Warning about EF 24-105mm f/4L IS II USM AF Problem.

Dear friends,

For all of you using or thinking of purchasing the new EF 24-105mm f/4L IS II USM lens, i just found this Service Notice of Canon Philipinnes, warning about an AF problem that affects lenses of specific serial number batches (i guess up-to-date):

http://www.canon.com.ph/news-pressroom#May05A

So, take great care in order to avoid unpleasant surprises.

Wishing you and your beloved, all the best from starry, warm, summery Athens Greece.

Yours
Yiannis.

canon-300mm f1.8, Exotic or what

rs said:
IglooEater said:
Sharlin said:
fentiger said:
I believe NASA are building a 134 meter focal length f20 right now! 8)
Wonder if my 1DX11 will work on it


Yeah, but it's a reflector so the bokeh will be horrible :(
I'd also be guessing that its minimum focus distance might not allow it to have anything on earth in focus...

I guess it can focus down to 1.5 million kilometres:

Orbit: 1.5 million km from Earth orbiting the L2 Point

source: https://jwst.nasa.gov/facts.html
True enough. Forgot it would be in orbit... :-\
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New Tamron 70-200 rocks

bholliman said:
IglooEater said:
This http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=1116&Camera=979&Sample=0&FLI=3&API=0&LensComp=687&CameraComp=979&SampleComp=0&FLIComp=3&APIComp=0 would seem like a more logical comparison, no?
Yes, f/2.8
To my eyes the Canon is a little sharper in the center and the Tammy is a little better in the corners. Canon set the bar high with the II lens 5+ years ago and it appears Tamron has come very close in 2017. The significant focus breathing issues at portrait distances (detailed in Dustin Abbott's review) might be a concern for portrait photographers however.

My eyes say the same as yours.
No doubt the Tamron will be a great option.
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Sigma 135 f1.8 Art; Inconsistent AF

Eldar,
I have completed calibrating my Sigma 135 F1.8 Art. I used Focal target and Focal in automated mode. camera:6D.
I also took my time to verify that caibration was valid for daylight and LED lighting conditions.
calibrated at 0.9m, 1.3m, 2.5m and 12m (infinitiy). Focal reported focus consistency no less than 98.5% through the test. In order to ensure focus consistency I then ran callibration test at each given distance 4 more times and Focal suggested very similar calibration adjustment values fluctuating around the best AFMA values and within -1/+1 AFMA units around the set value.
Lens is impressively sharp with maximum sharpness achieved at around 10m to target (near infinity) and equal to 2145 Focal units. My sharpest lens is Sigma 85 F1.4 Art with 2185 Focal units achieved at approx. 4m to target.
It is a sharp lens, not as sharp as my copy of Sigma 85 F1.4 Art. They both great lenses but produce very different images of course...
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Canon EF 28mm f/2.8 IS USM

Larsskv said:
Sporgon said:
Still no love for this lens on CR ! I bought this one used a couple of years ago when it failed to sell on e bay, and didn't think that much of it at the time. However its qualities have grown on me, and it is actually a very fine lens with exceptionally good "drawing" for such a wide one with aspherical elements when used at full aperture. This makes it a really good 45mm field of view lens on crop. In fact I'm liking it so much now I have bought its bigger brother the 35mm f/2 IS, which is even better, and doesn't suffer fro the chronic field curvature that the 40mm pancake suffers from, especially at infinity and f/5.6. Ever read a review that refers to the 40's bad FC ? There is only one review on the web that I can find that refers to it.

Not sure I'd have paid the original £800 new asking price, but to be fair it does behave like an £800 lens !

Shot on 5DII @ f/2.8, 1/500th ISO 100..

I absolutely agree with you and your love for the 28 f2.8 IS. It's images looks great. I disagree with on one thing though, I don't think the 35 f2 IS is better.

I think the 35 is better on FF but probably just because I find the focal length much more useable. On crop I could agree with you.
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85 1.8 + 200, Tamron 85 1.8 + 200 or Canon 135?

I think I'm following...

Swapping for the mythical 135 f/2 version 2.0, correct? Because you already own the current 135 right? Because Frodo is correct. I love the 135, and while I believe it's CA is much more controlled than the 85 f/1.8 (which I own as well) it is from that era of glass from Canon where it is there. I also agree that the 85 f/1.8 is hard to beat for being smaller/discreet.

I can't speak for the Tamron either, and it seems pretty universally loved (and would be on my list for an 85mm prime upgrade). However I believe it suffers from CA as well.
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Canon EF 400mm f/4 DO IS II USM

Alan, I honestly never used the 300 X2 on the 1DX2, I just put it away in its case. ;) Not sure why but I think it had to do with how busy I've been with you guessed it, my tiling job. >:(

With the 6D, 300 X2 was awful unless you had pre-focused, then it would snap. I did post a fair number of eagle BIF shots last year that were 300 X2 with the 1D4 and it was a little better but not great. I'm guessing Grant is right. I wanted 800 so the 300 got stored. I must say 400 X2 is very snappy but I don't have a good reference to go by.

Now, Alan what's your opinion?

In case anyone is interested here is some commentary from Canon Canada:

Thank you for your E-mail inquiry.

I do not have the numbers for the acquisition time but this is definitely depending of the quantity of light that is hitting the AF sensor and the position of the chosen AF point. .I have attached an image of the AF Sensor of the EOS 1D X Mark II. Imagine that light is hitting this sensor coming as a cone of light with diameter according to the aperture. The smaller the aperture, the smaller the cone and less sensors will get the information about distance. The one in center are expose more to the light and are also more sensitive. This is why the AF is more precise using the central point. This is also explaining the restriction of the AF points available when aperture is getting smaller.


So, to answer to your questions, one by one
1. Is it predictive in anticipating where the bird is likely to be?
Yes, The AI Servo is a predictive algorithm. As any algorithm, it is not perfect. You can read more about the AI SERVO in this guide.
This is the AF Guide for the old 1D X. From the AI Servo point of view it is the same as the one in 1D X Mark II
http://learn.usa.canon.com/resources/articles/2012/1dx_guidebook.shtml

2. Is it possible for you to comment on the AF acquisition speed number number relative to the 1DX2 and perhaps provide some sample shooting situation/s where it is unreasonable to expect AF to keep up?
No. this kind of details are not available. It is unreasonable to expect AF to keep up in low light situations (-1EV, -2 EV) (Dusk / Dawn covered forest )

3. How does my 300 2.8 II compare with my 400 DO 4 II in this regard?
300mm 2.8 will be faster than 400mm DO 4.0 in regard with the speed of the AF. Keep in mind that adding an extender into equation will slow down the AF speed considerably. on both lenses.

4. Also, do you have any idea if Canon log will be added to the 1DX II?
I do not know if will be added and when. It does make sense to have it available in 1D X mark II too


5. My response on last email was based on a post made by a colleague from Canon USA. Here is the original post:
http://www.canonrumors.com/forum/index.php?topic=20182.0


Jack
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Scanning Negatives and Slides, scanner ore macro?

MrFotoFool said:
The reason in my opinion is that cameras are meant to photograph three dimensional objects. When you photograph a flat two dimensional picture of the real three dimensional world, it is never as good. Sadly I cannot give you the technical reasons why.

A camera with a single "eye" really can't see "3D" :D Also a lot of photo work, especially in the past, was made to reproduce flat subjects, thereby it was thoroughly tested :)

Yet, not every lens is good to reproduce flat subjects at close distances (not "flat field" designs), and a good setup and care are required to get the best results - and that's true for scanners as well.

I tried for a while to get decent result with a mid-range Epson flatbed scanner, just to give up because result weren't satisfying.

High-end scanners may use "wet mounting" to obtain better results, and let's not start to talk about the quality of drum scanners vs. CCD scanners...
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The Birth of Greenhouse 4K UltraHD "New Forest Fruit" (5D Magic Lantern RAW)

Interesting.

I noticed most of this was shot time-lapse....but with regard to the actual ML RAW Video shot...how did you find the workflow?

Was it very difficult to get the RAW footage translated, and all and read for an editor?

What did you use to cut the video footage (what editor)?

Did you use something like Davinci Resolve to color correct/grade the RAW footage? Were you able to work at full 4K or did you have to use proxies, etc?

I'd be very interested to hear your workflow process for this....I enjoyed watching it!!

I'm right now myself dabbling into learning hydroponics for growing veggies (tomatoes and lettuce right now), and was interested in seeing the system depicted here.

I'm craving strawberries now....

;)

Thanks,

cayenne
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'Frost' - Short Video taken with Canon 6D & Tamron 45mm

A nice watch!!
I liked the beauty of nature (glad it doesn't get THAT cold down here in New Orleans).

I liked the music you chose.

If I had some criticism, it would be that many of the video parts, IMHO..were a bit too blown out, with the very light areas taking your eye away from the branches with ice you were wanting to have folks focus on.

I noticed at the end, where you "captured" some of the video into still images...you did some correction and made the part you were focusing on, the trees and ice...more contrasty...bolder.

I would like to have seen that type of color grading done on the video throughout..make your subject more punchy and maybe cut back a bit on the super light and at times blown out lights that pull your eye away from the beauty you're filming.

Hope this is taken as constructive...I liked the video...

Keep shooting and posting!!

Cayenne
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"What If" - Valentine's Day Short Film (Canon C100 and Tamron 45mm)

Very nice!!

I liked especially the opening at the beginning, with the early day...brighter colors, showing "beginning" and "hope"....and the closing of the relationship scenes...and night...and clear in focus, that things are closing and ending and it is "clear".

My only criticism that hit me right off, was towards the end, of them talking..there was some jittery camera movement for want of a better term that took me out of the moment a couple of times..camera shake, or re-adjustment that took me out of the moment.

Nice little short, I enjoyed watching it.

Keep shooting!!

Cayenne
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Man at work - CG-artist

Superka said:
Post production studio documentaries. Canon 60D, 18-55/3.5-6.6, Helios-44 58/2

https://www.youtube.com/watch?v=6MBjniTm8vc

Pretty cool!!

What program(s) are you using?
LOL...windows keeps crashing.

Wow, SO many things I wish I had the time to learn, 3D modeling, CGI etc...I'd love to get into.
But I'm still trying to learn Lightroom, PS, FCPX and Davinci Resolve...I'm old, I have a day job and time is limited....

But trying!!

Anyway, enjoyed the video!!

cayenne
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Modest Growth in Camera Sales According to CIPA

Great comment, thx for this.

The numbers for Sony's announcement were not exactly what it seemed either. It's people like you that can cut through the fluff. cheers!


jebrady03 said:
Although your analysis is spot on, it is missing a few key points which seem to have been consolidated into words ("A big boost coming from mirrorless cameras") when fleshing out the numbers could be informative.

All numbers are Jan-Mar, so only 1/4 of the year.

Looking at production...
Worldwide Production of Mirrorless Cameras - Year Over Year (YOY) is up 44.1%
Worldwide Production of DSLR Cameras - YOY is down 4.7%

Looking at shipments...
Worldwide Shipment of Mirrorless Cameras - YOY is up 45%
Worldwide Shipment of DSLR Cameras - YOY is down 8.3%

Breaking down shipments by region...

Shipment of Mirrorless to Japan - YOY is up 36%
Shipment of DSLR to Japan - YOY is down 9.3%
Shipment of Mirrorless to Europe - YOY is up 44.9%
Shipment of DSLR to Europe - YOY is down 15.8%
Shipment of Mirrorless to Americas - YOY is up 78.1%
Shipment of DSLR to Americas - YOY is down 11.7%
Shipment of Mirrorless to Asia - YOY is up 39.1%
Shipment of DSLR to Asia - YOY is down .9%

Again, worldwide shipments of Mirrorless are up 45%. The ONLY region with shipment growth above the worldwide average is the Americas which has increased 78.1%. Diving into those numbers further...

Total interchangeable lens camera shipments to the Americas = 535,114
Total DSLR shipments to the Americas = 409,823 which means DSLR represent 76.6% of the market
Total mirrorless shipments to the Americas = 125,291 which means mirrorless represent 23.4% of the market.

Worldwide, as cited by CR, mirrorless accounts for 36.4% of all shipments however in the US, it's only 23.4% of the market. But again (as I've illustrated above), the MOST growth, YOY, is coming from the Americas which means that, compared with last year, the growth in the "Americas" market for mirrorless is driving mirrorless adoption worldwide - at least compared to the average adoption rate across the planet.

*note - shipments to "other areas" show a larger percent increase YOY for both DSLR and mirrorless, but the volume is so low that it only represents 2% of the entire ILC market.

Interesting numbers!

A prior manager of mine used to say (in regards to looking at performance) that looking at a single piece of data for a short period of time is like looking at a photograph - it's a moment. However, when you look at lots of sequential bits of data and they all point to the same trend, it's like watching a movie. In this case, we're looking at YOY data, which is definitely movie-like. Not only that, the data confirms what's been seen for years now. DSLR production and shipment are still declining while mirrorless is still climbing.

*disclaimer - this is just MY analysis of the numbers. It's not an indictment or condemnation of either camera line. Keep the hysterics to a minimum, please.
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New Canon USA rebates, Including the EOS 5D Mark IV, EOS 77D EOS M5 and More

Might finally be time to pull the trigger on an M5. I just need to decide which bundle, if at all.

I was originally planning on M5+15-45, as it would be the smallest combo, then add the 22/2 and the 11-22. That'll be my tiny take anywhere kit. But now the 18-150 kit is only slightly more, and it's tempting me even though I know I'd probably regret it.
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Review: Canon EOS 77D By TDP

Somehow the 77d feels like a replacement of the 60D, and I dont see the market for that Camera.

For someone who buys his first dslr, the only advantage to the rebel-series camera ist the LCD on top of the grip. And I assume that a lot of people dont want to pay extra money for that feature, if they are looking for an entry level camera.

More advanced Photographers will pick the 80D.
And by the way, the naming-system of Canon is a real mess. It just doesnt make sense.
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