justinwonnacott

justinwonnacott

Lives in Canada ontario, Canada
Works as a photographer/teacher
Has a website at http://justinwonnacott.com
Joined on May 30, 2006

Comments

Total: 160, showing: 1 – 20
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On Canon EOS 5DS real-world sample gallery article (216 comments in total)
In reply to:

munro harrap: The Static shots are dreadfull. The noise much greater than it should be. How long since anyone on Dpreview got hold of a Lunar Pro meter with incident light cone and went and stood facing the camera where the subject is.? Eh? Too Bl**** lazy!!

Plus stopping down a lot gets rubbish results on a 50MP sensor-more than f8 is trouble ( I notice it gets worse after f9 on a D800.)

Plus, another thing called reciprocity law failure, the bugbear of digital sensors.
Just as doubling the distance from a light source reduces the illumination level FOUR times (not to half what it was before) so too reducing the illumination levels by stopping down reduces the ability of the sensor to record such low light levels properly at all.
A theoretically perfect standard lens with no vignetting at any aperture will still produce darker and darker results as you stop down more and more. Try it!

Rinse and repeat!!

"The Static shots are dreadfull. The noise much greater than it should be. How long since anyone on Dpreview got hold of a Lunar Pro meter with incident light cone and went and stood facing the camera where the subject is.? Eh? Too Bl**** lazy!!"

I think you mean "luna pro" and incident light hemisphere. Actually the samples are not bad. I have done three jobs in the last week with this camera - works great!

Direct link | Posted on Jul 21, 2015 at 02:15 UTC
On Canon EOS 5DS real-world sample gallery article (216 comments in total)
In reply to:

munro harrap: The Static shots are dreadfull. The noise much greater than it should be. How long since anyone on Dpreview got hold of a Lunar Pro meter with incident light cone and went and stood facing the camera where the subject is.? Eh? Too Bl**** lazy!!

Plus stopping down a lot gets rubbish results on a 50MP sensor-more than f8 is trouble ( I notice it gets worse after f9 on a D800.)

Plus, another thing called reciprocity law failure, the bugbear of digital sensors.
Just as doubling the distance from a light source reduces the illumination level FOUR times (not to half what it was before) so too reducing the illumination levels by stopping down reduces the ability of the sensor to record such low light levels properly at all.
A theoretically perfect standard lens with no vignetting at any aperture will still produce darker and darker results as you stop down more and more. Try it!

Rinse and repeat!!

I am curious about what you mean by "reciprocity failure" which needed to be taken into account when developing and exposing film under long exposure times and low light intensity because of film's non linear response - effectively lowering the ISO and contrast .

The inverse square law (which never "fails" )seems to describe what you are talking about in part.

Direct link | Posted on Jul 21, 2015 at 01:59 UTC

A return to nuclear tests in Nevada?

Direct link | Posted on Jul 12, 2015 at 17:07 UTC as 39th comment
On Canon EOS 5DS R sample gallery updated article (162 comments in total)

Where are the iso 1600 to 3200 shots made at average focal lengths and f stops (f4-8) ? Hopefully on a tripod! These samples are very limited in use without representing these exposure conditions for evaluation. It would also be very helpful if the samples were sorted by ISO - the gallery order is a pain to search through. The portrait shots look awful.

Direct link | Posted on Jul 7, 2015 at 16:01 UTC as 30th comment

Doh .... the headline is ridiculous.

Direct link | Posted on Jul 1, 2015 at 14:23 UTC as 10th comment

Lomography - overpriced mediocrity you can count on.

Direct link | Posted on May 28, 2015 at 22:55 UTC as 45th comment | 1 reply
On Fujifilm X-T10 First Impressions Review preview (544 comments in total)
In reply to:

coody: The camera's height seems not attractive.

Yeh . . . and it is too thick too . . very annoying, thick as a brick ;-)

Direct link | Posted on May 18, 2015 at 23:10 UTC
On Fujifilm X-T10 First Impressions Review preview (544 comments in total)

Still waiting for a better sensor, I would purchase this camera in a second if there were an T10A version option to buy with a bayer sensor.

Direct link | Posted on May 18, 2015 at 19:33 UTC as 90th comment | 2 replies
In reply to:

gehairing: What i (also) find nice on these great pictures : you see nobody !
No humans, no dogs... but i'm sure there where a lot of people around.
Just that we can't see them due to the ultra low sensitivity of the "film".
Great :o)

Eugene Atget did not include people in many of his images and the lack of people often added a lot to his visions of the city. He did create a sense of volume and space with different compositional strategies though.

Direct link | Posted on May 14, 2015 at 16:17 UTC
In reply to:

HakanL: Linnaeus Tripe? Really? That's his name?

I wonder if he was in fact the elder Tripe or was his Dad the old Tripe?

Direct link | Posted on May 13, 2015 at 21:07 UTC
On Canon EOS 5DS R real world sample gallery posted article (445 comments in total)
In reply to:

HowaboutRAW: Yes, thanks for the raw file, but that's an odd way of deploying them. (Grammar is correct here.)

I look forward to checking them out in ACR 9.

HowaboutWAR ???

Direct link | Posted on May 13, 2015 at 20:32 UTC

The sky has been retouched in the image of the Buddha . Nicely retouched to be sure but the dynamic range and huge blue sensitivity of the negatives precluded getting a full scale age in one shot.

Direct link | Posted on May 13, 2015 at 18:17 UTC as 5th comment | 1 reply
In reply to:

paul simon king: Just been told that LR6 perpetual licence won't get any upgrades should any be released

Can anyone corroborate this this?

Okay Barry.... I cannot believe you . . . I want the same as I paid for and got with the last major release between 5 and 6 - I suppose that is the typical intermediate fixes you are referring to.

We are done okay . . . bye bye

Direct link | Posted on Apr 24, 2015 at 18:48 UTC
In reply to:

paul simon king: Just been told that LR6 perpetual licence won't get any upgrades should any be released

Can anyone corroborate this this?

Thank you for that Paul Simon King, Barry Pearson I think my explanation of what I expect is clear but to spell it out again for you I stated " locked out of incremental decimal updates " in my last post. For example from version 5.5 to version 5.7, or to make it even clearer I am talking about the updates that are posted free of charge to purchasers of LR that fall between major releases such as version 5 or version 6, or hypothetically between version 6 and the as yet unreleased version 7.

I could go on but what is the point?

Direct link | Posted on Apr 24, 2015 at 18:09 UTC
In reply to:

paul simon king: Just been told that LR6 perpetual licence won't get any upgrades should any be released

Can anyone corroborate this this?

Well Barry . . . it is simple ...., in the past I did get the incremental upgrades with my standalone LR purchase so, if Adobe has already taken my money (they did) and they change that policy after I have purchased the software without notifying me in advance I will feel duped, ripped off or misled into buying something different from their normal custom.

As far as the truth or fiction of the rumor suggested in the original post by King about how LR6 standalone purchasers will ( or might be ) locked out of incremental decimal updates . Where - or who - is the source for this rumor? If none is stated , it really is just an opinion liable to meaningless "oh I can confirm that I heard that too, but I cannot back it up" But if you have something verifiable about this I would appreciate you saying why you believe at and where you heard it too.

Direct link | Posted on Apr 24, 2015 at 17:16 UTC
In reply to:

paul simon king: Just been told that LR6 perpetual licence won't get any upgrades should any be released

Can anyone corroborate this this?

That would be a total rip off if it is true - what was the source for that statement?

Direct link | Posted on Apr 24, 2015 at 15:47 UTC

For me, I will use panorama in LR6 mostly as a panorama preview , most of the work I make with panoramas requires the layers and layer masks that the tool makes in photoshop. The LR6 version is not configurable enough in terms of output etcetera .... and seeing that I loathe the las vegas, trashy, fantasy look of HDR processing I will not be using that part of the software either.- So the upgrade is not exactly a compelling need, but you have to have it to get the upgrades before LR7 I guess.

Direct link | Posted on Apr 24, 2015 at 15:45 UTC as 12th comment | 3 replies
In reply to:

Mssimo: Just confirmed that HDR images can also be merged into pano. Welcome the HDR Raw Pano.

The lack of layers in the output of the pano is a huge downside for dealing with stitch errors where mask editing is needed. Proof pano in lightroom .... Make real pano in photoshop for me. Fluff implementation in many ways.

Direct link | Posted on Apr 24, 2015 at 02:58 UTC

Blobs of light, the lensbaby specialty. Maybe Lensbaby Inc. should sell special effect plugins and filters for photoshop too? Or absorbent lo-fi paper to print on or make transfers from with a couple of watercolour brushes and some paint pots thrown into the deal? Their original simple lens on the end of a flex tube, was pretty inexpensive compared to their recent products and did nearly everything you could ask blur-wise. Maybe more than this new offering.

Direct link | Posted on Apr 12, 2015 at 00:15 UTC as 39th comment

A portrait lens does not have to mean unsharp -in my understanding of that term - a biggish aperture with a longer than normal focal length giving good control of the foreground/background relationship and a somewhat compressed perspective that is kind to faces does the job. Think an f2 135mm lens. Now, this lens seems like a wannabee "soft focus" lens which is quite a different animal .

The rodenstock imagon and other soft focus designs used special aperture stops with a central opening surrounded by other ( not always round) smaller openings outside the central one. The effect was a sharp image within a luminous glow. Five hundred bucks for this lens seems very expensive, pretty lens barrel though.

Direct link | Posted on Apr 11, 2015 at 23:57 UTC as 41st comment
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