm extension tube.
A few from today (can't focus too far, I have an MD lens on EOS body, not exactly thin mount adapter either)
_________________
Cameras: Sony a7s | EOS 400D | Praktica MTL3, LTL3, LLC | FED 5B
Lenses: Helios 44-2 & 44-3 | Indulstar 61 LZ | Pentacon 35mm f2.8 | Pentacon 28mm f2.8 | Minolta 28mm f2.8 |
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raay04
Joined: 08 Dec 2012
Posts: 340
Location: India
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| Posted: Mon Feb 16, 2015 4:15 pm Post subject: |
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raay04 wrote:
A great lens for the price , its light easy to carry , plenty sharp , works great with extension tubes
 Untitled by Abhishek Ray, on Flickr
_________________
Cameras-Point and shoot- Powershot A590IS Mirroless-SONY NEX-3
Lenses
M42 Mount
Super-Takumar 55/1.8, Super-Takumar 50/1.4 ,SMC Takumar 50/1.4 ,MC Helios 44M7-58/2,MC Helios 77M-4 50/1.8,Helios 44-2(valdai), Zenitar-M 50/1.7 Pentacon 50/1.8, MC Jupiter-37AM 135/3.5, Industar 50-2 50/3.5
Nikon F mount
Vivitar close focus 28/2.8(Komine) Keleinar 5N 100/2.8
LTM
Jupiter 8 50/2
KIEV
Jupiter8M ( element donor lens )
Minolta SR(MD)
MD 35/1.8, MD 35-70/3.5 macro, MD 50/1.4 ,Vivitar Auto macro 55/2.8,
Canon FD
FDn50/1.4
Minolta AF
Vivitar (cosina) 100/3.5 macro
Minolta AF 35-70/4
Enlarger
EL NIKKOR 50/2.8
Adaptall
Tamron 24/2.5 , Tamron sp 90/2.5 |
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edumad
Joined: 11 Feb 2009
Posts: 348
Location: Esposende, Portugal
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| Posted: Mon Feb 16, 2015 4:48 pm Post subject: |
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edumad wrote:
I had this lens. Really great results, maybe not the best build quality, since it is plastic.
When you compare picture quality with other 100 mm macros with other prices... This really is an example of value for money.
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TWAPSI - The World As Photography Sees It |
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RAART
Joined: 10 Oct 2012
Posts: 497
Location: Oakville, ON, Canada
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| Posted: Wed Feb 18, 2015 7:36 am Post subject: |
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RAART wrote:
I have AF Vivitar version without adapter for Pentax and I can vouch that this lens delivers when stopped down a bit...
Just look at Flick images: https://www.flickr.com/groups/cosina/pool/
_________________
Camera: Pentax K3
FOR SALE:
Do you have Pentax-A or F or FA primes and like to trade?
Here is the list what I have to trade/sale:
Primes: - Kiron 28mm f2 (C/Y); Vivitar 28mm f2.5 Auto (FD); Minolta MD 50mm f2 (incl. adapter to m4/3); Miranda Auto 35mm f2.8 EC (incl. adapter to m4/3); Miranda Auto 135mm f2.8 EC (incl. adapter to m4/3);
Zoom Lenses:
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