A possible switch? Canon 6D to Sony A7

[Solarflare]

Eh, I wouldn't be to sure with the improved AF on the newer Sony's.

Compared to a real DSLR ? Sorry, no mirrorless can keep up with that right now. They offer great AF-S, but AF-C is still the domain of DSLR. There are *some* hopes this might change (specifically Canon's Dualpixel technology), but so far its only hopes, not reality.

 

[ConradM]

Eh, I wouldn't be to sure with the improved AF on the newer Sony's.

Compared to a real DSLR ? Sorry, no mirrorless can keep up with that right now. They offer great AF-S, but AF-C is still the domain of DSLR. There are *some* hopes this might change (specifically Canon's Dualpixel technology), but so far its only hopes, not reality.

Are we talking AF in general now? You should google the a6000.

 

[Solarflare]

I'm talking of AF-C, following fast moving subjects in close proximity, even worse under bad light.

 

[ConradM]

I'm talking of AF-C, following fast moving subjects in close proximity, even worse under bad light.

Again, do some research. The a6000 is boasting the fastest AF or AF tracking of any system right now. Although the just announced a77 MKII might be faster.

 

[ConradM]

The difference in body weight is about 200 grams. When you consider that lenses can often weigh more than the camera body... it may not be as big of a deal as you are hoping.

Another consideration (since you mentioned low light usage) ... the Canon 6D can auto-focus all the way down to EV -3. The A7 goes down to EV 0. That's a pretty noticeable loss in auto-focus performance if you switch.

I found that having a comfy strap really made the biggest difference. I didn't like carrying a heavy camera & lens very long when I had a factory strap. I picked up a Black Rapid sling-type strap and this made a huge difference. No longer mind carrying the camera all day.

I just read that the A7s will AF down to -4EV.

 

[gsgary]

I'm talking of AF-C, following fast moving subjects in close proximity, even worse under bad light.

That is not what this camera is for

 

[TCampbell]

The difference in body weight is about 200 grams. When you consider that lenses can often weigh more than the camera body... it may not be as big of a deal as you are hoping.

Another consideration (since you mentioned low light usage) ... the Canon 6D can auto-focus all the way down to EV -3. The A7 goes down to EV 0. That's a pretty noticeable loss in auto-focus performance if you switch.

I found that having a comfy strap really made the biggest difference. I didn't like carrying a heavy camera & lens very long when I had a factory strap. I picked up a Black Rapid sling-type strap and this made a huge difference. No longer mind carrying the camera all day.

I just read that the A7s will AF down to -4EV.

Sony's own spec on the a7 (from their website):

• Focus Sensitivity : EV 0 to 20 EV (at ISO100 equivalent, with F2.8 lens attached)

Canon's is -3 to 18 EV for the 6D.

The thing about the Sony cameras is that semi-transparent mirror that doesn't flip out of the way. It reflects a fair percentage of the light out of the image path in order to send it into the focus and metering sensors. You can't bounce it out of the imaging path AND deliver it to the sensor at the same time. It's estimated to be around 25-30% of the light which is about 1/2 stop (50% would be a full stop). That's the physics of it (there's no getting around the fact that they do it). But to still get good pictures (and they do) they would likely have to make up for that by boosting ISO gain... then compensate by smoothing noise and perhaps performing some edge sharpening. Of course... you can apply noise reduction and edge sharpening with any photo regardless of the camera used to take it... but those other cameras probably got all of the light delivered to the sensor.

 

[ConradM]

The difference in body weight is about 200 grams. When you consider that lenses can often weigh more than the camera body... it may not be as big of a deal as you are hoping.

Another consideration (since you mentioned low light usage) ... the Canon 6D can auto-focus all the way down to EV -3. The A7 goes down to EV 0. That's a pretty noticeable loss in auto-focus performance if you switch.

I found that having a comfy strap really made the biggest difference. I didn't like carrying a heavy camera & lens very long when I had a factory strap. I picked up a Black Rapid sling-type strap and this made a huge difference. No longer mind carrying the camera all day.

I just read that the A7s will AF down to -4EV.

Sony's own spec on the a7 (from their website):

• Focus Sensitivity : EV 0 to 20 EV (at ISO100 equivalent, with F2.8 lens attached)

Canon's is -3 to 18 EV for the 6D.

The thing about the Sony cameras is that semi-transparent mirror that doesn't flip out of the way. It reflects a fair percentage of the light out of the image path in order to send it into the focus and metering sensors. You can't bounce it out of the imaging path AND deliver it to the sensor at the same time. It's estimated to be around 25-30% of the light which is about 1/2 stop (50% would be a full stop). That's the physics of it (there's no getting around the fact that they do it). But to still get good pictures (and they do) they would likely have to make up for that by boosting ISO gain... then compensate by smoothing noise and perhaps performing some edge sharpening. Of course... you can apply noise reduction and edge sharpening with any photo regardless of the camera used to take it... but those other cameras probably got all of the light delivered to the sensor.

For one, you didn't search the specs on the a7s -

• Focus Sensitivity : EV -4 to EV 20 (at ISO100 equivalent, with F2.0 lens attached)
• Focus Area : Wide (25 points) / Center-weighted / Flexible Spot (S/M/L) / Zone
• Focus Points : 25 points (contrast-detection AF)
• AF Modes : Single-shot AF (AF-S), Continuous AF (AF-C), Direct Manual Focus (DMF), Manual Focus (MF)
• Focus System : Contrast-detection AF

and two they're mirror less.

 

[gsgary]

Eh, I wouldn't be to sure with the improved AF on the newer Sony's.

Compared to a real DSLR ? Sorry, no mirrorless can keep up with that right now. They offer great AF-S, but AF-C is still the domain of DSLR. There are *some* hopes this might change (specifically Canon's Dualpixel technology), but so far its only hopes, not reality.

Do you need AF-C for a shot like this ?

 

[gsgary]

He's one i have just shot with my canon 70-200 fitted be with the cheap adapter aperture cannot be adjusted but i think with the Metabones adapter it would be quite special