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Messages - PhotoCat

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31
Lenses / Re: Canon EF 40mm f/2.8 Pancake
« on: June 29, 2012, 10:38:57 PM »
just got my 40 2.8 with high expectation with color according to other reviews. Sadly the color and shadow detail is almost identical to my 50/1.8, compared with no filter on. I am keeping 50/1.8 & returning the 40 2.8.
Canon really needs to upgrade 50/1.4 due to motor stuck problem...

32
Lenses / Re: Most requested lenses for replacement?
« on: June 08, 2012, 09:09:59 AM »
50/1.4

-not vy sharp under f2.0
-AF motor gets stuck easily
-no real USM

Keep the bokeh and no IS!

Actually canon doesn't have a decent 50mm at a reasonable price range!

50/1.8 - color not good, not usm, plastic construction etc
50/2.5 macro - slow to focus, not usm, not f1.8 or below, vignette
50/1.2 - price, weight

Canon really needs to update this "standard" lens ;)


33
Lens microadjustments only need to be performed in rare cases. Usually the camera and lens fit within a tolerance of each other and those microadjustments aren't necessary.


I'm not going to bother reading all the pages in between here and now, I'll just say that every single lens I use on my 5D2 needs AFMA.

Every single one.

If you buy an F1.2-F1.8 lens and it works perfectly out of the box with your camera, you got lucky.



I was really curious to know if the Nikon guys need this AFMA. We r so used to it in the
Canon camp that whenever we purchase a new lens, we need to get a bandage for it as well LOL!

So I found the following link. It seems that the Nikon guys don't need this AFMA as much as we do...
Well, u tell me why...

http://www.fredmiranda.com/forum/topic/937053

I think one should eventually be able to design a camera/lens AF system that doesn't require AFMA.
AFMA feels like a bandage solution to me...  and it seems to rely on absolute tolerance of components too much...

34
EOS Bodies / Re: Canon, STOP shipping defective products!!!
« on: April 24, 2012, 07:17:11 PM »
has anyone tried the same tests on a D800 BP   ?

Canon has always got away with defects... Remember that 20D & 30D
weren't even able to autofocus sharply with a 50/1.8 at f2.8 at a distance more
than 15 feets...   despite the focus confirm beep!

35
Lighting / Re: Light Meters?
« on: April 13, 2012, 10:10:45 AM »
If you want consistent results in terms of lighting ratios for studio shots, definitely get the L-358.
Moreover, with one click, u can get the % contribution of flash under mixed flash/ambient exposure.
Vy handy for off-camera flash outdoor.

36
Have you ever used this fd mode in the d800 yet? I wonder why since it's such a killer function no review i've read really has mentioned it?


I really hate to advertise for Nikon but here it is:

http://scottkelby.com/2012/cliff-mautner-on-the-nikon-d800/

CTRL-f  for "face"

Read the article and the comments as well & use your own judgment since the word "Review" is not on the article!


37
With equally due respect if you have to rely on face detection in order to shoot portraits accurately then you need to brush up your skills.

I would say that Having face recognition willbe more threat to portrait photographers than anything else. Easy to set up a cheap business or for the likes of Costco etc to pay someone peanuts to just press a button.

No, I don't have to rely on face-det today but to arrive at the correct exposure when using e-ttl bounced flash indoor, some kind of iterative procedure is needed. U test shoot and then adjust and then re-shoot.

Perhaps there is something I am missing. Please enlighten me with a proper technique how I can get a
decent exposure of a bride using e-ttl bounced flash indoor, without needing to do a test shot.

Can't you use spot metering, FEL, and meter-and-recompose ? That's not iterative.

Thanks for the suggestion. I have tried that b4 but spot metering doesn't seem to work with e-ttl.
I think e-ttl only has 2 metering modes: evaluative & centre weighted, at least on my 5d2.
However, if this technique has worked for u, please elaborate on it and I love to learn more. Thanks!

38
In all honesty, I really don't want anyone to invent any digital camera, face detection nor auto-focus, so that our value as a professional photographer is easily seen. Unfortunately that is not the case. Nikon has done it now and we Canon shooters need the playing field leveled. Imagine u r shooting the processional at f2.0-2.8 with bounced flash and hoping that AI-Servo is giving u a few sharp images, while at the same time uncle Bob is just behind u with his D800 with face priority on...  Sure, my lighting will be better than his but if Nikon's face detect technology really delivers, he might nail the focus better than I can with AI-Servo.    sigh...  Here, it is clearly a technology competition.  we can't turn the clock back... if we can't beat them, we might as well join them... sigh...    Eventually as tech advances, it might not be about the camera anymore, it could all be about art, lighting, posing,  composition... and post work perhaps...

39
With equally due respect if you have to rely on face detection in order to shoot portraits accurately then you need to brush up your skills.

I would say that Having face recognition willbe more threat to portrait photographers than anything else. Easy to set up a cheap business or for the likes of Costco etc to pay someone peanuts to just press a button.

No, I don't have to rely on face-det today but to arrive at the correct exposure when using e-ttl bounced flash indoor, some kind of iterative procedure is needed. U test shoot and then adjust and then re-shoot.

Perhaps there is something I am missing. Please enlighten me with a proper technique how I can get a
decent exposure of a bride using e-ttl bounced flash indoor, without needing to do a test shot.

40
Then use spot focus and learn your trade better.  If you have to rely on technology to get the shot I'd never hire you

With all due respect, pls re-read the thread more carefully. 

41
However did I manage the last 50 weddings shooting in manual mode?

I shoot weddings/events in manual mode /w centre focus too. (to be honest, indoor shooting is kind of auto too when I
use bounced flash indoor, since the flash output is in auto e-ttl mode, with some exceptions I was on full manual
at 1/1 flash power)

During outdoor shootings, face-detection is probably not that important as I can use the spot meter.
However, when using e-ttl bounced flash indoor, exposure calculation based only on the face would definitely
be a killer feature for me.


42
Well, Canon has to double hurry up, if Sony can achieve this kind of ISO without backlit technology.
Astro, do u have a reference quoting D800 is not using a backlit sensor? Tks!

it´s EXMOR technology not EXMOR R.
im to bored to search the link.. nikon is not very open about what sony sensor tech they are using. but trust me it´s not backlit.

anyway backlit technology will not yield much better performance on a FF sensor.
the wiring in a FF sensors does not occupie as much space (percentage of the sensor area) as in a P&S camera.
that´s why sony is only using the Exmor R technology in small sensor cameras (beside that a backlit sensor is expensive, especially if it would be FF).

i think sony will have improved the quantum efficiency and that is why the D800 has a good iso performance.

Thanks Astro, this is good info that I was not aware of.

43
Quote
So dramatic. Unlike you i don't feel like i am being killed. I always use single point focus and i know to under expose or over expose based on light, its not that hard. Tech is good of course, thats why i love my 5dm3.

No, it is not that hard and I do that all the time. 1st shot (/w bounced flash) with an estimated expo comp based on experience, look at the histogram and chimp it, adjust the expo comp if necessary,  and than reshoot...   Well, sometimes the chance is missed and u cannot shoot again during a wedding...   :(      Well, I am sure one would say we could Lightroom the exposure back but I prefer to get the correct exposure to minimize the amount of post-work. There is an additional benefit too. I can just use the jpgs directly out of the camera/DPP, which has better color than Lightroom or ACR after raw processing, IMHO.


44
Quote

well EXMOR is not EXMOR R.

the sensor in the D800 is not backlit.

EXMOR:

http://www.sony.net/SonyInfo/technology/technology/theme/cmos_01.html


EXMOR R:

http://www.sony.net/SonyInfo/technology/technology/theme/exmor_r_01.html


I can't believe D800's sensor is not backlit, seeing its high ISO score on DXOmark...
When 36MEG is scaled down to 8x12, or 8MEG, its noise performance is vy close to D3S.

Well, Canon has to double hurry up, if Sony can achieve this kind of ISO without backlit technology.
Astro, do u have a reference quoting D800 is not using a backlit sensor? Tks!


45
Greetings to all! First of all, I am a Canon user and I really want Canon to do well.

Have been reading up on D800 and 5D3's user manuals...
Gosh, Nikon's new face-detect technology inside the viewfinder is awesome!
Not only does the face detection works with
high-speed phase focusing but it also works with exposure calculation based on the face alone!
In addition, it works with i-TTL too!!  This is a paradigm changer for wedding photographers!

Implication is that when capturing any backlit portraits, there is no need for exposure compensation
if u turn on "face priority" in D800 or D4!  This also helps bounced flash portrait photography immensely.
There is no need to "guess" the flash expo compensation and chimp anymore!! U get excellent focus
and decent exposure in the 1st shot!

Canon, do u realize this Nikon feature is going to kill us all Canon portrait photographers!
Please, Canon, I want this in the next Canon DSLR!

As if this is not threatening enough from Nikon, Sony's new Exmor backlit sensor used in D800 is
another game changer. It is not just another "better" tweaked CMOS sensor from a different manufacturer. It is
not a "tweak" of CMOS technology, it is another revolutionary technology by itself.  It is like Nikon is using a gun to fight with Canon's sword. The ISO advantage of Exmor's backlit technology cannot be under-estimated.

Canon, please, hurry up!  Perhaps licensing Sony's sensor technology is a fast stop-gap solution!

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