k-hawinkler Posted January 18, 2013 Author Share #41 Posted January 18, 2013 Advertisement (gone after registration) The way I look at this matter is that smaller than full frame sensors give long lenses the extra reach one typically desires. So, in that case an adapter and not the Speed Booster is the tool of choice. It doesn't make much sense to use the Speed Booster on long tele-lenses. However, I think the situation is completely different for short tele, normal, and wide angle lenses. Here the Speed Booster allows an APS-C size sensor to capture an image with a crop factor of a smidge less than 1.1x, much smaller than the 1.5x factor otherwise. This image was taken with NEX-7 + Speed Booster + Leitz Elmarit 1:2.8/90. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/196102-metabones-speed-booster/?do=findComment&comment=2218453'>More sharing options...
Advertisement Posted January 18, 2013 Posted January 18, 2013 Hi k-hawinkler, Take a look here Metabones Speed Booster. I'm sure you'll find what you were looking for!
Erik Gunst Lund Posted January 19, 2013 Share #42 Posted January 19, 2013 Thanks for your tests! You got an answer directly form Brian on Nikon Gear, the converter is designed for fast lenses with short focal lengths mainly since that is what is desirable for NEX and 4/3 etc. Link to post Share on other sites More sharing options...
k-hawinkler Posted January 19, 2013 Author Share #43 Posted January 19, 2013 Thanks for your tests! You got an answer directly form Brian on Nikon Gear, the converter is designed for fast lenses with short focal lengths mainly since that is what is desirable for NEX and 4/3 etc. Hi Erik, Thank you so much. On page Speed up your lens? - APS-C Mirrorless Systems - Nikongear.com - Page 6 Brian also explains well the issues with ultra teles. Very interesting discussion indeed. Link to post Share on other sites More sharing options...
k-hawinkler Posted January 19, 2013 Author Share #44 Posted January 19, 2013 Upon reflection, for available light situations it might make sense to use the Metabones Speed Booster with the APO-R 280/4 if the gain in one stop of exposure outweighs the degradation of image quality in the extreme corners. An interesting thought, to have almost the equivalent of an APO 280/2.8 methinks. :D Link to post Share on other sites More sharing options...
k-hawinkler Posted January 21, 2013 Author Share #45 Posted January 21, 2013 I investigated a little bit the question of corner sharpness with the Tele-Elmar 135/4 lens. So, I displayed a bunch of characters on my 30" Apple Cinema Display and took images of them with these systems: Sony NEX-7 + Metabones E mount - L/R Speed Booster + Leitz Bellows II + Leitz 16558 Ring + Leitz Tele-Elmar 135/4 lens head and Nikon D800E + Nikon F- Leica M Adapter + Leitz OUFRO/16469 Ring + Leitz Bellows II + Leitz 16558 Ring + Leitz Tele-Elmar 135/4 lens head Wide open the two images look like this: Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! As one can see in the first image, there is still some vignetting caused by the Speed Booster for the Tele-Elmar 135/4. I have posted full resolution JPGs for f=4, 5.6, 8, 11, 16, and 22. The results for the APS-C size sensor NEX-7 with Speed Booster can be found here: 2013-01-20 NEX-7 SpB TE135f4 - winklers' Photos The results for the FF sensor D800E ........................................... can be found here: 2013-01-20 D800E TE135f4 - winklers' Photos What can one conclude from these tests? I always appreciate feedback from all sides. Thanks. Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! As one can see in the first image, there is still some vignetting caused by the Speed Booster for the Tele-Elmar 135/4. I have posted full resolution JPGs for f=4, 5.6, 8, 11, 16, and 22. The results for the APS-C size sensor NEX-7 with Speed Booster can be found here: 2013-01-20 NEX-7 SpB TE135f4 - winklers' Photos The results for the FF sensor D800E ........................................... can be found here: 2013-01-20 D800E TE135f4 - winklers' Photos What can one conclude from these tests? I always appreciate feedback from all sides. Thanks. ' data-webShareUrl='https://www.l-camera-forum.com/topic/196102-metabones-speed-booster/?do=findComment&comment=2220414'>More sharing options...
jaapv Posted January 21, 2013 Share #46 Posted January 21, 2013 And wideangles? Link to post Share on other sites More sharing options...
Erik Gunst Lund Posted January 21, 2013 Share #47 Posted January 21, 2013 Advertisement (gone after registration) The Nex7 and 135 4 looks really good except the far corners, and stopping down doesn't do anything in this regard, the SB is not designed/recommended for this type of lenses. choose another, shorter fl lens instead... Looking forward to the wide angles... Link to post Share on other sites More sharing options...
k-hawinkler Posted January 21, 2013 Author Share #48 Posted January 21, 2013 I have only Leica M lenses and Nikkor lenses with wide angles. The latter require a different Speed Booster. The former are not supported by any Speed Booster model. Sorry. Link to post Share on other sites More sharing options...
k-hawinkler Posted January 22, 2013 Author Share #49 Posted January 22, 2013 Metabones Speed Booster adapter – full review | EOSHD.com Link to post Share on other sites More sharing options...
k-hawinkler Posted January 22, 2013 Author Share #50 Posted January 22, 2013 LensRentals.com - Metabones Magic? Link to post Share on other sites More sharing options...
Erik Gunst Lund Posted January 22, 2013 Share #51 Posted January 22, 2013 Very convincing Link to post Share on other sites More sharing options...
pico Posted January 22, 2013 Share #52 Posted January 22, 2013 Metabones Speed Booster adapter – full review | EOSHD.com From the review "Full frame look – wider field of view, shallower DOF, attractive vignette and light fall off towards corners" The later becomes a negative later in the article. I point to the positive because I worked in digital video where we found that people liked a bit of vignette, and did not like high definition, even though they did not explicitly express just those points, probably because they were not photographers familiar with the terms. For video the SB might be a big hit. Not so sure about stills yet. Link to post Share on other sites More sharing options...
k-hawinkler Posted January 22, 2013 Author Share #53 Posted January 22, 2013 The later becomes a negative later in the article. I point to the positive because I worked in digital video where we found that people liked a bit of vignette, and did not like high definition, even though they did not explicitly express just those points, probably because they were not photographers familiar with the terms. For video the SB might be a big hit. Not so sure about stills yet. Hi pico, I think it's a useful product with some pros and cons and I plan on getting the Nikon version when it comes out for my Nikkor wide angles. The Canon version permits AF for some lenses on a NEX - but according to these reviews it seems really slow. This guy Metabones Speed Booster adapter – full review | EOSHD.com is exaggerating a bit little things without a need to do so. But the gist of his findings seems to be correct. Link to post Share on other sites More sharing options...
k-hawinkler Posted January 23, 2013 Author Share #54 Posted January 23, 2013 If we combine the APO-Telyt-R 280/4 with the Metabones Speed Booster for NEX and m4/3 (available later) and with these cameras M240, NEX, and m4/3 we obtain the following set of virtual FoV or virtual FL: 280/4 mm on Leica M240 298/2.8 mm on NEX w Speed Booster 398/2.8 mm on m4/3 w Speed Booster 420/4 mm on NEX 560/4 mm on m4/3 Considering the cost for the M240 and the APO-Telyt-R 280/4, the other components, namely NEX, m4/3, NEX Speed Booster, and m4/3 Speed Booster are fairly modest cost-wise in comparison and therefore are an attractive option. The following image I took today with APO-Telyt-R 280/4 on Olympus OM-D E-M5 with some support but In-Body-Image-Stabilization IBIS left switched on. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Also, I had set the EVF to operate at 120 Hz. No problem achieving focus with 14x magnification. Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! Also, I had set the EVF to operate at 120 Hz. No problem achieving focus with 14x magnification. ' data-webShareUrl='https://www.l-camera-forum.com/topic/196102-metabones-speed-booster/?do=findComment&comment=2223061'>More sharing options...
k-hawinkler Posted January 24, 2013 Author Share #55 Posted January 24, 2013 Sorry about the last picture. This one reflects better the potential of both camera and lens, I hope. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/196102-metabones-speed-booster/?do=findComment&comment=2223098'>More sharing options...
k-hawinkler Posted February 1, 2013 Author Share #56 Posted February 1, 2013 Here is a review of the Canon version of the Speed Booster. First Impressions: Metabones Speed Booster: Digital Photography Review Link to post Share on other sites More sharing options...
k-hawinkler Posted February 2, 2013 Author Share #57 Posted February 2, 2013 I posted more full resolution images for this configuration: Sony NEX-5N with EVF + METABONES L/R-E mount Speed Booster + Leitz Ring 14127 + Short Focus Mount 16464 + Tele-Elmar lens head 135/4 + Hood 12575 here: Metabones Speed Booster - Vignetting with Tele-Lenses: Sony NEX Talk Forum: Digital Photography Review Stopping down seems to improve image quality in the corners somewhat but not completely. Link to post Share on other sites More sharing options...
k-hawinkler Posted February 2, 2013 Author Share #58 Posted February 2, 2013 Here is an interesting tidbit, quote: "BTW it is interesting that in Khaw samples, there is no heavy vignetting in the extreme corners. My EF/NEX version shows vignetting at all lenses above 35mm and it is getting worse as the lens is stopped down." Re: to jpr2: Sony NEX Talk Forum: Digital Photography Review Of course, khaw that's me. Link to post Share on other sites More sharing options...
k-hawinkler Posted February 3, 2013 Author Share #59 Posted February 3, 2013 The following images are from this configuration: Sony NEX-7 + METABONES L/R - E mount Speed Booster + Leica APO-Telyt-R 1:3.4/180 Shot wide open at nominally f/3.4 but effectively at f/2.4, ISO=800, and at 1/320s. In the first image vignetting has been corrected, in the second image vignetting is uncorrected. Vignetting has been corrected Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Vignetting is uncorrected Full resolution images are here: Re: Metabones Speed Booster - Vignetting with Tele-Lenses: Sony NEX Talk Forum: Digital Photography Review Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! Vignetting is uncorrected Full resolution images are here: Re: Metabones Speed Booster - Vignetting with Tele-Lenses: Sony NEX Talk Forum: Digital Photography Review ' data-webShareUrl='https://www.l-camera-forum.com/topic/196102-metabones-speed-booster/?do=findComment&comment=2231911'>More sharing options...
k-hawinkler Posted February 3, 2013 Author Share #60 Posted February 3, 2013 Here is another shot with the same configuration: Sony NEX-7 + METABONES L/R - E mount Speed Booster + Leica APO-Telyt-R 1:3.4/180 Again, shot wide open at nominally f/3.4 but effectively at f/2.4, ISO=4000, and at 1/60s. I used Hand-held Twilight mode. In this mode the camera takes 5 or 6 shots in rapid succession with high ISO and averages out the noise. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! A full resolution image is here: Re: Metabones Speed Booster - Vignetting with Tele-Lenses: Sony NEX Talk Forum: Digital Photography Review One can still detect some vignetting and image degradation in the extreme corners. But to me the image certainly appears to be usable. Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! A full resolution image is here: Re: Metabones Speed Booster - Vignetting with Tele-Lenses: Sony NEX Talk Forum: Digital Photography Review One can still detect some vignetting and image degradation in the extreme corners. But to me the image certainly appears to be usable. ' data-webShareUrl='https://www.l-camera-forum.com/topic/196102-metabones-speed-booster/?do=findComment&comment=2231986'>More sharing options...
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