December 22, 2014, 05:53:23 PM

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Messages - PavelR

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1
Abstract / Re: Beautiful bokeh! Let me see yours!
« on: December 20, 2014, 12:10:27 PM »
300mm, 1/100s, f 3.5

2
Photography Technique / Re: DOF, Infinity focus and Hyperfocal distance
« on: December 07, 2014, 05:55:42 AM »
I know only the one page describing  DOF deeply: http://toothwalker.org/optics/dof.html

3
Third Party Manufacturers / Re: Opinions on Sigma 85/1.4?
« on: December 05, 2014, 08:36:58 AM »
I've owned C 85/1.8 - terrible purple fringing and AF not as consistent as I'm used to in current lenses. I have C 85/1.2 II and S 85/1.4 now, because S 85 sometimes locks 1DsIII up. Image quality and AF speed is much better with S 85.

4
Reviews / Re: Pentax 645z Review
« on: August 01, 2014, 07:20:14 AM »
http://www.photographyblog.com/reviews/pentax_645z_review/
=>
The only downside is that all of the points are clustered near the center of the frame, as the system was originally designed for APS-C.
:-(

5
Reviews / Re: Pentax 645z Review
« on: July 31, 2014, 02:30:34 AM »
Speed    Auto:1/4000 - 30 sec, Manual:1/4000 - 30 sec (1/3 EV steps or 1/2 EV steps), bulb
X-Synchronization    1/125 sec.
Exposure Compensation    -2.0 to + 1.0 EV

It can not be used as easy as DSLR and as creative as other MF cameras.
(Price [+ price of lenses] of course makes me not to buy it.)

7
Portrait / Re: 'Straight' Portrait of a Young Woman
« on: October 22, 2013, 06:22:03 AM »
hm... looks over-exposed to me and skin texture is just gone
+1

8
Lenses / Re: 85mm prime recommendation
« on: October 03, 2013, 10:56:08 AM »
I replaced 85/1.8 with S 85/1.4 - better iq and AF accuracy on 1D4.
But now I have 85/1.2 too because Sigma does not work well mounted on 1ds3 with new firmware - the camera stopped responding several times...
Purple fringing around the contrasty & light parts [black foreground against white background is not problem] is pretty bad on both Canon 85 (wide open and near wide open). L is also pretty slow AF, but acceptable on 1 series body...

9
Third Party Manufacturers / Re: Experiences Switching From Nikon
« on: September 25, 2013, 04:34:31 PM »
I switched about two years ago from Nikon d2x/d200 to Canon 1d4/1ds3.
Reasons:
* no new professional crop body and no more than 12mpx
* no 300/4 with VR
* no fast AF of 135, 80-400
* no 400/5.6
* no good 17-55/2.8 VR
* FL about 138mm on 70-200/2.8 II on MFD
* not many local second hand offers
A lot of things changed - 70-200/4, 14-24, 24/1.4, 35/1.4, ...
I'm still not used to Canon camera handling - I'm missing lot of controls, information in the viewfinder and LCD [selected mode, selected AF point, numeric exposure compensation, card free space] + 5th. battery on a flash, consistent flash exposure.
Canon lenses except 50/1.4, 85/1.8 and 14-24 are on par with Nikkors; second hand offers are much wider and prices are better...
It looks like I stay on Canon world for some time...

10
EOS Bodies - For Stills / Re: ETTR or ETTL?
« on: September 02, 2013, 01:06:01 PM »
I do not overexpose because, recovered color is not natural - especially in the skin tones or on light (especially red) dresses.
Thus I sacrifice some dark shadows to get correct colors and the texture in the highlights.

11
Lenses / Re: Should I replace my zooms with primes?
« on: August 01, 2013, 08:19:47 AM »
I recommend to add: 135/2 or 100/2 and 24-70 II and 70-200 II to maximize the IQ improvement (in the given order).
Cars does have pretty contrasty (glossy to dark) shapes where old zooms and wide primes need to be pretty stopped down to deliver not blurred images across the frame...

12
Lenses / Re: EF 200mm f2 , how much do you use it and for what?
« on: July 07, 2013, 06:53:14 PM »
I've got both....i use the 70-200 more, but the 200 2.0 makes the money shots  ;)

It is so much better in everything. The bokeh is a tream come true. It's even better than the 85 1.2 and the 135 2.0.
+1
(I own also 70-200/2, 135/2, 85/1.4, but 200/2 is the only lens I go with, if I would like to go light ;-) )
(300/2.8 IS version I. sold -> at F 3.5-4 IQ comparable to 200/2 at F 2-2.8)

13
Lenses / Re: What exactly is a 100% crop?
« on: April 28, 2013, 07:29:18 AM »
drmikeinpdx

100% crop is like said here a few ways...
clip out a part of the full-sized shot...and dont resize it..

I use Faststone (a FREE photo utility you SHOULD have) for this stuff.. works great ...and on a series of photos keeps the same size you choose... for each consecutive pic...
in the 'Crop Board'  use 'lossless crop to file' 
you can set the size of the crop sample.....
the word sample is a hint....
... it automatically appends   _cr    to your native shot

so here is a recent Smith River Panorama ...with a 300x200 100% crop

hope that helps

TOM

I use Faststone to look over my RAW CF card sometimes... it CAN convert directly to jpg .. in a pinch...
it is VERY useful.....
+1

14
Lenses / Re: Which Lens Canon 85mm 1.8 or 135 L
« on: April 12, 2013, 05:39:01 PM »
Forgot to mention I shoot with a 6D.

I've shot with the Sigma and wasn't that impressed, but then again I was comparing it to the Canon. I don't want to pay that high of a price if similar image quality can be had with the Canon 1.8 at half the cost.

I have opposite personal experience with C85/1.8 and S85/1.4: Sigma = better IQ and AF.
(I switched from Nikon world to Canon and Nikkors 85/1.8 and 50/1.4 are far better, so I look for some adequate lenses and high price of Canon Ls and slow AF make me buy Sigma 85. I'm still looking for good 50 with AF...)

15
Reviews / Re: Review - Canon EF 8-15 f/4L Fisheye
« on: March 21, 2013, 08:02:10 PM »
Hi there, can I see samples with this lens with 1D IV
I can not imagine pictures on crop 1,3
or at leat explanation how it looks like.
thank you ...
OH
1.3x does not change the result significantly:

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