George Veltchev

George Veltchev

Lives in South Africa Johannesburg, South Africa
Works as a Architectural Model Builder
Joined on Jan 14, 2011

Comments

Total: 253, showing: 61 – 80
« First‹ Previous23456Next ›Last »
On Leica T Typ 701 real-world samples gallery updated article (104 comments in total)
In reply to:

George Veltchev: the face of disappointment has a new name ... Leica T !

with pleasure Eelco ..please, have a look the sample images taken at higher ISO ...seriously ... the noise level there is indistinguishable for the entry level DSLRs from the late 90's .... agree, even my old PowerShot G1 X I can do it better !!!

Direct link | Posted on Jul 8, 2014 at 16:45 UTC
On What is equivalence and why should I care? article (2097 comments in total)
In reply to:

Sdaniella: given objectives are with:
identical subject in a given lighting situation
at identical distance (identical perspective: aov on subject and background)
with identical composition (framing fov)
identical aperture diameters (if available)
for identical dof

So, ...
what systems can do what others cannot:

what systems can do the same things (but in more compact formats)

identical overlaps in common tell us what's doable in different systems
where IQ varies according to different size of system for the same objectives above

what's not doable, that's only available in larger and wider systems (larger aperture diameters) is where one may seek it in larger systems if not possible in smaller systems not as wide (too tele)

publishing:
actual aperture diameters
and
angles (horizontal, vertical, diagonal)
is key for cross platform comparison of what's available vs unavailable

I hope dpr/mfrs are more up front about it in their specs, and claims

Well, I though that AoV on each model is reciprocal to sum of the height of the particular sensor in millimeters multiplied by the length and divided by the focal length, minus square root of 3.14 ...hm for example (24x36)-√3.14=AoV ..hm ..I was wrong, but thank you S. Daniella !

Direct link | Posted on Jul 8, 2014 at 16:38 UTC
On Leica T Typ 701 real-world samples gallery updated article (104 comments in total)

the face of disappointment has a new name ... Leica T !

Direct link | Posted on Jul 7, 2014 at 15:37 UTC as 18th comment | 3 replies
On L1010327 photo in dpreview review samples's photo gallery (2 comments in total)

bellow average performance at this ISO settings ...

Direct link | Posted on Jul 7, 2014 at 15:33 UTC as 2nd comment
On What is equivalence and why should I care? article (2097 comments in total)
In reply to:

Sdaniella: given objectives are with:
identical subject in a given lighting situation
at identical distance (identical perspective: aov on subject and background)
with identical composition (framing fov)
identical aperture diameters (if available)
for identical dof

So, ...
what systems can do what others cannot:

what systems can do the same things (but in more compact formats)

identical overlaps in common tell us what's doable in different systems
where IQ varies according to different size of system for the same objectives above

what's not doable, that's only available in larger and wider systems (larger aperture diameters) is where one may seek it in larger systems if not possible in smaller systems not as wide (too tele)

publishing:
actual aperture diameters
and
angles (horizontal, vertical, diagonal)
is key for cross platform comparison of what's available vs unavailable

I hope dpr/mfrs are more up front about it in their specs, and claims

Could you repeat that, please ...and if possible in English ?

Direct link | Posted on Jul 7, 2014 at 12:14 UTC
On My professional DSLR or SLR challenge (9 comments in total)
In reply to:

JamesD28: And what is meant by "professional" DSLR? Full Frame?

NO !!!... cellphone cameras included ..

Direct link | Posted on Jul 6, 2014 at 08:38 UTC
On A look at the Lomography Petzval 85mm F2.2 lens article (166 comments in total)
In reply to:

ProfHankD: One of the problems with this is that Petzval lenses were generally used with large film formats that were not enlarged for viewing, so apparent sharpness was fairly good despite mediocre lppmm resolution. I'm not really seeing the same look here, although I do believe the lens replicates a Petzval formula fairly well. Put another way, not all lens aberrations scale with format, and there are other lenses that make FF images that arguably look more like old large-format Petzval images than these do (I'm thinking of some old USSR lenses).

One could also argue that the lens should be used on a tripod with an ND filter to give the longish exposures also associated with Petzvals (e.g., for sharp portraits with motion-blurred tree leaves in the background).

Anyway, it's interesting and looks very distinctive.

Also, if you're gonna use a manual lens, install a real focus screen or use a camera with peeking live view.

a drum from used toilet paper attached to a camera can look equally distinctive and certainly can produce similar optical results even without any lenses embedded ... so go for a single ply paper roll DIY style ...that is what I call an investment !

Direct link | Posted on Jul 3, 2014 at 20:28 UTC
On A look at the Lomography Petzval 85mm F2.2 lens article (166 comments in total)

unbelievably poor performance of this optics with terrible bokeh which create headache and softness typical for the cheapest mass production lenses from the Soviet era ...... if you bye one, keep it behind a showcase ... and never attached to your camera body ...

Direct link | Posted on Jul 2, 2014 at 17:54 UTC as 80th comment
On Casio Challenge challenge (5 comments in total)
In reply to:

George Veltchev: Who is Casio ?

;-)

Direct link | Posted on Jul 1, 2014 at 17:53 UTC
On Casio Challenge challenge (5 comments in total)

Who is Casio ?

Direct link | Posted on Jul 1, 2014 at 06:22 UTC as 2nd comment | 2 replies
On Tamron SP 150-600mm F/5-6.3 Di VC USD Lab Test Review preview (246 comments in total)
In reply to:

George Veltchev: My copy of this lens perform superbly at 600mm wide open ... please see example here : http://www.newphotoland.com/showphoto.php?photo=22716&cat=689

slightly cropped and reduced to the required size of this particular website Rich ...thanks !

Direct link | Posted on Jun 27, 2014 at 05:53 UTC
On Tamron SP 150-600mm F/5-6.3 Di VC USD Lab Test Review preview (246 comments in total)

My copy of this lens perform superbly at 600mm wide open ... please see example here : http://www.newphotoland.com/showphoto.php?photo=22716&cat=689

Direct link | Posted on Jun 26, 2014 at 07:13 UTC as 58th comment | 5 replies
On Tamron SP 150-600mm F/5-6.3 Di VC USD Lab Test Review preview (246 comments in total)
In reply to:

Kris in CT: I have had mine for about a month now. I don't see the CA they are talking about and I shoot raw. I have a set here, mostly on a D7100 and some with a D600. Maybe I missed it, but all their data is from Canon's 7D and 5Dm3. I think the lens performs very well on the D7100 and in general I have seen better samples from Nikon cameras then Canon on flickr. On the D7100 it tracks BIF very well. If you want to look at a few of my faves at various FL and Apertures all the exif is there

https://www.flickr.com/photos/coastalconn/sets/72157645413231013/

you may eat your words Kris ... please see my sample gallery at 500px.( http://500px.com/model_99 ) some of the images there are taken with this Tamron on a FF Canon 6D ... please, I wanna hear your comments !

Direct link | Posted on Jun 26, 2014 at 06:47 UTC
On Papilio demodocus in the My Best Photo of the Week challenge (13 comments in total)
In reply to:

madras91: Superb!

Congrats

Thanks !

Direct link | Posted on Jun 18, 2014 at 15:15 UTC
On Papilio demodocus in the My Best Photo of the Week challenge (13 comments in total)
In reply to:

jameshax: Well done. Congratulations.

Thank you !

Direct link | Posted on Jun 18, 2014 at 15:15 UTC
On Papilio demodocus in the My Best Photo of the Week challenge (13 comments in total)
In reply to:

babalu: Congratulations, this photo has a magic quality to it, as if the butterfly were a fairy surrounded by sparkling magic powder ...

Thanks !

Direct link | Posted on Jun 18, 2014 at 15:15 UTC
On Papilio demodocus in the My Best Photo of the Week challenge (13 comments in total)
In reply to:

mihayo: Fantastic! I can't find the 6th star to vote...

:-)

Thanks for the encouragement my friend !!!

Direct link | Posted on Jun 18, 2014 at 05:11 UTC
On Papilio demodocus in the My Best Photo of the Week challenge (13 comments in total)
In reply to:

RuthC: Congratulations, George Veltchev, on your well deserved win in this weekly challenge. This is a really beautiful capture of a butterfly against the softly-muted background, in pastel colours which enhance the bright clarity of the butterfly wearing its finest attire. Absolutely stunning, in my opinion. Ruth :-)

Thank you Ruth for your wonderful comments here ...appreciated !!!

Direct link | Posted on Jun 18, 2014 at 05:11 UTC
On Papilio demodocus in the My Best Photo of the Week challenge (13 comments in total)
In reply to:

karamanda13: Love this. Congratulations on the win.

Thanks a lot mate !

Direct link | Posted on Jun 18, 2014 at 05:10 UTC

I know ... not political statements, but now I understand why the Germans lost the damn war ...

Direct link | Posted on Jun 14, 2014 at 06:58 UTC as 97th comment | 1 reply
Total: 253, showing: 61 – 80
« First‹ Previous23456Next ›Last »