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D1N0
Joined: 07 Aug 2012
Posts: 1986
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 Posted: Mon Jun 13, 2022 12:28 pm Post subject: |
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D1N0 wrote:
| PBFACTS wrote: |
Yesterday i saw a pic of the cimko 28-50
Except the rubbers , certainly the same |
I've come to the conclusion the Osawa is a Kobori, Like the Soligor variant. Both have 12feet/5meters as the first distance markings next to infinity and a .6m CFD + Macro. The Cimko has .5m cfd, no macro and 30ff/10meter markings.
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pentaxian |
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lumens pixel
Joined: 27 Feb 2019
Posts: 577
Expire: 2021-06-25
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| Posted: Fri Jun 17, 2022 10:26 am Post subject: |
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lumens pixel wrote:
I have received the nFD 28-55 in pretty good condition and it seems to be a very good lens. I need to spend more time on it and when possible post some pics.
True the construction is not old rokkor or breechlock FD style but it is very light which is also nice if you see it as a travel companion.
My only gripe is the play in the focus ring which complicates a bit fine focusing but there is nothing impossible to deal with.
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Lumens Pixel
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Minolta SR mount: 16 2,8; Sigma SuperWide 24 2,8; 28 2,5; 28 2,8; 28 3,5; 35 2,8; 45 2,0; 50 1,4; 50 1,7; 50 2,0; 58 1,4; 85 2,0; 100 2,5; 100 4 Macro; 135 3,5; 135 2,8; 200 4; RF 250 5,6; 24-35 3,5; 35-70 3,5; 75-150 4; 70-210 4
Canon FD mount: Tokina RMC 17 3,5; 28 2,8; 35 2,8; 50 1,8; 50 3,5 Macro; 55 1,2; 135 3,5; 135 2,5; 200 4,0; 300 5,6; 28-55 3,5 4,5; 70-150 4,5; 70-210 f4; 80-200 4L
Tamron Adaptall: 28-80 3,5-4,2 (27A); 70-210 3,8-4 (46A); 60-300 (23A); 90 2,5 (52B); 35-135 3,5-4,5 (40A)
Tamron SP: 20-40 2,7-3,5 (266D) |
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D1N0
Joined: 07 Aug 2012
Posts: 1986
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| Posted: Fri Jun 17, 2022 11:02 am Post subject: |
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D1N0 wrote:
| lumens pixel wrote: |
I have received the nFD 28-55 in pretty good condition and it seems to be a very good lens. I need to spend more time on it and when possible post some pics.
True the construction is not old rokkor or breechlock FD style but it is very light which is also nice if you see it as a travel companion.
My only gripe is the play in the focus ring which complicates a bit fine focusing but there is nothing impossible to deal with. |
Nice. Play and zooms is often a thing. I fear it can also affect the optical performance of the lens. The few test shots I did with the vivitar it seemed a bit low in contrast, especially at infinity, I've had the same thing with a wobbly Pentax-A 35-70mm 1:4. Poor contrast. A better copy didn't have that problem. I should have all of my ordered 28-50's in 2 to three weeks. It may be a while before I can test them as my house is being renovated and I packed most of my lenses in crates.
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pentaxian |
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lumens pixel
Joined: 27 Feb 2019
Posts: 577
Expire: 2021-06-25
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| Posted: Sat Jun 25, 2022 4:24 pm Post subject: |
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lumens pixel wrote:
Who is going to beat this one: Canon FDn 28-55 3,5/4,5 @35mm f5,6
[img] Tours de la Défense by lumens pixel, sur Flickr[/img]
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Lumens Pixel
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Minolta SR mount: 16 2,8; Sigma SuperWide 24 2,8; 28 2,5; 28 2,8; 28 3,5; 35 2,8; 45 2,0; 50 1,4; 50 1,7; 50 2,0; 58 1,4; 85 2,0; 100 2,5; 100 4 Macro; 135 3,5; 135 2,8; 200 4; RF 250 5,6; 24-35 3,5; 35-70 3,5; 75-150 4; 70-210 4
Canon FD mount: Tokina RMC 17 3,5; 28 2,8; 35 2,8; 50 1,8; 50 3,5 Macro; 55 1,2; 135 3,5; 135 2,5; 200 4,0; 300 5,6; 28-55 3,5 4,5; 70-150 4,5; 70-210 f4; 80-200 4L
Tamron Adaptall: 28-80 3,5-4,2 (27A); 70-210 3,8-4 (46A); 60-300 (23A); 90 2,5 (52B); 35-135 3,5-4,5 (40A)
Tamron SP: 20-40 2,7-3,5 (266D) |
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D1N0
Joined: 07 Aug 2012
Posts: 1986
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| Posted: Sat Jun 25, 2022 4:55 pm Post subject: |
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D1N0 wrote:
Looks good. I will have to visit Paris to test mine. The Vivitar looks decent apart from a contrast problem. It's now boxed though due to renovation work on my house I had to put most of my lenses in crates. That will be finished in a few weeks. Meanwhile two packages from Japan are expected in a week and an a half I guess, Carrying Pentax, Tamron (twice) and Sigma.
So far I have only these two Bokeh test shots from the Vivitar 28-50mm 1:3.5-4.5 @50mm F4.5
 Fence Bokeh by The lens profile, on Flickr
 Bokeh balls by The lens profile, on Flickr
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pentaxian |
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sergun
Joined: 01 Jun 2017
Posts: 214
Location: наша раша
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| Posted: Sat Jun 25, 2022 8:32 pm Post subject: |
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sergun wrote:
I haven't read everything here, but if the camera is Sony A7 and higher, then I wouldn't hesitate to take a native Sony 28-60mm
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https://www.flickr.com/photos/105161078@N06/
https://fotki.yandex.ru/users/sergun-p |
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Alsatian2017
Joined: 05 Mar 2018
Posts: 157
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| Posted: Sun Jun 26, 2022 6:30 am Post subject: |
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Alsatian2017 wrote:
Great picture and beautiful light 
The vignetting seems to be a little bit heavy but here it adds to the visual impact. |
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lumens pixel
Joined: 27 Feb 2019
Posts: 577
Expire: 2021-06-25
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| Posted: Sun Jun 26, 2022 6:55 am Post subject: |
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lumens pixel wrote:
Thank you Volker. Vignetting has been added in post.
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Lumens Pixel
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Minolta SR mount: 16 2,8; Sigma SuperWide 24 2,8; 28 2,5; 28 2,8; 28 3,5; 35 2,8; 45 2,0; 50 1,4; 50 1,7; 50 2,0; 58 1,4; 85 2,0; 100 2,5; 100 4 Macro; 135 3,5; 135 2,8; 200 4; RF 250 5,6; 24-35 3,5; 35-70 3,5; 75-150 4; 70-210 4
Canon FD mount: Tokina RMC 17 3,5; 28 2,8; 35 2,8; 50 1,8; 50 3,5 Macro; 55 1,2; 135 3,5; 135 2,5; 200 4,0; 300 5,6; 28-55 3,5 4,5; 70-150 4,5; 70-210 f4; 80-200 4L
Tamron Adaptall: 28-80 3,5-4,2 (27A); 70-210 3,8-4 (46A); 60-300 (23A); 90 2,5 (52B); 35-135 3,5-4,5 (40A)
Tamron SP: 20-40 2,7-3,5 (266D) |
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D1N0
Joined: 07 Aug 2012
Posts: 1986
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| Posted: Fri Jul 08, 2022 8:06 pm Post subject: |
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D1N0 wrote:
One with the Tamron 07A 28mm F8
 The Pond by The lens profile, on Flickr
It feels a bit wobbly but centering seems not to be impacted. I have another one that is less wobbly, but that has some fungus behind the rear element and I can't seem to get it out. I'm just stripping the notches. I is less contrasty probably due to the fungus. I'm am going to need a hood for it. It's prone to flare. Rotating front means a petal hood is not an option.
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pentaxian |
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D1N0
Joined: 07 Aug 2012
Posts: 1986
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| Posted: Fri Jul 08, 2022 8:15 pm Post subject: |
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D1N0 wrote:
Bokeh test with the same lens (Tamron 07A)
 Bokeh balls by The lens profile, on Flickr
 Fence Bokeh by The lens profile, on Flickr
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pentaxian |
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D1N0
Joined: 07 Aug 2012
Posts: 1986
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| Posted: Fri Jul 08, 2022 8:17 pm Post subject: |
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D1N0 wrote:
Bokeh test with the SMC Pentax-m 28-50mm 1:3.5-4.5
 Bokeh balls by The lens profile, on Flickr
 Fence Bokeh by The lens profile, on Flickr
All bokeh tests are shot at 50mm wide open.
This lens has a seriously sharp centre already wide open.
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pentaxian |
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D1N0
Joined: 07 Aug 2012
Posts: 1986
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| Posted: Fri Jul 08, 2022 8:44 pm Post subject: |
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D1N0 wrote:
The Tamron 07A also doesn't disappoint in close focussing ability .25 at 50mm at 28mm it is a rather mundane .6
 Daisy by The lens profile, on Flickr
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pentaxian |
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Ultrapix
Joined: 06 Jan 2012
Posts: 339
Location: Italy
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| Posted: Sat Jul 09, 2022 9:19 am Post subject: |
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Ultrapix wrote:
Pentax the best, then Tamron, and last one the Vivitar. Unsurplisingly, I'd say. |
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D1N0
Joined: 07 Aug 2012
Posts: 1986
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| Posted: Sun Jul 10, 2022 8:40 pm Post subject: |
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D1N0 wrote:
| Ultrapix wrote: |
| Pentax the best, then Tamron, and last one the Vivitar. Unsurplisingly, I'd say. |
Maybe but bokeh is highly dependent on specific light conditions.
Flare on the Tamron. Overcast conditions subdued light, but the sky is still causing flare and contrast loss. On the second pic I am holding my hand over the lens. It is greatly reduced but still a bit of it in the top middle where the tree is a bit hazy. It could use a petal hood, but that rotating filter thread....
shot @35mm F8
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pentaxian |
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Ultrapix
Joined: 06 Jan 2012
Posts: 339
Location: Italy
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| Posted: Mon Jul 11, 2022 7:35 am Post subject: |
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Ultrapix wrote:
| D1N0 wrote: |
| Ultrapix wrote: |
| Pentax the best, then Tamron, and last one the Vivitar. Unsurplisingly, I'd say. |
Maybe but bokeh is highly dependent on specific light conditions.
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I was meaning the whole picture, the bokeh is of little interest with this kind of FL and aperture IMHO |
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D1N0
Joined: 07 Aug 2012
Posts: 1986
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| Posted: Tue Jul 12, 2022 3:35 pm Post subject: |
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D1N0 wrote:
Pentax-m 28-50 @28mm F8 and 35mm F8
 The Pond 28mm by The lens profile, on Flickr
 The Pond 35mm by The lens profile, on Flickr
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pentaxian |
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D1N0
Joined: 07 Aug 2012
Posts: 1986
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| Posted: Tue Jul 19, 2022 8:25 pm Post subject: |
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D1N0 wrote:
A review of the Canon FD 28-50mm 1:3.5
https://volkergilbertphoto.com/canon-zoom-lens-fd-28-50-mm-f-35/
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pentaxian |
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eggplant
Joined: 27 May 2020
Posts: 313
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| Posted: Tue Jul 19, 2022 10:53 pm Post subject: |
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eggplant wrote:
| D1N0 wrote: |
One with the Tamron 07A 28mm F8
The Pond by The lens profile, on Flickr
It feels a bit wobbly but centering seems not to be impacted. I have another one that is less wobbly, but that has some fungus behind the rear element and I can't seem to get it out. I'm just stripping the notches. I is less contrasty probably due to the fungus. I'm am going to need a hood for it. It's prone to flare. Rotating front means a petal hood is not an option. |
Yes, mine is a bit wobbly under use. |
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