EVA1: EVA1 and Canon 18-80mm autofocus issue

H

HDAleko

New member
With a Canon 24-105 lens, the EVA1 autofocus works, albeit in a clumsy manor. With the 18-80mm lens, autofocus does not work. Has anyone else encountered this problem?
 
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Off subject, but curious. My favorite lens on the C100 was the EFs 17-55 f2.8. That's why I kept it after selling the camera. A friend told me that she doesn't think it will work on the Eva1, and it isn't on the attached list above. Has anyone tried it? Not so much for continuous AF, but for one touch.
 
My 17-55 works great.

Mac said:
Off subject, but curious. My favorite lens on the C100 was the EFs 17-55 f2.8. That's why I kept it after selling the camera. A friend told me that she doesn't think it will work on the Eva1, and it isn't on the attached list above. Has anyone tried it? Not so much for continuous AF, but for one touch.
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Please note that there are likely many lenses that work without issue but are not on the chart. That's only because our engineers have not been able to test all of these lenses extensively as of yet. As they do the list will expand, and with firmware updates to the EVA1 there will be increased compatibility with more lenses.
 
Why no "L" version of the 17-55?

Looks very compelling over the Sigma, even though slower. Optical IS, more appealing zoom range, native Canon AF.
 
That's good news, because my EVA arrives tomorrow...

And BTW filmguy, of all the still camera zooms I've used (which is a lot), the EFs 17-55 is by far the best. The maximum aperture is close to a true 2.8 (probably a T 3.1), it holds through the zoom range, and it is sharper all the way to the edges than my Rokinon primes (admittedly the cheaper ones)... It does occasionally vignette very slightly on one corner at 17mm (on the C100), but it's negligible, about 102% fix if it's bothersome.
 
filmguy123 said:
Why no "L" version of the 17-55?
Click to expand...

They do; it’s called the EF 24-70mm f/2.8L USM. There are no EF-S L lenses. You’re forgetting EF-S is only for APS-C sensors and all L lenses are designed for 135 format. The 17-55 was the cheap APS-C alternative to the 24-70. Same apparent focal range with the smaller sensor...but, really it’s just a lie...like saying “full frame” in relation to a 135 format sensor.
 
JRJphoto said:
They do; it’s called the EF 24-70mm f/2.8L USM. There are no EF-S L lenses. You’re forgetting EF-S is only for APS-C sensors and all L lenses are designed for 135 format. The 17-55 was the cheap APS-C alternative to the 24-70. Same apparent focal range with the smaller sensor...but, really it’s just a lie...like saying “full frame” in relation to a 135 format sensor.
Click to expand...

Good info!
 
No IS on the 24-70.

JRJphoto said:
They do; it’s called the EF 24-70mm f/2.8L USM. There are no EF-S L lenses. You’re forgetting EF-S is only for APS-C sensors and all L lenses are designed for 135 format. The 17-55 was the cheap APS-C alternative to the 24-70. Same apparent focal range with the smaller sensor...but, really it’s just a lie...like saying “full frame” in relation to a 135 format sensor.
Click to expand...
 
The 17-55 is an interesting lens because it checks all the boxes, except it's not an L lens (although it does apparently have L glass). It's gotten such great reviews that, with the introduction of the C Cinema Cameras, I'm surprised they didn't produce an L version to satisfy the fussy users of those cameras.

The down side of the EF-s lens series is (supposedly) build quality - including dust exclusion, moisture resistance and a tendency to unintentional zooms when tilting the camera. I've had mine for over 5 years, used it regularly on the C100, and with a Speedbooster (f1.7!) on both the Pocket and Micro BMD cameras. I've never experienced any of those "build quality" issues. Maybe I just got a good one. It is very sharp and handles backlight flare extremely well.
 
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