Posts

Showing posts with the label Lens Adapter

Sony A7r with Contax G 28mm Biogon Test Shots

Image
Manhattan from Brooklyn
We are still learning which lenses play well with the Sony A7r and we found one that's not so friendly. The Contax G 28mm f/2.8 Biogon, shown in our previous post, is a non-retrofocus rangefinder lens which means that the rear of the lens is closer to the film plane or sensor. This causes the light at the edges to hit the Sony's A7r full frame sensor at oblique angles which results in color casts. This happens with the Leica M9 and M240 but is corrected with in-camera with software. The color cast can also be corrected with CornerFix or Light Room's Flat Field Plug-in, discussed by Tobinators here. We did not correct the images here for color cast.

Apart from the color cast, the Contax G 28mm Biogon performed well. We love the sharpness, contrast, and color the lens and the Sony A7r sensor delivers. Most of the shots are at f/5.6 or f/8 as we tried for the sweet spot of the lens. The A7r was set to Aperture Priority as there was plenty of li…

Trainspotting with the 40mm M-Rokkor and Sony A7r

Image
Here are some test shots with the Minolta 40mm f/2 M-Rokkor for the Minolta CLE. This is the multicoated version of the Leica 40mm Summicron-C. We used the very compact 40mm M-Rokkor walking around a local train museum with the Sony A7r via a Leica M lens adapter. The shots up to the handcart are all done at maximum aperture of f/2. Manual focus was very easy with using the viewfinder magnification of the A7r even in the mid-day sun. The mid-day sun also guaranteed high shutter speeds at ISO 100 and f/2. All the shots are handheld.

















The shots below are at f/5.6 up to f/11. We need to test this lens more but the sweet spot is definitely at f/5.6.




The CSX 152 (GE AC4400CW diesel-electric locomotive) and the CSX 7305 (GE C40-8 [Dash 8]) was shot during the afternoon sun.







Sony A7r with a Minolta 40mm f/2 M-Rokkor via Leica M Adapter
The lens has been great on the Minolta CLE and NEX-7 and it performs well on the full-frame A7r. The lightweight and compact 40mm M-Rokkor with a fairl…

Konica Hexanon 57mm 1.2 on NEX-7

Image
We've seen what the Sony A7r can do with the Konica 57mm f/1.2, now it's the NEX-7's turn. We actually took these shots almost two years ago. The 57mm on the NEX-7's APS-C sensor produces an equivalent field of view of 86mm. The lens having such a large aperture at f/1.2 is perfect for isolating your subjects.


The shots are most likely at f/2.0 instead of wide open. We had to stop down since it was producing better results that day. We love greens that are produced by the Sony sensor and the shots below show it well.











/>


Can you tell a big difference between the 2 year old NEX-7 shots vs the recent A7r shots? Our biggest lesson is to process your files as soon as you can.

Autofocus Speed with LA-EA4 and Sony A7

Here's a quick video showing the autofocus speed of the Sony A7 and the LA-EA4 lens adapter. The LA-EA4 allows the Sony Alpha / Minolta A mount lenses to be used on the Sony A7 with phase detect autofocus.

Sony A7, Sigma 50mm via LA-EA4 Adapter
Here is Mr. Ticknor giving his impressions on using the Sony A7 with a Tamron 70-200 f/2.8 lens via the LA-EA4 lens adapter.

Sony A7 with Tamron 70-200 f/2.8 Impressions by Ticknor Photography

Sony A7r with Konica Hexanon 57mm f1.2

Image
Sony A7r with Konica Hexanon 57mm f/1.2 shot by NEX-7 with a Leica 60mm Macro-Elmarit-R
Here are some of our test shots from the Sony A7r and the Konica Hexanon 57mm f/1.2 lens. The lens was mounted on the A7r using a Konica AR lens adapter. We wanted to test out the lens at f/1.2 the whole time and it was fitted with a 4X ND filter to battle the sun. The 1/8000 shutter speed and 50 ISO of the Sony A7r helped at times as well.

The Konica 57mm played very well with the A7r per our standards. All the shots were handheld as we rarely use a tripod. The focusing, at such a shallow depth of field from the large f/1.2 aperture of the lens, was manageable on the A7r. The weight of the lens would make us think twice of walking around with it but the results are hard to argue with. The details shown at f/1.2 is remarkable even at the outer edges of the shots.



100% crop of the shot above shows great detail.
Not a technically perfect shot.
Red Pail Pops.
100% crop of the shot above at the top …

Sony A7S at ISO 409600 Nightvision.

Sony A7S ISO 1600 to 409,600
Let's go eight stops by the campfire.

Sony A7 and A7r Hands On with DigitalRev

Image
Sony A7r Weather Sealing Test with 28-70mm FE Kit Lens
Kai Wong of DigitalRev Plays with the Sony A7 Cameras
The new Sony A7 and A7r cameras are featured on Digital Rev with Kai Wong. The A7's 28-70mm FE Kit lens was used on the A7r and produced "stellar" shots. The A7 and A7r's focus systems were compared. The water resitance was also tested using the A7r and the 28-70mm kit lens. A Leica 50mm f/0.95 Noctilux-M ASPH was used to show how adaptable the E-mount is. The focus peaking display was nicely featured. In conclusion, Kai was impressed with both cameras, "Sony has created a product of desire."

Sony A7r Focus Peaking with Leica Noctilux
Sony A7r Rear LCD Water Resistance

Sony A7 Kit

Sony A7r vs 50mm Lenses by geesbert

Image
The 50mm Lens Candidates
geesbert puts the new Sony A7r up against a multitude of 50mm lenses. The list of thirteen (13) 50mm lenses used on the Sony A7r is as follows:
Canon EF 50mm f/1.2Canon 45mm f/2.8 Tilt/ShiftLeica 50mm f/2.8 Elmar MLeica 50mm f/3.5 Elmar ScrewmountLeica 50mm f/2 Summicron MLeica 50mm f/1.4 Summilux MOlympus OM 28-48mm f/4Olympus OM 50mm f/1.4Olympus OM 50mm f/2 MacroPentax SMC-A 50mm f/1.4Minolta Rokkor 58mm f/1.2Minolta 40mm f/2 Rokkor-MSony 50mm f/1.8 E-mount
geesbert has a great setup which shows the lens being tested. He took shots from wide open up to f/5.6 aperture.

Sony Alpha 7r vs 50mm Lenses
Thanks geesbert!



Sony A7 and A7r Hands On at PhotoPlus Expo

Image
Sony A7r with a Voigtlander 12mm Lens and Viewfinder
It was a very crowded Sony booth at PhotoPlus. The great thing was the Sony representatives were very accommodating to anyone who wanted to play with the new Sony A7 and A7r. We had our bag of lenses and was able to mount them all on the A7 and A7r - check out the 12mm viewfinder on the A7r above. The lenses include the following:

Voigtlander 12mm f/5.6 Leica Thread Mount on a helicoid adapter.Voigtlander 35mm f/1.7 Ultron LTM.Minolta 24mm f/2.8 Rokkor MD.Contax G 28mm f/2.8 Biogon.Contax Zeiss 85mm f/1.4 Planar with the Metabones Speedbooster and the standard C/Y adapter.Zeiss 12mm f/2.8 Touit Distagon.The cameras were pre-production and the use of memory cards to record the images was prohibited. We wanted to see if I could see immediate problems on the rear tilting lcd but none were glaring.  The only noticeable issue was color shift with the Contax G 28mm Biogon.  We're hoping that this can be remedied with the production m…