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Irix 45mm F1.4 lens review

My first 35mm camera was a Yashica rangefinder with a fixed 45mm lens. I took many of the best pictures I have ever made using that camera. The diagonal of the image frame (film or sensor) is about 43mm, so this really is a "normal" lens by that guideline. This lens sounds good, but since I don't ever find the need to shoot with my 50mm f/1.4 lens since I've gone to full frame, I doubt that I'd find the 45mm any more useful.

There was an advantage back in the '60s of using the same focal length all the time, especially one with such a normal looking view: I could previsualize my composition very easily without picking up the camera. I had the picture in mind before I looked through the viewfinder. It was probably good for my education as a photographer.
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Canon EOS R5 Specifications

An SD express card would probably work in UHS II mode if you could buy one, but they are not available yet and it would be no advantage over a UHS II card as that is the highest bus speed the camera supports in the SD slot. Also, SD Express cards will likely be priced pretty close to CF express cards at least to start. If you want to get the full capability of an R5 you will need a CF express card (and a reader).
All the current sdexpress cards we have specs for drop down to UHS-I, not UHS-II.
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Canon 1DX3 DxO Scores

Because the topic is similar I repeat here , what I wrote in this thread:

...
So, believe in [...] score - or not.
...
I believe in a tool, that I have in my hand and that I can use.
I believe in the output, that results in my skills to use this tool and in creativity.

If you take a closer look at such numerical "scores" you might find that they differ by less than 5%. Sometimes maybe more.
If you then compare this with your own eyes, you might be not able to see this 5% in test chart comparisons.
If you then think about how much % is left in your skills, creativity and patience to improve your output, maybe you come to the same conclusion as I did:
"It's me! It's me that can improve the image quality much more than some new gear."
And:
"Even if that piece of gear is 5 to 10% better, I still have to have the ability to squeeze that out of that better tool!"


So forget about charts and scores, go out enjoy the gear that you have and the pics you take with it, and if you feel limited by it and have the money, spend it...
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Believing in scores - or not

...
So, believe in [...] score - or not.
...
I believe in a tool, that I have in my hand and that I can use.
I believe in the output, that results in my skills to use this tool and in creativity.

If you take a closer look at such numerical "scores" you might find that they differ by less than 5%. Sometimes maybe more.
If you then compare this with your own eyes, you might be not able to see this 5% in test chart comparisons.
If you then think about how much % is left in your skills, creativity and patience to improve your output, maybe you come to the same conclusion as I did:
"It's me! It's me that can improve the image quality much more than some new gear."
And:
"Even if that piece of gear is 5 to 10% better, I still have to have the ability to squeeze that out of that better tool!"


So forget about charts and scores, go out enjoy the gear that you have and the pics you take with it, and if you feel limited by it and have the money, spend it...
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Delkin announces world’s first 2TB CFexpress card

Interesting, this has to be oriented to cameras like the R5 with 8K video I am guessing.
I generally download my photos after a shooting session (Walk in the yard, short day trip or the beach etc.) I just would not trust keeping a months worth of photos and more on the card and something get screwed up on my part, the camera or the card and lose it all.
In fact on vacations I carry several cards and sometimes change them out more than once in a day as I visit several sites for the same reason then download at night.
Might seem silly to some but mistakes happen.
Not silly at all! I just do something different. I take backups in portable devices daily and continue keeping the photos on the card. So on my vacation I have 2 copies. When I come back I copy them again to disk(s) and then I am free to format the card(s).
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Sony "Tough" SD cards to reduce risk of card failure?

the question for me is whether to buy cards for the R5 in advance as they are on special until the end of June in Australia (end of financial year).
The list of qualified cards for the R5 is clearly not available yet but it seems unlikely that the USH-II cards with 300mb/s will not be included ie Sandisk extreme pro and Sony tough. They seem to be the fastest available anyway.
Any thoughts? I am on the right track?

For CFe, it is much less certain as there is a small list of approved cards for the 1DXiii and they "only" deal with 5.5k raw. I am unlikely to use 8k often in the near future or maybe at all. 4k120 is more likely at times but only for short clips. Still, if I am going to invest this much then I should get something that works if/when needed. From what I can see, the write speeds vary hugely. I am guessing that a CFe card/reader will be part of a R5 bundle.

The Canon Website indicates that for RAW movie 5.5k60p Recording four CFExpress Cards are supported:
ProGrade Cobalt 325GB;
SanDisk Extreme Pro 512GB; and
Lexar 256 and 128 GB cards.

progradedigital dot com/products/cfexpress/
Max speed, size, avg speed
600MB/s Gold 120GB => Avg 145MB/s
1000MB/s Gold 256GB => 350MB/s
1000MB/s Gold 512GB-1T => 500MB/s
1400MB/s Cobalt 325GB => 1300MB/s
The avg to max speed difference is huge from 25% to 50% for gold but cobalt is pretty close to max.

Sandisk write speeds with no mention of sustained/average speed! link is:
shop dot westerndigital dot com/products/memory-cards/sandisk-extreme-pro-cfexpress-type-b#SDCFE-064G-ANCIN
64GB 800 MB/s
128/256GB 1200 MB/s
521GB 1400 MB/s

Lexar. I can't find a datasheet for them... only 64GB — 512GB Up to 1750MB/s read, up to 1000MB/s write.
If Lexar 128/256GB cards are okay for the 1DXiii (assumed) 1000MB/s then why aren't the Sandisk 128/256GB included?

Sony tough
128/256GB up to 1480MB/s
1593421208341.png
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Here is the Canon EOS R5 and Canon EOS R6, along with the announcement date

Yes, in comparison to the 6D it was yes, but was it a good value at the time? Not really, no. I'm not saying it's a bad camera - it's a very good camera but I don't think the features justified the price.
I would say otherwise but then again I have always rated ergonomics, reliability and access to the best range of native lenses above the cool but ultimately unnecessary features like IBIS, and extra half stop of the mythological DR. And resolution has to do with the way the camera is used. Not its price
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Sigma 24-70mm F2.8 DG OS

Interesting. That is one of the more positive reviews of the Sigma that I've come across. I've been considering selling a couple of lenses to fund a 24-70 f/2.8 of some sort as my photography needs/wants are changing a little, but I'm struggling to get that enthusiastic about any of them once you factor in price.

One criticism of both the Sigma and Tamron options that I've read is that they don't do well tracking moving subjects. That points me to the Canon 24-70 f/2.8L II, as AF performance is more important to me than IS (although I've really appreciated the IS on my 24-70 f/4L IS when travelling, not to mention it's relatively light weight) ... but the Canon is still A$2600 and more where I am, which I find hard to swallow for 2.8 lens covering that focal range. Decisions.
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Side by side comparison of the Canon EOS R5, Canon EOS R and Canon EOS RP

We already have a photograph of it alongside the R5, EOS R, and Rp. You can see its narrower than the R5 but still a fairly large camera. I'd guess about the same as the 6D. It might be slightly larger than the R, but that is hard to eyeball. The R is a nice size.
Thats right. I remember now. It did look close to the R5. A pretty good size. It really is looking like my next camera as the R5 will just be too expensive
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This is likely Canon’s lens roadmap for 2020

Thanks to these factors, the very sharpest lenses made today (Canon RF 50/1.2, Otus 50/1.4, Leica APO-Summicron 50/2) simply couldn't have been made a decade or two ago. The RF 50/1.2 is about 10x sharper than the EF 50/1.2 it replaces. You can see it's 30 lp/mm lines are higher than the old lens' 10 lp/mm lines; >3x sharper linearly is >9x sharper by area. If they could have done that 10 years ago they would have!

On the other hand, you seem to forget that you said no one could make a lens like the RF 50/1.2 a decade ago and then criticize a lens designed more than a decade ago for not meeting a standard you just claimed couldn't be matched at that time.
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