| View previous topic :: View next topic |
| Author |
Message |
tb_a
Joined: 26 Jan 2010
Posts: 3678
Location: Austria
Expire: 2019-08-28
|
 Posted: Tue Feb 14, 2017 2:33 pm Post subject: Wide angle converter experiment |
 |
|
tb_a wrote:
Inspired by member Antoine I've tried this rather strange combination which results in apprx. 14mm focal length.
Zhongy lens turbo + Minolta MD 24mm/F2.8 + Olympus A28 H.Q. Converter 0.8X mounted on my NEX-C3:
For comparison the same scenery shot with the CV 15mm/F4.5 which results in nearly the same angle of view:
Well, if somebody don't cares about the edges, the converter picture is at least better than no picture. 
Seriously, the center isn't bad at all. I am quite surprised.
BTW, if used with focal lengths of 28mm and longer the smeared edges will nearly disappear completely. Obviously the Olympus converter which was originally developed for 28mm is in that respect the limiting factor. Unfortunately I don't have any 28mm lens which would fit into that arrangement, but I've tested it with 35mm and 50mm lenses.
_________________
Thomas Bernardy
Manual focus lenses mainly from Minolta, Pentax, Voigtlaender, Leitz, Topcon and from Russia (too many to be listed here). |
|
| Back to top |
|
 |
Antoine
Joined: 08 Jan 2016
Posts: 298
Location: London
|
| Posted: Tue Feb 14, 2017 4:17 pm Post subject: |
|
|
Antoine wrote:
Thanks Thomas! Also nice for very short distance pictures where it creates nice perspectives with great DOFs as these do. Of course, does not mean to compete with Voigtlander but the converter was a left over I was not using it, hence free. I can pretty much cover most situations with this (or the 24 mm), a normal lens and a short tele plus a mirror lens when travelling.
Not absolutly sure it is the same converter though. I bought it to fit the Olympus C-5050 Zoom issued in 2003 which had a 3 * zoom (7-21mm zoom, 1/8 inch captor) and had 2 addiitons: one tele (useless) and this 55 mm screwing converter.
_________________
Antoine
Sony A6000 APS-C and Sony A7 Rii
Minolta Fisheye MD Rokkor 7.5 mm f4, Fisheye MD 16 f2.8 MD R 17mm f4, MD R 20mm f2.8, MC VFC & MDIII 24mm f2.8, MD 28mm f2.0 &3.5, MD II 35mm 1.8, MD 45mm f2.0, MD 50mm f 1.2 & MD I f1.4, MC PG 58mm 1.2, MD 85mm f2.0, MD R 85mm f2.8 Varisoft, MC 85mm f1.7 MD R 100mm f2.5, MD R 100mm f4.0 macro, MD III 135mm f2.8, MD R 200mm f2.8 & 4.0, RF 250mm f5.6, MD 300mm f4.5, MD APO 400 mm f5.6, RF 500mm f8.0, RF 800mm f8.0 *2 300-s and 300-l
100 mm f4 macro bellows (5/4)
Vivitar 17mm f3.5, Elicar 300mm mirror f5.6, Zhongi turbo ii
Sigma 16mm f 2.8 fish eye
Zooms:24-50 mm f4, 35-70 mm f3.5 macro, 28-85mm f3.5-4.5, 50-135 f 3.5, 70-210 f4 and MD APO 100-500 mm f8
Last edited by Antoine on Wed Feb 15, 2017 8:51 am; edited 1 time in total |
|
| Back to top |
|
|
tb_a
Joined: 26 Jan 2010
Posts: 3678
Location: Austria
Expire: 2019-08-28
|
| Posted: Tue Feb 14, 2017 4:35 pm Post subject: |
|
|
tb_a wrote:
| Antoine wrote: |
| Thanks Thomas! Also nice for very short distance pictures where it creates nice perspectives with great DOFs as these do. Of course, does not mean to compete with Voigtlander but the converter was a left over I was not using it, hence free. I can pretty much cover most situations with this (or the 24 mm), a normal lens and a short tele plus a mirror lens when travelling. |
Unfortunately I can't test it on 28mm. It should work best in this combination and is resulting in 16mm focal length. For wider lenses you have obviously to live with the bad corners by design.
I still have the Olympus converter from my first serious digital camera, the Minolta D7i (28-200mm). For this camera it was a great option to increase the FOV and it did a fantastic job.
_________________
Thomas Bernardy
Manual focus lenses mainly from Minolta, Pentax, Voigtlaender, Leitz, Topcon and from Russia (too many to be listed here). |
|
| Back to top |
|
|
devinw
Joined: 19 Aug 2016
Posts: 207
Location: Portland, OR
|
| Posted: Tue Feb 14, 2017 6:49 pm Post subject: |
|
|
devinw wrote:
Nice. I use the Zhongi LT2 with my Rokkor 24mm f2.8 as well. No wide angle converter tho. Here's some pics with it:
_________________
Camera: Sony a6300
E-Mount: Zeiss/Sony 16-70 f/4, Samyang 12mm f/2
Rokkor: MD PG 50mm f1.4, MD 100mm Macro f3.5, MD 135mm f2.8, MD Zoom 35-70mm f3.5, MD Zoom 75-150 f4
Canon FD: nFD 50mm f1.4, Tokina AT-X 100-300mm f4
My Flickr: https://www.flickr.com/photos/westonde/
|
|
| Back to top |
|
|
Antoine
Joined: 08 Jan 2016
Posts: 298
Location: London
|
| Posted: Tue Feb 14, 2017 8:31 pm Post subject: |
|
|
Antoine wrote:
Thanks! I realise I can now also use this Zhongi LT2 with a MD 28-85 zoom or any higher fixed focal length giving quite a range when I want only one lens.
I wish techart would also launch an AF MD converter for "snapshots". One has to avid too many adapters in series.
_________________
Antoine
Sony A6000 APS-C and Sony A7 Rii
Minolta Fisheye MD Rokkor 7.5 mm f4, Fisheye MD 16 f2.8 MD R 17mm f4, MD R 20mm f2.8, MC VFC & MDIII 24mm f2.8, MD 28mm f2.0 &3.5, MD II 35mm 1.8, MD 45mm f2.0, MD 50mm f 1.2 & MD I f1.4, MC PG 58mm 1.2, MD 85mm f2.0, MD R 85mm f2.8 Varisoft, MC 85mm f1.7 MD R 100mm f2.5, MD R 100mm f4.0 macro, MD III 135mm f2.8, MD R 200mm f2.8 & 4.0, RF 250mm f5.6, MD 300mm f4.5, MD APO 400 mm f5.6, RF 500mm f8.0, RF 800mm f8.0 *2 300-s and 300-l
100 mm f4 macro bellows (5/4)
Vivitar 17mm f3.5, Elicar 300mm mirror f5.6, Zhongi turbo ii
Sigma 16mm f 2.8 fish eye
Zooms:24-50 mm f4, 35-70 mm f3.5 macro, 28-85mm f3.5-4.5, 50-135 f 3.5, 70-210 f4 and MD APO 100-500 mm f8 |
|
| Back to top |
|
|
tb_a
Joined: 26 Jan 2010
Posts: 3678
Location: Austria
Expire: 2019-08-28
|
| Posted: Wed Feb 15, 2017 8:19 am Post subject: |
|
|
tb_a wrote:
Just to proof my above statement about the Olympus A-28 0.8X wide converter about it's performance.
This is a test picture from a SMC Pentax-A 28mm/F2.8 lens with the Oly converter alone, resulting in 22,4mm focal length:
_________________
Thomas Bernardy
Manual focus lenses mainly from Minolta, Pentax, Voigtlaender, Leitz, Topcon and from Russia (too many to be listed here). |
|
| Back to top |
|
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Search
Memberlist
Register
Profile
Log in to check your private messages
Log in
