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zapper replied to the thread Canon Says it’s up to Sigma to Make Full-Frame RF Lenses.
I'm a bit jealous. I was so excited when the 18-50 f2.8 was announced that I pre-ordered it. I rarely do that, preferring to see what...
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zapper replied to the thread A New Constant f/4 Aperture RF-S Zoom Coming.
I think the value of equivalence is to understand the range of capabilities of a given set of equipment, and the relative compromises...
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zapper replied to the thread A New Constant f/4 Aperture RF-S Zoom Coming.
Yes. For complex lenses, the entrance pupil may be very different than the front element size. I'm fuzzy on the relationship; this is...
neuroanatomist replied to the thread Canon Says it’s up to Sigma to Make Full-Frame RF Lenses.
Someone on YouTube said it. I mean, that's proof, right? :rolleyes:
neuroanatomist replied to the thread A New Constant f/4 Aperture RF-S Zoom Coming.
I'm not sure that many people really care about equivalence. I certainly don't take a picture with my R1 then try to set up a completely...
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nadroj replied to the thread Canon Says it’s up to Sigma to Make Full-Frame RF Lenses.
It does seem like there's something like this going on -- but have you found evidence for it being 30%? I think we're all curious what...
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nadroj replied to the thread Canon Says it’s up to Sigma to Make Full-Frame RF Lenses.
You bet! Happy to hear you're experiencing the same. I'm over the moon with Sigma lenses on Canon bodies and I am excited for the R7...
DocInfoSci replied to the thread A Classic EF Lens Reaches the End of Production.
I think if I bought into tele primes at this point I'd switch to RF, but since I have enough nice EF gear as it is I am actually tempted...
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becceric replied to the thread Canon UHD-DIGISUPER 86 4K Field Lens.
Ahh... GAS. And weight savings!
I used to be that way about bicycles.
That lens does make my EF 11-24mm feel like the RF 40mm pancake!
DocInfoSci replied to the thread A New Constant f/4 Aperture RF-S Zoom Coming.
With the understanding and respect that people who shoot both FF and CF cameras care about equivalency, I think many of the people who...
dwkdnvr replied to the thread A New Constant f/4 Aperture RF-S Zoom Coming.
*IF* this lens has any degree of weather sealing it would solve the lens dilemma I've been struggling with and will be an insta-buy for...
danfaz replied to the thread Butterflies, Moths and Assorted Insects....
A Painted Lady found its way to my garden today.
R5II + 100-500 + 1.4x extender.
Tom R5R7 replied to the thread A New Constant f/4 Aperture RF-S Zoom Coming.
Yeah, even on in the 10D says, 17 was tight. But the standard "kit" lens 18 was even tighter. And for all the concerns about...
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rombe3jr replied to the thread Canon Says it’s up to Sigma to Make Full-Frame RF Lenses.
Canon wants 30% of the sale price as a fee for anyone using the RF mount. Pay or get sued.
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InternalRevenue replied to the thread A New Constant f/4 Aperture RF-S Zoom Coming.
I somewhat feel the same but 17mm ends up just a little too tight often enough for my video projects that I still kept and use the 15-85...
Tom R5R7 replied to the thread A New Constant f/4 Aperture RF-S Zoom Coming.
I used the Canon 17-40 f/4L on my 10D and 30D cameras back in the day. At the time, it was about the sharpest ultra-wide Canon had, with...
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Aldherrian replied to the thread A New Constant f/4 Aperture RF-S Zoom Coming.
This supposed RF-s 15-70 F4 is a lens I would have gladly bought to upgrade from the EF-s 18-135 and update the EF-s 15-85.
Both are...
neuroanatomist replied to the thread A New Constant f/4 Aperture RF-S Zoom Coming.
It doesn’t scale like that, as @AlanF stated. For example, my RF 100-400mm f/8 has a front element of ~50 mm in diameter. 400 mm / 8 =...
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zapper replied to the thread Canon Says it’s up to Sigma to Make Full-Frame RF Lenses.
Thanks for the clarification - this helps a lot. I've noticed that the lens corrections appeared to be working despite what I thought...
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phree_ed replied to the thread A New Constant f/4 Aperture RF-S Zoom Coming.
How I would have liked a replacement to the 15-85 for my R7 but sorry Canon - too late. I got tired of waiting and just three days ago...
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zapper replied to the thread A New Constant f/4 Aperture RF-S Zoom Coming.
But no commercial lens is a simple lens. In a complex lens, the size of the rear and intermediate elements can scale with sensor size...
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mb66energy replied to the thread A New Constant f/4 Aperture RF-S Zoom Coming.
15-70 f/4 would be a great video lens for me - especially when it is equipped with motorized zoom (PZ). Could "replace" the cinema lens...
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zapper replied to the thread A New Constant f/4 Aperture RF-S Zoom Coming.
Right, if D = f/N, (D=entrance pupil, f=focal length, N=f number) and f and N both are scaled by the same crop factor for an equivalent...
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kreb's cyclist replied to the thread Will it Finally Happen? A New Macro Lens Longer Than 100mm With Variable Magnification.
If this turns out to be true, this would be an instant purchase for me. I've been using the old EF 180mm for years.
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nadroj replied to the thread Canon Says it’s up to Sigma to Make Full-Frame RF Lenses.
I did quite a bit of research on this when I bought the Sigma 17-40mm f/1.8 and while it's difficult to find solid answers, what I found...
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