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Ryan2tawfiq · Aug 20, 2019

docholliday said:
For all electronics, I don't use rice OR silica gel - they will only pull moisture out of the surrounding air hoses until about 10-15% humidity remains. I prefer to use 1.5-3.0A molecular sieve with the item in a tight mylar pouch and heated to about 105F (or the max the item will take safely). It will pull down to almost 2%. Used mostly by chemists to desiccate fluids (pulling water out of petroleum in a column), but decently cheap. This is the place to by it from: http://www.sorbentsystems.com/ . I use their siilca gel boxes in my camera cases, but for any electronics I'm repairing that has been water exposed, sieve is the way to go.

Even on my 1Ds3, the "sealing" is nothing more than foam rubber strips and mylar adhesive tape at the joints. I had the camera sent to Canon CPS ages ago and they did a shutter replacement. However, when I pulled the camera apart recently, the "seal" tape was torn at the seams between the cover and body, but never replaced when they serviced it. So, I laid the ripped pieces onto a sheet of 3M 200MP, traced it out and replaced all the pieces around the camera. Then, cut new (denser) foam rubber strips and filled in all the gaps. Now, it's much more water-resistant than before.

Moral of the story is that even if it's been back to CPS, don't trust that they'll fully make it water-resistant if not necessary! I've hosed mine down with a garden hose with a 70-200/2.8L II on with no problems (and of course, a nice tight Heliopan filter on the front, even though not needed). Just remember that seals DO shrink and DO get old/brittle/crumbly over time. It is a combination of the film tape, foam rubber strips, AND rubber grips (on the outside) that make the combo more water"proof". The rubber pieces tuck down into grooves and some of the joints are between pieces. With enough water and/or pressure, water will still penetrate the joint.

NOTE ABOUT THE HOTSHOE: at least on the 1Ds3 - the area where the shoe is mounted is screwed down tight and "sealed" with some caulk/glue. As is the area around the lens mount. The DoF preview button is also sealed with this glue. There is no need to add any additional sealing on the 1 series. However, I have a small rubber hotshoe level that slides in - it keeps the top from getting scratched, gives me a simple level, and keeps water out of the left/right rail should it get dampened.

After seeing this, I wouldn't trust any of the lower cameras to any water - anybody who has a "survived it" story was just lucky and their body was probably pretty new.

In case somebody wants to see what the "sealing" looks like: go here. The light grey tape pieces are the Canon original seal (the tears are directly along the case seams!) and the dark tape is the 200MP that I was tracing/creating with.

Waterproof appraisals are dictated by the dress maker or texture maker, with testing done.

Aug 19, 2019

sdz said:
It was believed by many that the R line was a knee-jerk response to the threat Sony posed to Canon's camera businesses.

It was believe by many who have no understanding of product development timelines.

Quirkz · Aug 19, 2019

3kramd5 said:
I often wonder how much of that is truly “overstating” of ISO rating and how much is variation in T-stops.

Hmmmm that’s an excellent point I’d not considered.

nchoh · Aug 19, 2019

Quarkcharmed said:
In your message https://www.canonrumors.com/forum/i...e-using-dpaf-sensors.37447/page-2#post-787800 you never said it was about a whole row. You were talking about one pixel. In one row that's unlikely of course. But in two half-pixels or in several adjacent half-pixels - easily.

Yes, true. I just didn't know how to explain at that time... sometimes, taking an experiment considering just one pixel does not make sense when expanded to the whole sensor.

That said. It seems that many people are not reading the article correctly. It is about amplification during read.

The amplification of one half of the pixel could also mean de-amplification of the other half, so that the pixel as a whole would be at the "correct" exposure". Blown out pixels would still be blown out on the amplified pixel but would have information on the de-amplified half-pixel. And vice-versa for pixels that are too dark for any information. That would give expanded ISO.

Mt Spokane Photography · Aug 18, 2019

thibaut said:
Do you think there will be a 5Dmk5 or 5DSR mk II ?
Because I would be happy to have new EF lenses but if their is no new DSLR coming, why would they produce new lenses ?

I know we are a lot with EF lenses and a lot of us will not switch to Mirrorless soon. But will Canon listen to us ?

New DSLR's will come, but sales of enthusiast models is dropping. This is sending a message to both Canon and Nikon that buyers are holding off to see what a enthusiast model of a mirrorless will be like. Pressure is on Canon to get those models out, they need the sales.

Canon has virtually all of their lens design teams working on lenses for mirrorless. The patents we see are the result of work being done 3 years ago and submitted for a patent 18 months ago. They are basically a snapshot of the past and not today's thinking.

However, new EF lenses will be produced. There are a huge number of EF bodies in use and many will want new lenses for them. The problem right now for Canon is to get as many RF lenses as possible to the market. They sell for higher prices and there is strong demand.

Sporgon · Aug 17, 2019

Mikehit said:
Stephen Elliott
Robin Whalley

And more if you search for 'landscape photographer micro four thirds'

Then portraiture, wildlife :
Damien McGillicuddy
Andy Rouse (a recent convert) - he was happy using Canon EOS-R but felt the frame rate was limiting for some action shots
Joe Edelman
Daniel Cox

Many thanks for these, I'll check them out

Phil Indeblanc · Aug 16, 2019

Wow, I love such a feature. Used to have it on the 1Ds I think. I was only doing studio then, and still found some use for it.

Sporgon · Aug 16, 2019

Another vote here for the EF 100/2 USM

SecureGSM · Aug 15, 2019

I never say trust me.. I never do.. but:

trust me, this is the most reasonable option for a run and gun situation as it is super light, allows you to shape your light as you pleased, and does not make the camera handling unwieldy. unless there is a nice and white ceiling 8 to 11 feet overhead

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unfocused · Aug 14, 2019

Interesting. I bought a couple of their CFast cards and have had no problems at all with them.

Kit Lens Jockey · Aug 14, 2019

I know the original review is old at this point, but I am so damn tired of the line "This f2 zoom can replace a whole kit of primes." Yeah, except this zoom is still about a stop and a half slower than Canon's best primes.

Ozarker · Aug 14, 2019

PC?

dickgrafixstop said:
Don't forget that consumer cameras are an ancillary business with Sony. Anybody want a good deal on a Sony PC?

Does that mean piece of crap?

Aug 13, 2019

Naturally the 1DX2 would be my preferred choice - but they are pricey!

Have you considered the 1DX Mk1? Currently I use a 7D2 and 1DX (Mk1) and for the majority of the time the 1Dx is the better camera by a significant margin. Note I am very focal length limited as Canon do not currently make a longer lens than the one I have. Yet, despite the lack of pixel density and wider field of view it outperforms my 7D2 in all but ideal conditions. As to the AF? It is a no brainer the 1DX is just better - a lot better.

The 1DX Mk1 is not silly money these days - just food for thought?

raistmaj · Aug 13, 2019

Finally! This is more than welcome feature for someone with the behemoth and the 50mm1.2

Ozarker · Aug 13, 2019

GenaroHic said:
What do you mean by bread and butter lenses btw?

He probably means lenses that are not going to cost $7,000 and sell very few copies... except for the big tele lenses for birding and sports. A RF 70-200mm IS f/2.8L would be a bread and butter lens, also a 135mm and true macro lenses. Then there's the non-L lenses. I don't mean to speak for you, Mr. Spokane, that's just my interpretation of what I think you were saying.

No disrespect intended. I hold your experience and knowledge in high esteem. I have learned a lot from many of your posts.

SecureGSM · Aug 13, 2019

Ah-Keong said:
Or maybe a new mount for Medium Format to challenge Fujifilm

I lock the option 'E" : none of the above

justaCanonuser · Aug 13, 2019

Kit. said:
But doesn't that mean that one needs to reshape the lens surfaces in order to refocus the lens? Hardly feasible for general photography.

Also, the illustrations in the article suggest that the formula might not be suitable for off-axis objects.

Sorry for the late reply, I have the same impression like you. But I can imagine that intelligent optical elements made of flexible materials (like the lenses in our eyes) may utilize such a formula even for bigger lenses. On the other side, I am pretty sure that algorithms that control the shape of such a lens will most probably based on numerical mathematics, not such an attempt to tackle that problem analytically.

Another approach is to correct all types aberrations during post-processing, as it is already done with chromatic aberrations since many years. That's the most probable approach IMO, because it allows for simpler and cheaper lens designs.

ajfotofilmagem · Aug 9, 2019

alexmatthewfilm · Aug 9, 2019

Does anyone know if the EOS R does 8bit 4:2:2 externally in 1080p?

Memirsbrunnr · Aug 9, 2019

magarity said:
While all very witty, this is a real potential problem that is good to have fixed for some people. Canon's Hong Kong local site has a longer explanation: https://hk.canon/en/support/security-advisory-ptp-communication-and-firmware-functions/notice
Notice that if one has an 80D connected live to a smartphone / tablet / laptop and trying to beam out pictures of protests, etc, then state security has the resources to pull off this kind of hack and see what one is recording. Same for similar places around the globe. So yeah, good patch.

Still an utter fringe nano scale problem. Rather had a small functionality update upgrade.

SecureGSM · Aug 8, 2019

Michael Clark said:
Nobody disputes that 1080P televisions were an excellent entry point into watching TV 10 years ago. But today, in 2019 they are simply totally antiquated tech and 4K/8K TVs are the only thing TV makers need to offer to get new buyers into their ecosystem and retain market leadership.

See how silly that sounds?

actually... you got me there for a second! until I read the last bit being: See how silly that sounds? phew....

Mt Spokane Photography · Aug 8, 2019

This must be a record, someone replying to a post from 2010. I'm sure its still a current topic

Aug 8, 2019

sdz said:
Ah, a member in good standing of the Internet Tough Guy and Borderline Sociopath Association drops by to provide us with more strawman arguments, which is to say, BS.

You’re still saying, “Blahhh haa, ha,” and it hasn’t become any less moronic through repetition.

Hameri · Aug 8, 2019

As I understand it, the XC10 will output 10-bit from its HDMI. I read canon xc10 specs but want to hear your mind. Has anyone compared internal 8-bit to external 10-bit recording?
Thanks.

caffetin · Aug 8, 2019

Kit. said:
I see no reason why they might be bad for macro photography. Any particular concerns?

well,i found it somehow pleasered.32,5 mp,but after using dslr`s just feeling me unsure to make the change.only question is would I can mount the ef lenses(prob will be some adapter)

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