Posts

Michael Clark · May 27, 2019

Stephen Melvin said:
Two things of note to clarify after reading recent posts:

1. IS can be very useful even in fast lenses that don't "need" it. First, it stabilizes the finder, which is always handy. Second, as someone who shoots bleeding-edge handheld available-dark images at ISO 25000 with my 24mm f/1.4 wide open, I will take any help I can get.

2. The myth that IS degrades image quality needs to die. Some of Canon's sharpest lenses have IS. This myth is no doubt related to the myth that adding elements to a lens degrades image quality.

IS is in more and more lenses because it improves image quality by reducing the effects of camera shake.

IS only improves image quality if the amount of blur due to camera movement is greater than the amount of blur introduced by displacement of the IS lens elements from their ideal position. For IS to counteract camera movement, lens elements have to move. That means they are introducing either tilt or centering compensations that are less than ideal.

IBIS also affects IQ, but in a different way. As the sensor shifts it moves the center of the frame away from the center of the imaging circle. This will typically cause the IQ at one edge/corner of the frame to improve (because that edge/corner is now closer to the center of the image circle) while at the same time causing the IQ at the opposite edge/corner to degrade (because that edge/corner is now closer to the edge of the image circle).

uri.raz · May 27, 2019

unfocused said:
My pure speculation on this. I suspect the bulk of APS-C DSLR owners who buy EF lenses are buying telephoto lenses. Heck, Canon even kits some of the Rebels with EF telephotos.

Other then a crappy 75-300mm?

GulliNL · May 27, 2019

I mean they should have done it in the first place, I find it an omission which they could fix.

Mt Spokane Photography · May 27, 2019

archiea said:
Thanks for the reply.

one thing to look out for with the low price in some is that I believe canon sells the grip only WITHOUT the usb charger for the lesser price.

I verified that this was a authorized dealer before I ordered it, and the grip was new and complete, including USB charger. I've been around more than a few years and know all the tricks.

They still have it for that price. I'm not sure why, their other Canon stuff is all sold at MAP.

Canon 3086C002 BG-E22 Battery Grip For EOS R Camera

Buy the Canon 3086C002, BG-E22 Battery Grip for EOS R Camera at Full Compass Systems. 0% Financing and Free Shipping on thousands of items!

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I've transferred images to Adobe Lightroom on my phone and then to the cloud, but I don't transfer them to my NAS when shooting within range of my Wi-Fi access points.

I have very large hands, so my thumb keeps creeping onto the top ocorner of the screen, I've turned the touch bar off because it was always being activated.

Even with its flaws, I tend to use it more than my 5D MK IV because it is easier to carry. I generally don't like grips, but it helps solve a issue, so I had to compromise.

Unfortunately, all the dual Canon chargers I've owned charge sequentially, so that came as no surprise, but it was one of the first things I verified.

jackstevens · May 26, 2019

You did a fantastic job! It makes me happy, knowing that there are so many bright minds out there in the world. You are our future, and so is technology. Education systems should be innovated and upgraded every year. I will do my job and tell all students to buy research paper online at this site as a study material so that they can be ready for a digital future.

Quirkz · May 26, 2019

JPAZ said:
I've got mine set to ECO. I leave the touchscreen closed unless I need it. I turn it off immediately (if I turn off the IS to save battery, I might not remember to turn it on so just turn off the camera) if I now I'll not be taking shots for a bit (probably not necessary since it "times out" on its own) and I do almost no crimping. I've taken over 350 shots with the RF 24-105 and have battery still available.

I do wish the IS would not stay "on" and maybe a future firmware upgrade will improve that.

I have 3 batteries 'cause 1 came with the camera and I had extras from my old M days. I am planning a trip and thinking about the RP instead of my 5Div. I'd bring the RF 24-105, the EF 16-35 and the EF 100-400 vii with the RF-EF adapter. What is anyone's experience with the EF + adapter and battery life? Assuming 200-300 shots a day (and that is likely more than I'd do) and 3 batteries, would I get a couple of days worth of images between charges?

Hmmmmm. 3 battery’s over two days? Probably, if you didn’t chimp too much. Safer to plan on charging each night though. At least it’s quick and easy via usb c

I didn’t use my elf lenses much as the rf24-105 ended up stuck on the camera, but with what little I did, I didn’t see a change in battery life.

jeanluc · May 25, 2019

jeffreybehr said:
I just got tired enough of my Sony a7r3 and ordered an R/24-105/adapter kit from B&H.. (Tried to buy locally but the store with stock doesn't take PayPal.).. For the Sony, I have the 24-105 and 70-200 F4/G zooms and Canon TS-Es in 24mm (gen.2) and 50mm (gen.3).. Will be keeping the TS-Es and the RF 24-105.. Won't be buying a tele for a while.

The R felt VERY good in my hands...MUCH better than the too-small Sony.

That’s why I got an R...if you just hold the R, Z6/7 and A7R, that’s the exact order of how ergonomically well designed they are IMO...the R just feels a lot better in the hand.

dgbarar · May 24, 2019

Thank you for the lens information PCA. Again, nicely done video.

Don

Kit. · May 24, 2019

Sator said:
Funny, we never used to call 35mm format, "full frame" in the film era.

That's probably because EOS IX and similar cameras were a market failure.

There also were 135 format film "half-frame" cameras, but too far ago for most of us to remember.

old-pr-pix · May 23, 2019

Mt Spokane Photography said:
Sports used to be done with 4 X 5 press cameras, photography was a high skill. Automating things to bring those skills into the hands of ordinary photographers has driven the camera market. Autofocus, interchangable lenses, built-in light meters, rear lcd's, TTL viewfinders, its all about making the once difficult easier to do.

Absolutely. And then folks wonder why less and less value is placed on individual photographs when the skill required to produce them is diminished. Anyone can push the shutter button now and almost all the technical aspects are automated to produce a reasonable image. Next the advent of deeper AI will not only track focus but will suggest composition. While great photographers will continue to evolve and push the edges, it is the 'just average' photographers who will continue to be displaced IMHO.

clippingsolutions · May 22, 2019

All the photos are gorgeous. Glad to be here.

May 21, 2019

lawny13 said:
No, I am not relying on different physics. But as I was implying and as you pointed out refraction when it comes to optics like elements can contribute to what you see. I know what the definition of CA is. What is the exact physics behind it? Is it not different wave lens reaching different portions of the lens, especially when the light is bend aggressively and not compensated accordingly? So I when I say that generally I wouldn’t put optical elements in the frame to judge CA such. As gems or glass or ice etc it is to eliminate a potential contribution to the result. After all if one holds a gem up to the life and twist it this way and that one can general manipulate it to see a verity of colors. That includes purple and green those it not? So gems do bend light and can be a cause of a higher than “usual” incident light into the lens, which one can’t attribute.

Yes, the physics is the same, but you're relying on physics at a vastly different scale. Refraction from lens elements results in separation of wavelengths on a µm-scale, refraction from an object in the field of view is not the same. From the standpoint of a subject LoCA results from reflection, not refraction. Consider: why is it that LoCA – no matter the source – shows up as purple and green? To (re)quote you (with typos corrected): "After all if one holds a gem up to the ~~life~~ light and twists it this way and that one can [in] general manipulate it to see a ~~verity~~ variety of colors." That's obviously true, so why does the LoCA observed in jewelry pictures* not show a variety of colors, but rather only two? Because the LoCA is not resulting from refraction through the subject, but only through the lens elements.

*There's a caveat there, that the gems need to be clear. If the gem is colored, the light from it will not be white and the way in which that light is refracted by the lens elements will be affected. But that's not the case here, as the jewelry under discussion contains only clear gems.

lawny13 said:
Of course if this was shown for those interested in taking pictures of jewelery specifically I get it can be useful. But as a blunt example of CA control... eh, grain of salt.

So if one is interested in sharpness, ISO 12233 charts are only useful for those interested in taking pictures of flat, printed subjects?

Regardless, look at the jewelry LoCA image, and notice that there are purple/green-fringed gems and that the setting is also purple/green-fringed, and that the intensity of the fringing is equivalent between the two. So let me ask you again, as an applied physicist – does solid metal refract light? If it does, then it's possible you're correct. But of course, we both know it doesn't.

As I stated previously, the 'extreme case' of LoCA is a specular highlight, and it really doesn't matter if that highlight is from a gem, polished metal, or another highly reflective surface.

Here's an example from a review of the RF 50/1.2. There is LoCA on the ring, no gems required.

Having said that, I do agree that the LoCA on the RF 50/1.2 is very well controlled.

Cryhavoc · May 21, 2019

Old thread, but for pc users, this works great.
I picked up a pristine 1D MK IV and found that its shutter count is only 19,460.

btw, you will need to download winrar to unpack the file.

bergstrom · May 21, 2019

no worries, thanks Graham.

Michael Clark · May 21, 2019

Architect1776 said:
I would suspect that this is Canon looking at future Sony a9 etc. and wanting to assure canon users that there is a real pro camera being tested right now. If too tight lipped for too long too many will jump ship and then it is hard to get them back. Just ask Nikon that is still struggling after Canon crushed them with the EF system. Nikon assumed that their pros would stick with them yet they were abandoned in droves until their pro market was left to rich amateurs rather than the pros along the sidelines and at major events.
It sounds like canon is trying to get ahead of that mass exodus.

The pros, in the kind of numbers that matter to Nikon and Canon, have already left the building. Not to go to Sony or Panasonic, but to a career where they can still make a living. The premium camera market today is not being driven by pros any more, it is being driven by enthusiasts and hobbyists with lots of money to spend. This sea change has been coming for a while, but seems to have reached critical mass around the time the 1D X Mark II and D5 were released.

Ozarker · May 20, 2019

Mikehit said:
Concidentally, I was wondering the same thing only last week: I tweaked the clarity and thought 'Whoa! That's garish. What's happened?" I was not sure if the tool had changed because it was always touted as something that tweaks midtones to improve apparent sharpness, then I wondered if it depends on the starting image in that to get a difference on an image that has good lighting, and good small-detail contrast you need to use it more heavily. But I could not escpe the feeling it was not what it used to do.
Then as soon as I used the texture it immediately felt to me that it was what Clarity used to be like. But maybe there is some auto-suggestion coming in. Whatever is happening, I really like the effect of the texture slider.

I like the texture slider too.

Ozarker · May 20, 2019

Click said:
Lovely girl. Beautiful portrait. Well done, Canon FanBoy.

Thank you Click.

blaydese · May 20, 2019

By the way, Photomatix Pro 6.1 is so nice and smooth and has come a long way since 4.1 days.

https://www.hdrsoft.com/

Peace! 8)

RayValdez360 · May 19, 2019

wtlloyd said:
Work all the weekends you want, you're still paying $500 just for bragging rights. Plenty of top line flashes that do the same thing for half the cost. So, one flash plus a backup, or a very nice label.
[/QUOTE
outside of godox v1. its a good flash. i recently finally lookedat all the pros vs. a regular speedlight. it simply works a lot better. peopel that do weddings or events that require lots of flashes would understand this better than anyone else. i dont have it but i am tired of my 600 ex batteries running low, slow recycle, no fires, and hard time getting gels on and off. then i sometimes use a profoto strobe to light a room. i have to put it in slave to get it to work

bhf3737 · May 19, 2019

EF 11-22 f/4 works well with EOS R for 4K video. The 11mm wide end cropped is still wider than what I like for video but the 22mm zoom end is close to to 37mm FOV and anything in between is usable. An advantage is that the var ND mount adapter can be used for compensating the shutter speed. This couldn't be done on other cameras, such as 5D IV.

Sleeplessin · May 19, 2019

Thanks caMARYnon and JuanMa

If you like it don’t forget to subscribe to my YouTube channel

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Ozarker · May 19, 2019

bokehmon22 said:
I said if I was a wild life photographer (I am not), I would prefer eyeAF.

Don't quote me out of context. I don't care what you use or want. You add nothing constructive to your post. Just use whatever make you happy. It just a tool. I'm not a fanboy of any brand.

Stop quoting me and respond with useless with info.

Some people have no sense of humor.

SecureGSM · May 18, 2019

it comes with a substantial focus shift as a bundle. please note

Mark3794 · May 18, 2019

Normalnorm said:
I am referring to the speed booster performance. The Canon's adapter for the M series should work perfectly as they make it. The third party speed boosters are the unknown quantity.

Sorry my bad i meant that i already have the speedbooster