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We're accepting mobile photos + New assigment: Going mobile

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Digikhmer
1935 posts
68
Message posted at 12/07/2012, 14:44:48 PM by Digikhmer
It is the second time that I jumped in. It has been very costly for my acceptance ratio.
I do agree with you (Alvera). The voting system is no good. Comparing to the Eurovision, we know the rule and we can see the progression of the winner. DT rule is abstract, blur, gray and whatever you want to call it but it is not crystal clear. Nobody know or can tell how the calculation is done.
Inspirations and opportunities ...

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BCritchley
3724 posts
80
Message posted at 12/07/2012, 15:28:24 PM by BCritchley - member is an admin
The calculation is easy, simple and clear. There is no secret to it, it's very basic maths. If a picture gets 10 votes ranging from 1 to 5, you simply add up all the points and divide by the number of votes which in this case was 10, you then have a mean value, this is your score. There is no gray area or unfairness on DT's part, remember DTis giving away $600 of prize money every 6 weeks or so and leave all decisions about the winners to us.

When we talk about the voting system not be fair ( I have not said this ) we talk about that you can see who you vote for, people with lots of friends possible could have an advantage. I'm not sure if this is the case though, I have voted for everyone on the picture alone and not taken in to account who took it, eg I love the work of RED but only found out today she had two shots in the contest that I have already voted on. I would like to think most voters would work in the same way.

Good luck to all :)
Canon 5D MK III & II, Canon 300mm F/2.8L, Canon L 180mm macr...

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Bradcalkins
2544 posts
84
Message posted at 12/07/2012, 15:46:01 PM by Bradcalkins
I dodn't mean to suggest names should be hidden because I vote for friends, but I'm unlikely, for example to vote a photo from someone I know a '1' - I'd just not vote on it. But if it was side by side with a stronger image it would be easy to vote the other 'up'. I think an A/B comparison would make voting easier, but not sure it would be any more fair.

While I agree with Brett that the calculation is probably simple enough, it isn't that transparent - for example what if one image only gets one vote of '5'? Should it win? What if one image gets way more 5's, but due to a couple of 1's has a lower average? In reality, there seems to be a pretty good spread of votes, and no image seems to get skewed too far. I don't think a subjective contest can really ever be truly fair.

It is an assignment, not a publically run lottery, so I don't have any problem with DT choosing a winner any way they want, I enter for exposure and hope for sales, plus maybe a prize. Also keeps me doing new stuff.
Olympus OM-D EM-1: 12-40mm f/2.8, 75mm f1.8, 25mm f1.4, 50-2...

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Digikhmer
1935 posts
68
Message edited at 12/07/2012, 16:01:38 PM by Digikhmer
A simple question for BCristchley, according to you who will be the winner ?

PIC1 : 5 votes, *, **, ***, ****, ***** total 15*
PIC2 : 3 votes with *****, *****, ***** total 15*

The winner is the one who has more voter or more star ? According to your calculation the second is the winner. In that case, the winner picture need only one 5 stars vote to win. is it correct ?

It must have something else in the calculation that I call "gray"

Inspirations and opportunities ...

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BCritchley
3724 posts
80
Message posted at 12/07/2012, 16:28:41 PM by BCritchley - member is an admin
The winner would be pic3 with an average of 5 stars IMHO.
Canon 5D MK III & II, Canon 300mm F/2.8L, Canon L 180mm macr...

Uploaded files:2267 | Total Sales: 10712
Digikhmer
1935 posts
68
Message edited at 12/07/2012, 16:49:28 PM by Digikhmer
@BCritchley: Your reply makes me laugh really. In my example, there is only two pictures in the contest and the winner is the third one :D :D :D
You illustrate perfectly what I mentioned above about the "gray".
Never mind, it is a simple contest to increase the exposure and to have fun.
Inspirations and opportunities ...

Uploaded files:1344 | Total Sales: 1326
BCritchley
3724 posts
80
Message posted at 12/07/2012, 17:00:09 PM by BCritchley - member is an admin
Lol its a typo im on the move on my mobile. Pic 2 :-)
Canon 5D MK III & II, Canon 300mm F/2.8L, Canon L 180mm macr...

Uploaded files:2267 | Total Sales: 10712
Wisconsinart
1534 posts
80
Message posted at 12/07/2012, 18:16:39 PM by Wisconsinart
I've never won so the voting system must be flawed. :-)
Nikon D800, D100, Canon G15

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Alvera
2660 posts
77
Message posted at 12/08/2012, 03:01:49 AM by Alvera

Originally posted by Wisconsinart:
Quoted Message: I`ve never won so the voting system must be flawed. :-)

Me neither! Soon, I will be a fallen king and must go for president! :))
No joke, an editors vote or from DT admins (ones with photographic skills) will reinvigorate this assignment. They will indicate us, with that vote, what is good and what is bad for stock. They must say something like this: first place goes to User for composition, lighting, concept etc.
Or just put an symbolic prize - not money, just a tshirt or 5 credits - I am also a buyer.
Nikon. 4x4 car for wildlife adventures. Inkscape for vectors...

Uploaded files:3933 | Total Sales: 4571
BCritchley
3724 posts
80
Message posted at 12/08/2012, 03:50:21 AM by BCritchley - member is an admin
There should be a wooden spoon prize for last place, that must suck.
Canon 5D MK III & II, Canon 300mm F/2.8L, Canon L 180mm macr...

Uploaded files:2267 | Total Sales: 10712
Alvera
2660 posts
77
Message posted at 12/08/2012, 04:29:37 AM by Alvera

Originally posted by BCritchley:
Quoted Message: There should be a wooden spoon prize for last place, that must suck.

lol, best tip! :)
Nikon. 4x4 car for wildlife adventures. Inkscape for vectors...

Uploaded files:3933 | Total Sales: 4571
Digikhmer
1935 posts
68
Message posted at 12/08/2012, 14:22:29 PM by Digikhmer
I hope that the algorithm of BCritchley is the one which is used.
In that case, I will kindly ask all dear contributors to do not vote for my pictures ;) unless you keep voting 5 stars

 At the Trishaws Station    Innocent Colorful smile   

bacause I have already one vote with 5 stars and my average is already 5.
Inspirations and opportunities ...

Uploaded files:1344 | Total Sales: 1326
Alvera
2660 posts
77
Message posted at 12/08/2012, 14:32:41 PM by Alvera
One star from me for both photos.
My algorithm is here: *****=5/*** minus 5*2 (two photos per user means ***** multiplied by three stars) minus [2^5 (if accepted photos are from same user at same time)] minus *** 3 star^2.
Nikon. 4x4 car for wildlife adventures. Inkscape for vectors...

Uploaded files:3933 | Total Sales: 4571
Grisho
697 posts
78
Message posted at 12/08/2012, 14:49:12 PM by Grisho - member is an admin

Originally posted by Alvera:
Quoted Message: One star from me for both photos.My algorithm is here: *****=5/*** minus 5*2 (two photos per user means ***** multiplied by three stars) minus [2^5 (if accepted photos are from same user at same time)] minus *** 3 star^2.


Please stand by while I take a degree in Mathematical Sciences so I can understand your formula.
Fuji X100S, Canon 550D

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Alvera
2660 posts
77
Message posted at 12/08/2012, 16:18:11 PM by Alvera

Originally posted by Grisho:
Quoted Message: Please stand by while I take a degree in Mathematical Sciences so I can understand your formula.

This is the simple one, regulary I use one more complicated.
Nikon. 4x4 car for wildlife adventures. Inkscape for vectors...

Uploaded files:3933 | Total Sales: 4571
Iledic
3 posts
Message posted at 12/09/2012, 00:52:21 AM by Iledic
I could not send my photo in competition...and I use mobile with all of my photos...I know that I have to learn and practice to improve my work...and still...this is my theme...
Next time...oh...would it be the next time...
:-)
Some great photos in competition...congratulation...
Samsung i9070 Sony DSC-W90 Nikon P100

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Digikhmer
1935 posts
68
Message posted at 12/09/2012, 03:19:56 AM by Digikhmer

Originally posted by Alvera:
Quoted Message: One star from me for both photos.

Poor of me :( Too late, it is not for this time that I will have an average of 5 :(

Seriously, it seems that not a lot of buyer downloaded the submitted pictures before the votes. It doubt that it is a kind of picture that designers are looking for ... too much filter effects reduce the usability of the picture... they look like a family private pictures for the majority of them.
Inspirations and opportunities ...

Uploaded files:1344 | Total Sales: 1326
Alvera
2660 posts
77
Message posted at 12/09/2012, 10:35:15 AM by Alvera
If Dt goes this way, be sure that will be profit. For DT and for us.
Nikon. 4x4 car for wildlife adventures. Inkscape for vectors...

Uploaded files:3933 | Total Sales: 4571
Enigmacypher
423 posts
71
Message edited at 12/09/2012, 21:35:52 PM by Enigmacypher
The instructions on voting state the following:

"For accurate results, please vote for all images uploaded using the full range scale from 1 to 5 and come back daily to vote newly approved images during submission stage."

I wish they would add the phrase "with 5 being the best" after stating the scale. It isn't obvious whether 1 or 5 is the best unless you have looked at the scores of previous winners.


Uploaded files:61 | Total Sales: 80
Red
1712 posts
Message posted at 12/09/2012, 22:08:40 PM by Red
Yes! I've asked that in the past and had to figure out for myself that 5 is better than 1. I originally thought that 1 for "first" was the best. I wonder how many new voters think that too. Add some more instructions for those who never visit the forums and also clarify the "vote for all images," I'm wondering if not voting for all images skews the results?


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