Ok, you know you're near the saturation, and how do you use that information? Remember you intended to combine two pixels data into one. But you got 7 photons/electrons instead of 8. But you know you lost some information. And?..
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Canon EOS R5 Specifications
- Thread starter Canon Rumors
- Start date
The sensor has already done it for me, by compressing the response curve in the highlights.
I haven't lost information, I gained it. I know that the signal lies in the range
7-sqrt(7)..7+sqrt(7), not 8-sqrt(8)..infinity.
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Well capacity of modern sensors is usually greater than 2^14 = 16384 electrons if this is what you were asking. For example, 5DIV vs A7RIV
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When I sold mine in Sept 2017, the going price for excellent used in the UK was £4,200-£4,500. Art Morris had posted then on his site, where people do buy and sell used lenses, that the price of the 300/2.8 II had collapsed
The price on the top two UK sites for used gear is now £3,100 to £3,500 for really good ones ($4000-4500). There was greater availability before Christmas.
https://www.mpb.com/en-uk/used-equi...-fit-lenses/canon-ef-300mm-f-2-8-l-is-ii-usm/
Excellent £3,500
https://www.wexphotovideo.com/search/?q=canon+EF+300mm+f/2.8+II&search_type=Used
The lightly used (grade 9) are £3,099 to £3,499. (Wex always understates the condition, my experience of their “lightly used” grade 9s is that they look mint).
ps Just checked Art Morris's recent sales: "Charlie Curry sold his lightly used Canon EF 300mm f/2.8 IS II USM lens in like-new condition for only $3299.00"
Last one sold on eBay USA 17 Jan 2020 "excellent plus" $3,919.
Canon EF 300mm f/2.8 II IS L USM Lens for sale online | eBay UK
Find many great new & used options and get the best deals for Canon EF 300mm f/2.8 II IS L USM Lens at the best online prices at eBay UK! Free delivery for many products!
I don't post unless I am sure of my facts.
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And what do you do with this information? In the end you need to assign a value to the pixel. Also if the values were 8+2 so you got 8 clipped at 4, 4+2 =6 instead of 10. 6 + sqrt(6) < 10, so your calculated range is wrong.
You're simply getting lower values in the blown out parts of the image.
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I'm not sure what you think I think. Why would I think sensor manufacturers were idiots?? You asked if there's enough well capacity to feed 14 bit ADC, if I understood you correctly. Yes there's enough electrons. All good. And?..
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7 is good enough.
No, it just tells that you chose the values with the difference too big for typical shot noise. So, have you switched to talking about inadequate spatial resolution of the bigger pixel sensor this time?
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I suspect the answer is more dependent upon whether the IBIS system CAN be implemented inside a DSLR. Can the mechanics necessary for IBIS fit in the same 5D body whilst still sharing that space with a mirror box? I dont know the answer to that.
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I’m not going to pretend I have any idea what you guys are talking about but I did have a question. Do you find the DR in Canon’s current 30mp sensor insufficient for your needs photographically or is this more of an intellectual exercise? Not being snarky I’m actually curious to know. So far I feel like the noise in the current Canons I own is very well controlled and I don’t really have any issues. I’m not a traditional landscape photographer so I’m probably not pushing the boundaries. I’m assuming if the new sensor doesn’t lose any ground to the current 30mp than it’s all good. I know the Sony’s are technically superior but, other than the 7D2, I don’t currently have any DR issues.
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This R5 and R6 I'm betting will be on demo at CP+ in 4 weeks. Ship date in July. Why? Olympics in Tokyo Start Fri July 24th, 2020 ..... Feb 13th official announcement by Canon is rumored...
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I'll respond just because I take a lot of no flash photos in my dark apartment of my grandson and this is the only place where noise might be an issue for me. I find the R's sensor to be very good. The hardest I push it is to ISO 6400 though I have gone to ISO 10,000. Unless I pixel peep the files are great. My 5D Mark III was not near as good as the 30mp sensor in my opinion. I can't get technical. These other guys are able. I can only say what I believe practically.
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That’s about where I am. I’m still reworking 5D3 flies trying to manage the noise, banding and such but I’m fine with the newer sensor. I have an APSC camera with a Sony sensor and I guess maybe it’s a little better but not so I’d really notice. Certainly not like the difference between the 5D3 and 5D4.
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I’m really hoping the layout is something along these lines. That new AF trackpad joystick on the 1DX3 looks killer!
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FujiFilm X-T4 and new Sony A7S are also rumored to be announced in the same period. Canon would probably like to get something out to the press at the same time even if it’s not ready to ship. Worked in my case. I’ll probably delay picking up an X-T4 until I see how the new Canon’s play out.
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That's the amazing part: With all the debate between larger and smaller pixels and how smaller pixels result in more noise, the 30mp sensor beats the 20mp sensor in my eyes. Not saying their debate is not valid, just that the tech advancements are making this possible. It may very well be that the new 45mp sensor rumored for the R5 beats the 30mp sensor in the R. That will be interesting to watch. In my opinion the new sensor will trounce the 5DS(r) sensor in that regard.
In addition, I have been very happy with the ability to crop more and still get fantastic output compared to the 5D Mark III. I'll never be able to get an R5, but maybe a Mark II.
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