feraudy

feraudy

Lives in France Clamart, France
Works as a Technical Writer
Joined on Jan 4, 2002
About me:

Love taking pictures to show you how beautiful France
is.

Comments

Total: 25, showing: 1 – 20
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On A closer look at the Nikon Coolpix P900 megazoom article (86 comments in total)
In reply to:

Wye Photography: It will be very interesting looking at sample pix from all over the zoom range especially at the long end. Will I laugh or cry or both!

An ideal camera for pedos, it's bound to sell well!

The first thing that came to mind was taking pics of small birds.
I'd like to see how the moon comes out with this lens.

Direct link | Posted on Mar 2, 2015 at 12:38 UTC
On A closer look at the Nikon Coolpix P900 megazoom article (86 comments in total)
In reply to:

ProfHankD: This is one of the few ways in which small sensors can still win. The camera's lens is huge... until you compare it to other lenses approaching 2000mm f/6.3. My closest FF lens is a 1250mm f/11 mirror lens; it could swallow about 4 of this camera, and it produces bokeh full of doughnuts. On the other hand, the sensor here is around 5.6X crop factor, which means the lens focal length range is really about 4-350mm... which explains why it is so much smaller than my mirror lens. Of course, that is still an awesome optical achievement: a typical 70-200mm f/4 FF lens is bigger than this lens. The price is also impressively low.

In sum, this seems like one heck of a versatile camera for the price. On a pan/tilt mount, this could be an amazing security camera. It probably is fixing a multitude of optical sins in firmware, with IQ suffering somewhat, but it's still darn impressive.

What brand mirror lens has a focal length of 1250?
Just curious.

Direct link | Posted on Mar 2, 2015 at 12:36 UTC
In reply to:

tkbslc: atmospheric distortion + haze + diffraction + camera shake = FANTASTIC PHOTOS!!!

Yes, I noticed haze and diffraction with my Nikon 1000mm mirror lens.
But at reasonably close distances this is less of a problem.
As for camera shake, I wonder if a tripod will be a necessity.

Direct link | Posted on Mar 2, 2015 at 09:31 UTC
In reply to:

Simple man: Inspired photos with flair......

Gotta love Nikon Marketing.

Better than inspired photos with flare.

Direct link | Posted on Jan 6, 2015 at 11:17 UTC

Hopefully this could be implemented with any camera that has a sensor cleaner that uses shake, providing the control of the movement can be made fine enough.
It's only of interest for the photography of static objects.

Direct link | Posted on Dec 7, 2014 at 20:51 UTC as 18th comment

I actually thought of this a year ago, but then I wondered if the curvature would not need to change according to the lens. So it might work very well in a compact camera with a fixed focal length lens. In any case technology always involves tradeoffs.
Maybe Ricoh's idea of changing the sensor with the lens would be the rihgt thing here.
I hope they cant patent the very idea of a curved sensor.

Direct link | Posted on Jun 18, 2014 at 08:51 UTC as 100th comment | 2 replies
On Lensbaby releases 5.8mm F3.5 circular fisheye lens article (20 comments in total)

Wait until you see the tests. This might have lots of chromatic abberration.

Direct link | Posted on Apr 12, 2014 at 12:57 UTC as 8th comment
On Nikon D4s First Impressions Review preview (1042 comments in total)
In reply to:

amandl: Nikon D4s - why this gadget sucks!
I bought a D4s..took my first shots (RAW)- no chance getting them into Lightroom (latest ver) in a propriet way. Converting them to DNG and doing an import is not an option... OK why should Nikon sent any information to companies like Adobe for changes in their RAW specification. All real pros are using Nikon software - that seems to be the thought at those japanese Productmanagers..
ok so far - I've to wait till Adobe has done the reverse engineering to geht the changes in the format...
2nd why buying a new released model is no more option for me was - I put the Pocketwizard mini TT1 onto the D4s. switched on the Flex TT5 receivers (all on latest Firmware) triggered the Cam in higspeed mode since I had to do some higespeed shootings and... the flashes where only triggered at the first shutter release... Answer from Nikon Support: not compatible... and 3rd party product... not supported... so that's why I can say the D4s is a useless pice of rubbish!

Your rant reeks of anger. Not very objective.

Direct link | Posted on Apr 4, 2014 at 20:37 UTC

Why are those kids living in such primitive unhygienic circumstances?
Why arent they in front of their game consoles?
These kids will end up being unable to cope in the digital world!
Just kidding.

Direct link | Posted on Mar 26, 2014 at 12:53 UTC as 67th comment | 2 replies
In reply to:

Der Steppenwolf: What a piece of c***! This is one of prime examples of "more money then brains".

You meant more money than brains

Direct link | Posted on Nov 24, 2013 at 21:15 UTC
On 10 Photo Editing Programs (that aren't Photoshop) article (355 comments in total)

Picture Window is an amazing piece of software for a low price.
It's my current favourite.

Direct link | Posted on Sep 26, 2013 at 07:24 UTC as 10th comment
On The GigaPan EPIC Pro article (40 comments in total)

There is an alternate called Panogear.
It would be interesting to copare this with GigaPan.

Direct link | Posted on Jun 18, 2013 at 19:54 UTC as 5th comment
On Accessory Review: GigaPan Epic Pro article (13 comments in total)
In reply to:

Nikonworks: In today's world I feel this is a bit of overkill.

I shoot panos with my tripod (mono-pod, even hand held at times),
and the great, free stitiching program Microsft Ice.

Many of my panos include people which ICE nicely compensates for thier movement, leaving very few clone touch-ups required.

This way I can shoot fast and can change vantage points on the spur of the moment.

Of course there is a place for a head such as this GigPan, but not in my bag.

I dont think it's overkill. In all too many circumstances in which I have tried to manually make a panoramic shot with a long lens, requiring both vertical and horizontal movement, I have forgotten some part of the picture.

Direct link | Posted on Jun 18, 2013 at 19:46 UTC
In reply to:

B-rad: What a rip off. Anyone who buys this needs their head examined. PERIOD.

I would say that if they can afford to buy this then they are
pretty rich and not only are their heads worth examining and admiring but their homes as well.
Tough titty for those who dont have the money.

Direct link | Posted on May 15, 2013 at 11:00 UTC
In reply to:

kodachromeguy: I wish someone would make a shift lens specifically for APS-C or micro 4/3, maybe 15, 18, or 20 mm . It could be smaller than these bulky full-frame units.

Somewhat agreed. There could be a shift lens compact camera too, with the lens permanently shifted, and the lens design optimized for that position.
However if you are serious into photography you are probably going to be going to full frame or larger format.

Direct link | Posted on Mar 14, 2013 at 07:24 UTC
In reply to:

kewlguy: I got my Canon 24 TSE for $1700, this Samyang is not cheap either. The only aberration on 24 TSE L is severe coma in the corners (unshifted) - hopefully the Samyang's better corrected in this regard (while on par in other parameters).

I suppose you have the first version of the Canon lens. The second version leaves it in the dust.

Direct link | Posted on Mar 14, 2013 at 07:21 UTC
In reply to:

Mssimo: 60% chance of being as good if not better than nikon/canon equivalents....well maybe like 50% for canon and 90% chance of being better than nikon T-S.

100% for Sony since they don't have TS as far as I know. (aside from old Minolta lenses)

Stevo is right.

Direct link | Posted on Mar 14, 2013 at 07:20 UTC
In reply to:

gl2k: It's so ridiculous. Smartphones provide us with 300dpi and even more while PC monitors deliver an abysmal low dpi count.

The viewing distance for a monitor is not the same as for a smartphone, for one. Secondly a smartphone screen is much smaller: it might actually be hard to scale up.

Direct link | Posted on Feb 15, 2013 at 09:39 UTC
In reply to:

rrccad: odd .. i thought nikon claimed that flourite had no advantages .. and was inferior ..

"Nikon developed ED (Extra-low Dispersion) glass to enable the production of lenses that offer superior sharpness and color correction by minimizing chromatic aberration.
Put simply, chromatic aberration is a type of image and color dispersion that occurs when light rays of varying wavelengths pass through optical glass. In the past, correcting this problem for telephoto lenses required special optical elements that offer anomalous dispersion characteristics - specifically calcium fluoride crystals. However, fluorite easily cracks and is sensitive to temperature changes that can adversely affect focusing by altering the lens' refractive index."

I hope they fixed that little problem they were having with flourite before putting it into a 18K supertelephoto :)

You mean fluorite, flourite is a brand of flour with which I can make great cakes.
Yes, they probably put the fluorite elements into a special shock-protected casing with a refrigerator ;).

This is a bit speculative:
Special ED glass requires rare-earth elements. Many rare earths are getting very hard to find, because China is hoarding them, so it's back to fluorite.

Direct link | Posted on Jan 29, 2013 at 09:55 UTC
In reply to:

Marty4650: The problem here was the corrupt BOD who were hiding their own incompetence. In a perfect world, Woodford should have gotten praise for uncovering this, and not been terminated and subject to slander.

There are only two possibilities here. Either Woodford was the only honest man in the room, or he simply chose to NOT go to prison for someone else's crimes. Either way, I find his actions commendable.

I'll second that.
There are very few CEO's who have the guts to do what Woodford did.

Direct link | Posted on Dec 1, 2012 at 13:08 UTC
Total: 25, showing: 1 – 20
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