Recommend 35mm lens for Alpha 7

[Spacemaster]

Hi Guys, thanks for all the leads. Will check them out further. Quick researching on the internet seem to say that the CV35/1.4 is somewhat soft but the CV35/1.2 is really a bit too heavy (Sigma review very good but see too big including the adapter and too heavy also).

Anyone with some experience and photo to share about the CV35/1.4 would be great.

When i was there i tested 1.2 & 1.4. So u can test it there no rush. Found imo 1.2 did look to have sharper images

 

[ziggy]

However, I understand the lure of faster 35mm glass. I have the Zeiss 35/2 ZM. It's compact, but heavy and doesn't work well with the A7r especially in the corners. In fact, the Summilux 35mm also doesn't work well in the corners with the A7r according to numerous reports. So, generally I would stay away from the compact rangefinder glass at 35mm. Although many have reported good results with the VG 35mm 1.4, I would be careful because there have been reports of field curvature making the sides blurry.

I just bought an A7 yesterday. Vignetting on my Leica 35 cron is minimal while on the 35FLE looks quite serious when shooting white walls. My shots on the 35 'cron today looked OK even at f2. Have not brought the 35FLE to test yet even though I tested it at the shop. Perhaps this combo is not good for landscape but I don't shoot landscapes at f1.4 anyway.

There seems to be no problems with SLR lenses though so maybe the way to go is to get old Canon/Nikon/Contax 35mm. I have not tried the Voigtlander so cannot comment.

 

[rko]

There is no AF when using adapters like the Voigtlander. It will only meter using Aperture priority or Manual.

hmm, can share how does it meters since the camera dosent know the aperture? Or perhaps if the lens is at f2, we need to manually enter F2 on the camera settings? Thanks

 

[ziggy]

hmm, can share how does it meters since the camera dosent know the aperture? Or perhaps if the lens is at f2, we need to manually enter F2 on the camera settings? Thanks

Before the Canon EF and Nikon G lenses, all lenses have an aperture ring. On Aperture priority, you set the aperture on the lens, the camera meters the exposure and automatically sets the shutter speed. Or on Manual mode, you set both the aperture and shutter, according to the meter.

 

[Spacemaster]

hmm, can share how does it meters since the camera dosent know the aperture? Or perhaps if the lens is at f2, we need to manually enter F2 on the camera settings?

Thanks

Voigtlander lens is manual lens so it has its own aperture ring. U can control aperture size even when not connected to the camera. I personally prefer lens with aperture ring.

The camera will show f0 but as u increase aperture size the shutter speed increase accordingly. My explanation is very layman but it just works

 

[Spacemaster]

http://m.youtube.com/watch?v=PxGeiqM7a3Y

Voigtlander 35mm f1.4 focusing with a7r

 

[syke]

hmm, can share how does it meters since the camera dosent know the aperture? Or perhaps if the lens is at f2, we need to manually enter F2 on the camera settings? Thanks

Wow, I guess you must be new to photography. I got lost with your question for a moment.

 

[rko]

Wow, I guess you must be new to photography. I got lost with your question for a moment.

lolx. not exactly new, just that never really went into the workings of a camera.

A picture's brightness is determined by the ISO, Aperture and the Shutter Speed. While using the EVF, the camera gets these 3 datas. Coupled with the light measured on the sensor, the camera is able to give an adjusted live-view image.

However, if we are to use an adaptor which dosent transmit the aperture, then how does the camera compute the correct live view image?

 

[mindeyes]

Just got my A7 + Zeiss 2470 + SEL1018

I mounted my NEX 6 Zeiss 24/f1.8 on the A7 amd shot in crop mode (so equivalent to 35mm with a light gathering speed of f1.8) and the picture turned out fantastic even though its only 10MP!

I am wondering now if I should still buy the full frame CV 35mm/f1.4?

 

[ziggy]

A picture's brightness is determined by the ISO, Aperture and the Shutter Speed. While using the EVF, the camera gets these 3 datas. Coupled with the light measured on the sensor, the camera is able to give an adjusted live-view image.

However, if we are to use an adaptor which dosent transmit the aperture, then how does the camera compute the correct live view image?

Controlling the aperture can be mechanical, before the invention of auto exposure. Most lenses have an aperture ring on the lens itself which you manually adjust. The camera reads the light being let in, not the f-stop of the lens.

With an adapter, the f-stop reading is 'f-'. That is why it works only in Aperture of Manual modes, but not the rest like Shutter priority, Auto, Program etc as this require electronic linkage from the lens to the body's computer.

 

[silvermoon1407]

lolx. not exactly new, just that never really went into the workings of a camera.

A picture's brightness is determined by the ISO, Aperture and the Shutter Speed. While using the EVF, the camera gets these 3 datas. Coupled with the light measured on the sensor, the camera is able to give an adjusted live-view image.

However, if we are to use an adaptor which dosent transmit the aperture, then how does the camera compute the correct live view image?

Sony is just damn good. The sensor grabs whatever light it is exposed to and adjusts SS and/or iso depending on the mode u are in.

 

[wheresmycheese]

Sony is just damn good. The sensor grabs whatever light it is exposed to and adjusts SS and/or iso depending on the mode u are in.

there you have it. the answer

 

[mindeyes]

Hi, does anyone know if the Sigma 35mm f1.4 with the LA-EA-1 adaptor can autofocus on the A7? Trying to decide between the Sigma and the CV. Thanks for any help.

 

[mindeyes]

Sorry, forgot to mentioned I already go the LA-EA-1 adaptor long time ago.

 

[ricleo]

Sorry, forgot to mentioned I already go the LA-EA-1 adaptor long time ago.

believe the LAEA-1 is for APSC and not full frame. AF is possible but will be the slow CDAF like what metabones does for canon EF to e mount adaptors.

 

[litlefiter]

Hi, does anyone know if the Sigma 35mm f1.4 with the LA-EA-1 adaptor can autofocus on the A7? Trying to decide between the Sigma and the CV. Thanks for any help.

I don't have the LA-EA-1 but I have the 4th version of it that works with the A7 to give PD AF. I use the sigma 35mm f1.4 on it and its AF speed is similar to what you get on a DSLR

 

[bonafit]

believe the LAEA-1 is for APSC and not full frame. AF is possible but will be the slow CDAF like what metabones does for canon EF to e mount adaptors.

LAEA1 AND LAEA2 ONLY FOR APSC E MOUNT, NOT FOR FULLFRAME E MOUNT BRO..