My pet peeve in bokeh is things like onion rings, and severely football-shaped highlights in the corners. What part of bokeh are you saying can be determined from MTF and how?
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Canon Officially Announces 4 new RF Lenses
- Thread starter Richard CR
- Start date
And people with pacemakers are advised to be careful around them.
It would not be a legal thing if it was not an actual risk.
Nikon has the same warnings.
At least Canon has other choices and VCM in the name.
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Sharpness is just a subjective description. The resolution of a lens can be defined numerically in terms of line pairs/mm or line widths per picture height on a particular sensor. Look at the plots on opticallimits.com, for example, where the y-axis is defined as lw/ph, and they have some explanation.
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Exactly what I have been thinking. Idk how anyone is shocked by the price. People really want to go back to the DSLR days of a rebel and their 50 1.4 that never really worked, taking pictures of flowers and their cat.
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Just sent in my pre-order. The bit about how they had designed this with astrophotographers in mind obliterated any resistance I tried to put up in the defence of my wallet. Nightscapes are a special focus of mine. I've been using my RF 15-35 f2.8L. This 24mm is not as wide, but those two extra stops make a huge difference in nightscapes.
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Canon seem to have dropped fluorite elements from most lenses. Probably found a way to achieve the same image quality without expensive fluorite elements.
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Yeah digital corrections for dark corners or barrel/pincushion is a fact of life now, another tool in the manufacturer's toolbox.
The 24-105Z specifically is also designed to have black corners at 24mm. According to https://www.photonstophotos.net/Gen...ample04P.txt,figureOpacity=0.25,AxisO,OffAxis, the full image height at 24mm is 41.6mm, while at the other zoom locations it is the full FF image circle of 43.2mm.
It looks like the 70-200Z projects the full image circle across the zoom range.
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That's not 4 lenses, that's 3 lenses but 1 lens comes with two different skins.
To say it is 4 lenses is to say that the 6 different color iPhones are 6 different iPhones.
Sheesh, the cheap marketing tricks you guys pull.
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Well, black for studio, white for using outside. Canon advertises the white lens as having a "thermal shield", due to its traditional white special painting, so I wouldn't trust the black lens to withstand prolonged exposure to the sun as well as the white. There's definitely more to it than mere aesthetics.
I expect seeing this 50mm below 1100€ within less than a year, on decent rebates.
I've been consistently able to purchase my RF lenses with 30 to 40% off the MSRP, without having to resort to grey imports, with the exceptions being my 28-70 f/2, that got close to 50% off, and a RF 135mm that I got today for a little over 50% off the MSRP.
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Scroll down a little bit before you go off the deep end.
RF 24/1.4 VCM
RF 50/1.4 VCM
RF 70-200/2.8 Z in two colors
RF-S 7.8/4 VR
By my count, that’s four. But I did learn to count many decades ago, so maybe it’s done differently these days.
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I've had my EF 50/1.4 since 2003. Not the greatest lens in the world, though it does offer up a smoother bokeh than the 1.8 lenses of the time.
Looks like its time to replace it - although this new 1.4 is a little expensive (and I have the old 50/1.2L EF lens to fall back on), it might well prove to be a very good portrait/event lens. Actually, a 24, an 50, and something like the 135 would make a nice trio for low light events as long as you don't have to be too far from the subject.
Looks like its time to replace it - although this new 1.4 is a little expensive (and I have the old 50/1.2L EF lens to fall back on), it might well prove to be a very good portrait/event lens. Actually, a 24, an 50, and something like the 135 would make a nice trio for low light events as long as you don't have to be too far from the subject.
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Is there, though? Are you sure? The rationale for white paint was the higher thermal sensitivity of fluorite lens elements. Canon does not explicitly say that this new lens has them. There are lots of black lenses, so what in this lens requires thermal shielding? Nikon makes a 70-200/2.8 with fluorite elements, and it’s black.
Starting with the 70-300L (the first white lens without fluorite), IMO the white paint has been a marketing ploy. Other manufacturers’ use of fluorite in black lenses is consistent with that idea.
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All things considered I think Canon is doing a great job with these releases. I paid about 1700$ when the EF 24mm II came out so this is a better price than I was expecting for the new 24. It's an automatic buy for me. Let's hope Canon spoils us for choice with big whites similar to what we are seeing with this series of primes.
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AFAIK it's never been about the presence of fluorite elements, at least I never heard that.
I do know, however, that the little guides that run on the zoom helicoids in Canon zoom lenses are made out of teflon (PTFE), which doesn't cope well with high temperatures, as it can get permanently deformed with heat.
Canon clearly states the new white lens features the heat shield, as does the original RF 70-200mm
screenshot taken from https://www.canon.co.uk/lenses/rf-70-200mm-f2-8l-is-usm-z/
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Do you remember this from 2013, Neuro?
Do you wish your 70-200L were black?
Also, once sunlight has heated the object, the radiated heat is at much lower frequencies and the emissivity is more or less the same then (this is somewhere on Wikipedia). Actually it's quite the opposite [..] Wikipedia: Lighter colors and also whites and metallic substances absorb less...
www.canonrumors.com
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