Patent: Multiple small RF prime lens optical formulas

DON'T !!!!:eek::eek::eek:
I have the 21 Leica M lens (non-aspherical).
Mounted on the EOS R, it generates a reddish hue on the sides of the pictures, like all M lenses below 35 mm, you can even see it in the viewfinder!
The Leica sensors have therefore specifically oriented microlenses against this phenomenon.
Maybe (?) the asph. type behaves differently, even though I doubt it.
PS: the Leica R 21 mm is not really good...
Thank you Del Paso... As soon as I really used the Voigtlander Skopar 21 -- I returned it to the dealer. Terrible magenta in all corners and Adobe RAW could not remove it by profile. Then I went to eBay and bought another Canon 20mm f2.8 -- a treasure of a lens!
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Industry News: The upcoming Leica SL2 product images and specs have leaked

My opinion: mechanically the best SLRs ever made, along with the Nikon F2.

Yes and no. The Leicaflex SL has a very nice Viewfinder, pretty bright. But the shutter is known to be a problem. Mine died some years ago and was repaired by Leica Customer Service without fee, they did it obviously only for fun. :-)
The Leicaflex SL2 is mechanically really good, some people would prefer the Leic R 6.2. The Nikon FM3a is perhaps the best analog Nikon ever made, absolutely comparable to the Leicas.
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Autofocus on canon 5d mark iii In the Corners Of the screen

With the newer touch screen cameras, one button to enter liveview, touch the person or area on the image you want to focus on and it takes the photo instantly. I don't see that as difficult, I do it all the time. You only need turn on liveview once, from there on, just touch the screen on the focus spot. Exposure is better too, it averages around the area of the focus.

I also have a EOS R. the main difference is that it is in live view all the time, and I can use the viewfinder.

I Never Experience this feature''Liveview'' And i mistake it to the video mode,/view, Thanks to your patient And Grace I found out The meaning of it ,So as of now it's new to me ,

From a first glance It look Similar (But probably far from it) To what mirrorless camera do,
i will Explore it when i can ,and i hope I will managed to be smooth with it and it to be Accurate like the auto focus ,

Since i can't Zoom Through The viewfinder manual focus I have to depend on my eyesight and i can't Trust Myself Without zooming ,
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Canon officially announces the EOS 90D and EOS M6 Mark II

Is it's downsampling or doing a straight 1:1 readout? If it's a 1.63x-ish crop it should be a 1:1 readout.

From some quick measurements from the videos posted above the cropped mode does a 1.18x crop to the picture. That means that it uses around 6000 pixels in width of the sensor and judging from the warnings of overheating, it obviously performs a 6k to 4k downsampling hence the increased sharpness.
In the uncropped mode the only way to efficiently use the full size of the sensor is by pixel binning (or line skipping but it's highly unlikely). If they did a 2x2 pixel binning the resulting video will have a 6960/2=3480 pixel width and it will need upsampling to get to 4k, a 3.5k to 4k upsampling to be specific which is not great but definitely not terrible.
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Canon EOS 90D full specifications

Diffraction-Limited-Aperture
You will find "DLA" referenced in many of the DSLR camera reviews on the site. DLA is an acronym for Diffraction Limited Aperture. This aperture value is the result of a mathematical formula that approximates the aperture where diffraction begins to visibly negatively affect image sharpness at the pixel level.

Canon 80D DLA - f/6.0

The next three paragraphs of Bryan's article about DLA at The-Digital-Picture:

"Diffraction at the DLA is only barely visible when an image is viewed at full-size (100%, 1 pixel = 1 pixel) on a monitor or when output to a very large print. As sensor pixel density increases (on any brand camera), the narrowest aperture we can use to get perfectly pixel-sharp images gets wider.

DLA does not mean that narrower apertures should not be used – it is simply the point where image sharpness begins to be compromised for increased DOF and longer exposures.

And, higher resolution sensors generally continue to deliver more detail than lower resolution sensors at apertures narrower than the DLA – until the "Diffraction Cutoff Frequency" is reached. The progression from sharp to soft as the aperture narrows beyond DLA is not an abrupt one – and the change from immediately prior camera models to new models is usually not dramatic."
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Think the 90D will have faster SD card?

Pretty sure Canon isn't installing any SD cards in their cameras.

Now if you are asking if Canon is adding support for faster SD cards, UHS-II is currently the fastest standard, and its up to the consumer to purchase the fastest UHS-II card they can afford in their size choice.
Pretty sure Canon isn't installing any SD cards in their cameras.

Now if you are asking if Canon is adding support for faster SD cards, UHS-II is currently the fastest standard, and its up to the consumer to purchase the fastest UHS-II card they can afford in their size choice.
Cryhavoc and let slip the dogs of War!
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Patent: 83mp full-frame image sensor from Canon

The costs of storage and memory continue to decrease at a significant rate. When you consider that ongoing trend, the actual costs of storage don't really increase at all. It likely still costs about the same to store an 80MP image file as it cost to store a 50MP image file several years back — perhaps even a bit less.

Money not saved is money lost.

And... for those who don't need or want higher resolution Canon continues to provide lower MP alternatives that are quite fine cameras, too.

DxO PhotoLab doesn't process mRaw / sRaw, and they have no plans to support those.

Choice is good. Having to buy larger disks and/or being forced to switch image processing software isn't.
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RF 24-240mm review

And dismissing this review because it shows an effect that somebody else didn't reproduce seems a bit quick, when we don't know the details of how each result was achieved. I posted my suspicion in the other thread.
Fair point, thanks for the additional info.

It will be interesting for someone to measure the actual AoVs. If the lens profiles are cropping the resulting images, what are the resulting equivalent focal lengths before and after cropping?
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What's a good lens to shoot 360 images with on FF Canon? Fisheye recommendations?

Your hope is completely correct. Having adjusted the Nodal point correct is essential for any easy stitching afterwars, especially with wide angel or fisheye lenses, as for the most time with such focal length one will have near and far objects in the frame that need to have the same overlap (foreground to background) on the right side of one frame and on the left side of the right adjacent frame. Otherwise you will get ghost effects.

Frank
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Mode dial cap lost from 5D - advice?

1. a spot of glue (super glue crazy glue, etc.)
2. not the same according to Amazon. hover here is an original part at US$17.00 - according to item description

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Cable Release Drives me Nuts.

are you sure you're waiting long enough for the image to be processed? a 30sec exposeure also takes ~20sec to process...
What? If you have long exposure noise compensation enabled, maybe it takes twice as long as the shutter speed to get done taking a picture (because you're actually taking 2 images). But processing speed does not depend on exposure time in my 600D or 80D. Why would it?
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Canon RF 28-70 f/2L and what else?

sorry, that's what I meant. "On-Camera Flash" = Flash mounted onto hot shoe.

You would want to bounce it if you are shooting anywhere near 28mm. I really don't use flash much with this lens, since it is such a light canon, but I did do some shots with it of a still subject that required a flash and you do see the shadow if not bounced.
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Don’t trust your R in the rain :o|

I have shot a lot in heavy rain (Live in Vancouver BC area) using both the R and the RP and have not had any issues. That said I am more cautious with the RP then I am with the R and both never really get rained on for extended time as I use an umbrella when it really down pours.

Silly side note I was standing in a field on Saturday night holding my remote attached to the R trying to capture lightning (we get lots of rain but lightning is rare). When I looked around and realized I was the tallest thing in the field and I was holding a metal umbrella. I decided to pack up right after that:)
Haha, I’ve done that also, my 1d4 and I with a tripod and umbrella and the top of an arched bridge :ROFLMAO: remember I called it a day when all the lights on the bridge and the traffic lights went out. As I walked down water flowed 10cm high and drowned my shoes.
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My eyes usually glaze over...

It appears to me that ILC sales (in red) are pretty steady the last few years, although it did peak back in 2012. It's point-and-shoot cameras that are suffering, to the point where the ILC is now the majority of the market instead of being a mere niche.

This makes a lot of sense to me...there's just no point in a $100 point and shoot any more. Of course that leaves us with very high priced point-and-shoots, which strike many (including me, to an extent) viscerally as pointless. (I bought a Point and Shoot recently, but it has ridiculous optical zoom and barely fits in my pocket, so it fills a couple of niches.)
ILC's are also dropping, only Mirrorless seems sort of stable, but DSLR sales don't look good.

sw-201907_e.jpg
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My Experience: From Canon 5D4 to Nikon D850

I see he sensibly used an old 5D2, to have used a 5D4 would be rather decadent ! Surprised about the views on mirror lock up - apart from using mirror pre release on the 5DS, whenever I want full mirror lock up now I'm on a tripod and in live view anyway.

Yeah, the Live View button is a mirror lockup button that still allows you to focus, meter, and see through the lens even with the mirror up!
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My Sweet 'tater

Same opinion here, plus really nice dark framing and highlight spot in the upper middle from the trees giving a great 3D effect.
Did I get the exposure data right from the EXIF that this was shot wide open (f/1.4, 1/1000)?
Would have bet on any other value than that ;)
Yes, you got it right. I tend to add a lot of vignette sometimes and it was also cloudy. Removed three people from the photo. ;)

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