sotirius

sotirius

Lives in Australia Melbourne, Australia
Joined on Feb 2, 2011

Comments

Total: 11, showing: 1 – 11
On Focus Stacking in Macro Photography article (128 comments in total)

By changing the focal length you also change the magnification. The proper way to do this is by keeping the lens at max magnification and using a slider to move the whole camera. If not done like this you will distort the actual dimensions of the object you are taking images of. You need something like this http://www.youtube.com/watch?v=wwyBzPdeq2s

Direct link | Posted on Apr 12, 2013 at 06:50 UTC as 54th comment | 5 replies
In reply to:

peevee1: Reading their article, I did not find the mention at what aperture do they measure the sharpness? But let's assume it is the best a given lens can do at any aperture (ignoring DoF and light requirements). But what about zoom - at what focal length this is measured?

Otherwise the scores themselves are useful just to confirm the stupidity of sensor megapixel wars of last many years, with most lenses giving only 4-6 P-Mpix of optical resolution at best.

How is it then that MF lenses are so much better?

Direct link | Posted on Dec 20, 2012 at 01:59 UTC
In reply to:

HSway: This is a great lens. Very good indeed. Nikon and Canon (ll) versions are better for landscape. If there are other considerations, this Tamron with very effective VC is the second best option.
Hynek

I had two copies of this lens but decided not to keep them. Mine were the Canon version. Tamron has bad quality control on their products, they are like cheap Chinese manufactured products. You never know what you get. Both copies suffered badly from decentred elements, resulting in smudged corners. I have came across many people over the internet that have the same problem with this lens. The good points about it are: 1.Very sharp in the centre 2.Has low CA 3.Has VR(which degrades IQ that's why the Canon ver2 doesn't have it) but is useful for videographers. The bad points of this lens are 1. vignetting even at f/8(you can get rid of it in PP but why bother it shouldn't produce so much vignette) 2.Slow AF-compares to canon 18-55 IS. 3.Massive barrel distortion. 4.Due to field curvatures and bad centering it produces unacceptable images. Say goodbye to landscape and group shots. 5. Over priced. The real price should be no more than 700$. This is my personal experience, not forum based

Direct link | Posted on Nov 19, 2012 at 09:04 UTC
In reply to:

stelioskritikakis: Canon lost the sensor round completely.

some super-filtered jpegs can't stand a chance in RAW samples..
Assuming that 650D will offer nothing more than the 600D in RAW
Same thing as 5D mark3 offered nothing better than 5D mark2 in RAW.
Very similar IQ.. i'd say identical.

Its impossible to catch up with the new nikons d800 and d3200 that play in a different league. Plus the stupid delays in stock...

i'm one step in changing equipment.. only problem? i love my L glass :(

i'm selling all my canon gear lenses + 5dm2 and will go with the d600 or d800. Maybe even pentax if they release a FF.

Direct link | Posted on Jun 9, 2012 at 09:26 UTC
On Just Posted: Canon EOS 5D Mark III review article (706 comments in total)

HASSELBLAD cameras have only ONE! (1) autofocus point, does this make them bad cameras? Stop complaing about stupid gimicks, and start shooting(filming). In the end all cameras are the same...

Direct link | Posted on May 23, 2012 at 01:53 UTC as 222nd comment
On Just Posted: Nikon D3200 preview samples gallery article (497 comments in total)
In reply to:

OneThird: Nice pics! After owning a D3100 awhile back before I sold mine, the low light images are much improved, thanks to Expeed3 and the new 24MP sensor (from Sony of course).

Now, if Nikon can include these features, it would be a sweeter deal, IMHO.

-more than one custom white balance.
-Kelvin temperature scale.
-shoot with flash while dragging the shutter.
-Off, Low, or High NR at ISO 800 and above.

This is a Nikon developed sensor. Not Sony's!

Direct link | Posted on Apr 25, 2012 at 05:05 UTC
On Canon EOS 5D Mark III studio samples published article (287 comments in total)
In reply to:

l i j: I have done Some ISO(upto 102400) Test and HDR test.
The samples are available.
ISO Test
http://www.ishootmoments.com/blog/?p=21
HDR Test
http://www.ishootmoments.com/blog/?p=16

the HDR images are sooo crappy...

Direct link | Posted on Mar 29, 2012 at 03:16 UTC
On Olympus OM-D E-M5 low light high ISO sample series article (283 comments in total)

My Canon's 450d/XSi performance at ISO 400 is the same as this camera's ISO 6400....

Direct link | Posted on Mar 10, 2012 at 03:47 UTC as 48th comment | 2 replies
On Just Posted: Canon G1 X studio test samples article (220 comments in total)
In reply to:

Sdaniella: i'm here to only share relevant info for shooters like myself who happen to be already dSLR owners, be it FF, or APS-H, or APS-C, who have held off for quite along time with great reservations on a suitable 'prosumer' compact to complement the dSLR, and that it must have a level of IQ and sufficient focal length choices for daily walk-around 24/7 carry around digicam, and not 'another' full ILC system, which do not perform anywhere near what can already be had with our FF/APS-H/APS-C dSLRs.

or even PowerShot G shooters looking for an update 'G' but with vastly improved IQ of a dSLR.

i do it with keen interest on how the G1X compares to what we already own, so that upon scrutiny, the IQ would not be at a level that we'd be ashamed of being handicapped with, that many smaller systems face, or 'in between' or current mirrorless systems. and YES, good performance in LOW light at HIGH ISO's do matter, as we have already taken it for granted with our current larger sensored dSLRs.

1. you're on drugs, 2.you're using a humor i do not understand.
seriously lady, none of your comments make sense! not even 1%

Direct link | Posted on Feb 16, 2012 at 14:39 UTC
On Just posted: Our Sony NEX-7 in-depth review article (339 comments in total)
In reply to:

Digicam Newbie: Great review... Thanks.

However; six of your last seven detailed reviews have been Sonys. Will you continue reviewing other brands? Would love to see more balance.

Thank you.

He meant 1d X which was released this year

Direct link | Posted on Dec 14, 2011 at 07:15 UTC
On Fujifilm releases X-S1 premium EXR 26X superzoom article (383 comments in total)
In reply to:

Maxfield_photo: Wow 26x zoom, at the long end that must be what, f/90? The diffraction must be monstrous.

Do you ever read or you just comment? f/2.8-5.6 In translation this means f/2.8 at 24mm and f/5.6 at 626mm

Direct link | Posted on Nov 24, 2011 at 06:31 UTC
Total: 11, showing: 1 – 11