Anvh

Joined: 4th July 2008

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Anvh
SmutjeUK wrote:
You even can get in to hot water if you take pictures of 'brand names' and then publish them without their written consent.
That's the strange thing about your story, why that and not the others?
Surely the face or body of the model is in a way also the "brand"/selling point of him/her and modeling surely also is an art?

Comment by Anvh posted on DSLR's banned in public at 27/11/2010 - 13:58

Anvh
johnriley wrote:
Quote:
Does that make sense?
The comment about manufacturers deciding to correct lenses in camera rather than in design hasn't really happened yet, but in time it could do. It would be even more clever to push inmdependent manufacturers out by keeping the correction ability strictly for marque lenses only, thus making them cheaper to make and more competitive. However, theres no current evidence that this is the intention. The thing that universally is allowed to drift is the distortion level and the cameras can now help in this respect.
I hope it stays that way.
Many compacts now a days have the correction standard i wonder if some "laziness" have slip in there. Maybe it's not really laziness but more a money question.

johnriley wrote:
The second point doesn't hold up as there is no apparent deterioration. I have looked, very, very closely and there is no detrimental effect aprt from the processing time. For architecture this will be very useful

Comparing with another lens isn't a valid comparison because it's a different lens.
But there is no other way, how else can you compare what the differnce in quality is with digital distortions correction?

I said it a bit wrong at first but there is no lost in quality by the correction because it spread the pixel/quality out to correct the distortion.
What i mean is that if you compare the corrected part of "optical" corrected lens (so to say) and compare the same with but then digital corrected there will be a differnce in the smaller details captured.
Digital correction lowers the amount of pixels in the corrected part.
Of course the lens must be good enough to use the pixel effectively to begin with.

I know i make it sound very confusing

Lets make it simpler.
If you stretch a 10mp photo 2 times as wide, it will result in a 20mp photo but it will have the details of a 10mp image since that's the original and you can't add details in post processing since you've no information about the details but because the 20mp holds the same information as the 10mp there is no actual lost of quality.
This basically what happen with digital correction but it's stretch differently.

If you can make the same panorama with out the need to stretch you will only gain in quality right? This what on lens would be that is distortion free.

I hope that makes the point clearer that i'm trying to make.

Comment by Anvh posted on 18-135mm DA WR at 27/11/2010 - 13:36

Anvh
johnriley wrote:
I think there is getting to be much confusion here. If I take photographs with people in them there is no question of the subjects having any copyright over my images.
Depends, if they are modeling for you than they have some rights i believe.
Also you can't use photos without consent of the "model" for commercial use connected with a product, company or brand ect. For streetphotography the artist can sell it as art though as far as i know so long it doesn't harm the image of the subject.

This at least how the law work in the Netherlands by my knowledge, no idea how it is in the UK.

Comment by Anvh posted on DSLR's banned in public at 27/11/2010 - 13:12

Anvh
Max sync speed so X isn't connected to the flash but with the speed the shutter moves, the faster it moves the faster the max sync speed can be.

Comment by Anvh posted on Under-exposure using flash with K-m at 27/11/2010 - 13:07

Anvh
Algernon wrote:
fatspider wrote:
I believe Stefan is trying to say the law has been introduced because the general public dont like to speak up for themselves and ask the photographer to stop taking their picture.
There was some talk about the copyright bill they rushed through
taking away the right to photograph people without their consent
in public. It was possibly dropped along with the right to use
images commercially free of charge when the photographer couldn't
be traced.
That's what I meant Alan.

Copyright is a strange thing.
If i go to England and take photos then the photos are protected under Dutch copyright law because the artist (me) is Dutch but the people in the photos would have English copyright law. It can get really confusing fast.

Comment by Anvh posted on DSLR's banned in public at 27/11/2010 - 12:57

Anvh
Robin128 wrote:
Minimum focus distance 30.3 cm.

Working distance 13 cm.
Minimum focus distance is measured from the sensor and Working distance from the front element i believe or maybe from the front part of the lens?

I use a polarising filter, certainly with plants you make the colours look more brilliant.
Not so sure about flower and insect, never compared.

Comment by Anvh posted on Macro 100mm f2.8 WR at 27/11/2010 - 12:44

Anvh
About focusspeed is something know about the focus throw of the MF ring?

Comment by Anvh posted on Pentax 18-135 initial test at 27/11/2010 - 12:42

Anvh
johnriley wrote:
Quote:
It's cheating though and degrade the IQ, I don't like it
I don't agree that anything in digital photography is cheating - to cheat you have to deliberately break rules for your advantage. Not sure that applies at all.

As regards a loss in quality, if there is one I can't spot it with images side by side on screen at 100%.
I haven't said everything digital is cheating but they are basically covering up a defect off a lens. It's useful though the correction but I rather have it that they make a good lens without the distortion then use software to correct it.
In such a way i find it cheating, i hope it doesn't make the lens designers lazy.

The quality lost is with the stretching of the pixels.
Without correction they are nicely square so to say but because of the correction the pixels get stretch out so there surely is some quality lost in there. It's a bit like upscaling a photo the effect.
The best way to see the differnce is to shoot one with a lens that doesn't need correction and compare it with a lens that does need correction.
You will see the in the distorted part will be a less detial in the corrected shot.
There is no real lost in quality because the quality stays the same of the photo, it's that one pixel on the sensor is now displayed on two pixels on the screen so it can not capture the details of an lens that doesn't need correction.
Basically you are lowering the amount of pixels with the correction.

Does that make sense?

Comment by Anvh posted on 18-135mm DA WR at 27/11/2010 - 12:36

Anvh
No i haven't because i already have a good macro around that range.
The 125mm is more interesting because it has a longer reach and is f/2.5 so that means shallower DOF and good bokeh.

Comment by Anvh posted on Manual Focus Lenses... at 26/11/2010 - 12:39

Anvh
So you're suggestion the law is there because people can or are afraid to come up for themselves?

Comment by Anvh posted on DSLR's banned in public at 26/11/2010 - 12:32

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