sunnyVan said:

dcm said:

bainsybike said:

dcm said:

...

That's a bit harder for people like me with Presbyopia. My visual near-point is beyond arms length ;-) Progressive lenses correct it somewhat, but not quite that close. The Canon EVF with diopter adjustment works great in my case.

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In your case, of course, I'm happy for you to use a viewfinder.

Actually I prefer a viewfinder myself, and before I bought the M all my cameras had one. But now that I have the M I find using the screen much less of a handicap than I expected. I think it's largely a matter of practice.

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I made the transition from viewfinder to screen with I moved from a G series to S series. The M was an improvement over the S series for me, even if not as pocketable.

I've been using the flip screen on the M3 at 90 degrees to shoot waste level and like this setup. Just wish I could change the BBF button to Mfn. Think I might like that with the EVF as well. Actually makes some sense to have the focus button next to the shutter button.

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You can program the exposure lock button to become focus lock button. Focus with thumb and shoot with index finger.

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That's the way I currently use it. I find the exposure lock button placement a bit awkward to hit/find sometimes, like when shooting waste level or with EVF.

one of mine did this out of the blue at a shoot yesterday

AlanF said:

mb66energy said:

[...]

With a 5D classic I see losses of detail from f/8 on while doing macro shots at 1:3 (I think it
is actually comparable to f/11). From that I extrapolate that the 5Ds can be used at a
max aperture of f/5.6 to use the lenses capabilities in similar situations. The lens used was
the near ideal EF 2.8 100mm Macro (non-L).
To use the full potential of the 5Ds you need stacking at least for macro but I think it will
be necessary for landscape and architecture as well.

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Is that a valid extrapolation? Go to the slrgear site where they measure IQ at different apertures for both full frame and crop. For all the good lenses, there is minimal diffraction degradation at f/8, a tiny amount at f/11, and then more significant at f/16. It is exactly the same for FF and the 7D with 5Ds size pixels.

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I think it is a valid extrapolation. Look at the plot of the resolution @ photozone
http://www.photozone.de/canon_eos_ff/508-zeiss100f2eosff?start=1
http://www.photozone.de/canon_eos_ff/847-canon35f2isff?start=1
http://www.photozone.de/canon_eos_ff/430-canon_135_2_5d?start=1
and
http://www.photozone.de/canon_eos_ff/489-canon_100_28_5d?start=1
The sharpness loss with higher f-numbers is less dramatic if you take the suppressed zero into account.

or compare the 2.8 100 L macro @ f/4 and f/16 with the 7D ii (you are right to use that camera as a good extrapolation basis for 5Ds):
http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=674&Camera=963&Sample=0&FLI=0&API=2&LensComp=674&CameraComp=963&SampleComp=0&FLIComp=0&APIComp=6

Less pronounced with the 1Ds iii:
http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=674&Camera=453&Sample=0&FLI=0&API=2&LensComp=674&CameraComp=453&SampleComp=0&FLIComp=0&APIComp=6


With very good lenses you can spot the decrease of center sharpness from f/4 on on a 20 MPix sensor consistently (in the graphs of photozone). The corner quality increases usually while closing one or two f-stops due to the minimization of lens errors.
With better sensors you will get more detailed images but if you stop down to f/16 you will loose a lot of this gain and I think it will start with f/5.6 or f/8 if "detailedness" is a strong concern.

And never underestimate the sensitivity of our eye-brain system which detects a 5% or 10% loss in detail easily - I do it very often too

But I am open to update my understanding while the new data is coming in!

We have just yesterday finished editing & posting our 2014 portfolio; & there are a total of 359 photos from Kgalagadi & Etosha.

We leave tomorrow for our next trek for 3 months in Kruger, Etosha, & Kgalagadi. Roof top tent was repaired & LC 4x4 & fridge serviced so should be able to pick them up, shop & then slowly & carefully drive.

Thanks for all the kind comments that I had not yet replied to. Till August & I hope a few good post summer rains photographs from our trip.

If this is a dental issue you deal with, message me and I'll try to help you.

Not sure this is quite sport, but at least gentle exercise when they are being used!

Punting in Oxford by RCARCARCA, on Flickr

Thanks for looking

Richard

Thanks, and isn't that what the Internet is all about?

distant.star said:

Well, I hope that made you feel better.

Marsu42 said:

Answer ... if someone trolls himself, i.e. boldly argues that everybody not having his opinion lacks physics knowledge, it is perfectly alright not to address such a weird post directly - esp. if the poster obviously lacks said knowledge himself, stating that you don't need high dr on iso 100 because there's plenty of light (sic).

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FW to retract the focus group on power-down would be handy

It would be handy if there were a firmware feature in the Canon bodies that allowed an option so that when the camera was switched off, lenses that are focussed by wire (the 85L, the 40mm 2.8 etc) would be automatically focussed back to their retracted state.

It would be akin to the option to have the sensor perform it's self-cleaning process when power switch is turned to off.

Not a big deal, but would be a thoughtful little feature to have.


d.

The sensor is Canon with 1.6 crop factor. I believe its the same used in the 750D760D.

The crop factor is determined by the image sensor size. The M, M3 and other Canon APS products use a sensor size of 22.3mm x 14.9mm. Nikon DX and Sony use a slightly larger sensor around 23.5mm x 15.6mm.

ahsanford said:

Follow-up question: Who the hell is renting a Rebel?!

- A

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It does not matter. There are plenty of people buying rebels. I seriously doubt that Canon is only shipping flawed sensors to camera rental businesses.

RGF said:

The old 90 got to 1/2 life size.

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The 90mm TS-E goes 1/3 not 1/2, so it cannot be really considered as a true macro lens. It goes x0.43 with the EF12 tube and x0.6 with the EF25 tube. However I end up using it more than the my 100L for close-up.

Problem with tilt on TS-E lenses, it's a front tilt only. Front tilt brings you quickly out of the image circle, rear tilt changes the perspective a bit, but allows tilting with a smaller image circle.

Someone mentioned the Contax tilt/shift bellows, Nikon did that too with the PB-4 bellows back in the 70s/80s.

Personally I would have preferred a replacement of the 45mm TS-E first, but I am nevertheless curious to see what Canon will bring.

The site doesn't appear to go back to late 1967 when I got my first Canon SLR, an FT QL with the 50mm 1.8.
I was 13 (or just about).

neuroanatomist said:

dilbert said:

Sony's trend is up, Canon's trend is down.

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True. Canon's downward trend means they posted only a ¥48B income. Sony's upward trend means they posted only a ¥128B loss. Wow, that's sure good news for Sony and bad news for Canon. I highly recommend you invest all your liquid assets in Sony stock, based on that incredible upward trend you mention.

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neuroanatomist said:

Sounds a lot like the sapphire (synthetic aluminum oxide crystal) lens on my iPhone. There's a filter company ( in Korea?) that is launching UV and CPL filters made from it, too.

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This is true, but sapphire is significantly harder (Mohs rating of 9 vs 7.5 to 8 for Spinel), so it's unlikely they will ever grind it down into an aspherical lens shape (flat screens covers and filters are much easier to make). Also, Spinel is slightly more transmissive optically (splitting hairs, but whatever).

On the flip side, sapphire has significantly higher fracture toughness than Spinel (up to 4 MPa m^(1/2) vs about 1.5 MPa m^(1/2) http://www.ceramics.nist.gov/srd/summary/ftgsaph.htm, and http://www.ceramics.nist.gov/srd/summary/ftgmgal.htm), but both are much harder than glass that is about 0.8 MPa m^(1/2).

In any case, I'd welcome either material if Canon found a way to manufacture lenses out of them, but I'm more hopeful for Spinel because there are already optical products made out of it: http://www.surmet.com/technology/spinel/

YuengLinger said:

Also, expecting FF quality (OP is comparing to a 5DIII), may still be high expectations in 2015. After all, 7DII costs half of 5DIII release price--and includes new features.

Very keen to se new firmware.

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Dont ever believe this. At all.

Man, i wish you guys can see what i get out of my old t2i and 70-200. Even my new wonderful 5d3 is only marginally better at iso100. And it took me aout 6 months of fiddling and repair send to get my 6d to act proper.

From my tests, 70d has impressive iq- IF the damn focus works. Mine was so busted that i almost gave the canon rep the yell of thier life. 4 days, no images in focus. but i kept cool and sent it back. That same body wa the one that was listed on CR as a refurb deal. I feel bad for whomever bought it.

Anyways, look what nikon is doing with even thier low end bodies. 3300 and 7200 iq and Dr runs circles around canon (non 5d/6d/1dx) offerings. I wont go out and trade my canon gear, but my head is also not in the sand.

So in a nutshell, making excuses for manufacturers is a fools game.

Detail and sharpness is always a combination of lens + sensor. Since I would purchase this body as a dedicated macro body for high magnifications (2 - 50x) only, I test with the optics that will be used with this sensor.

At higher magnifications, diffraction becomes more an issue and often the limited factor in sharpness. Therefore, a studio setup with some fancy stuff (e.g. pencils and colored fabrics) with a 50 mm at f/8 does not say anything about what will happen when you compare with a 10x microscope objective instead.

These promotions include (i.a.):

body and lens CashBack for:
- EOS 750D/760D
- EOS M3
- EOS 7D Mark II

holidaycheck promotion

extendended warranty (3 years) for printers and projector lamps


Almost too much to chose

Canon Germany has started the annual Summer CashBack promotion.
From Mai 1st until July 31st 2015.
Deatails see here:
http://www.canon.de/summer-cashback-2015/

Note for AvTvM :
EF 24-70/2.8 L II: not included
EF 16-35/4 L IS: included, 100,- € Cashback

TAF said:

Hjalmarg1 said:

sanj said:

I just realized that my daughter is avoiding me coming to her graduation day after. She was telling her mother "He will bring his big camera and everyone will look at me." Ouch.

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Plan A: Tell her that this is one of the most important moments in your life and you want to capture with your best gear. Plan B: Bring a less conspicuous camera and behave like a street photographer and Plan C: hire a pro-photographer and enjoy the ceremony.

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Plan C+ (D?): Bring your best gear, shoot the whole ceremony, then sell the photos and give her the proceeds.

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Brilliant. I wish you would have told earlier.....

jrista said:

Absolutely. With a lens like that, you will want to get a midrange mount with the right capacity, and you will want to mount the lens properly on the right kind of dovetail with the right kind of mounting equipment. I am actually working on some articles for my site that will cover exactly how, so keep an eye at the following for more information:


http://jonrista.com/the-astrophotographers-guide/

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Book marked!

give them too friday if not saturday
if no new firmware then it was BOGUS story or canon said that too an annoying costumer who send there 7d2 in but still had problem bka (a shut them up comment)

old-pr-pix said:

Internet Protocol -- think web-cam

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Thanks

Sold!
I hope the new owner realizes that it looks like a rocket launcher, and that he ought to introduce it to local officials before going on a shoot.

Thanks

martti said:

@Eldar: Does your RX100 III start to make a noise like a electric razor until you take the battery out and let it calm down a bit? Mine did that every once in a while. I do not know what was the problem. Like the focusing motor trying to complete an impossible task.

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No, can't say I have noticed that.