[LRflex] Re: Bridges better than Reflexes? Difference - ImageSharpening
- From: Philippe Amard <phamard@xxxxxxxxxxxxxx>
- To: leicareflex@xxxxxxxxxxxxx
- Date: Mon, 14 Nov 2005 08:28:19 +0100
Pity you live so far across the ocean; I still have a Pentium 200
waiting to be switched on back to life in the corner of the room ...
Wish you good health anyhow.
Yours
Phileica
PS I couldn't see the pict either if this can restore confidence in your
most respectable gear
Jerry Lehrer wrote:
>Douglas,
>
>No, I AM the ANTIQUE.
>
>While i would love to have a Pentium 5, Windows 2006, computer
>with a 21 inch flat screen; I can't do it on Social Security. My
>prescription bills alone would pay for the best computer in the world.
>
>Jerry
>
>Douglas Sharp wrote:
>
>
>
>>Jerry,
>>are you an antique dealer? ;-)
>>Nice to hear that you bought some really reliable stuff, pity you can't
>>see the fine detail on the "black" shots though, brightening them up
>>would have faked the results.
>>cheers
>>Douglas
>>
>>Jerry Lehrer wrote:
>>
>>
>>
>>>Douglas,
>>>
>>>Great, I suppose. All looks IDENTICAL to me with my 10 year
>>>old computer, running Win 3.1 on a 486 with 16Mm of RAM. on
>>>a 12 inch screen. All black.
>>>
>>>jerry
>>>
>>>Douglas Sharp wrote:
>>>
>>>
>>>
>>>
>>>
>>>>Just as a matter of interest (to me at least) hopefully to some of you
>>>>ot there in LRFLEX land
>>>>Focus Magic sharpening, one of the best sharpeners around, sharpened
>>>>with setting 1 (minimum)
>>>>http://gallery.leica-users.org/New-Old-Pictures/PB130001b_DIFF_FMjpg
>>>>It's easy to see that FM sharpens the edges to get a sharpening effect.
>>>>
>>>>In comparison, Neat Image, combined noise reduction(all channels) and
>>>>sharpening in the luminance channel only.
>>>>http://gallery.leica-users.org/New-Old-Pictures/PB130001b_DIFF_NI
>>>>Sharpening is not limited to the edges with Neat Image, this explains
>>>>the extra "shine" on metallic surfaces.
>>>>My experience however, shows that both methods have their merits, it all
>>>>depends on the input data.
>>>>Douglas
>>>>
>>>>Douglas Sharp wrote:
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>>An additional image, the difference between original and processed.
>>>>>http://gallery.leica-users.org/New-Old-Pictures/PB130001b_difference
>>>>>This shows quite clearly where the processes worked, the blue lines are
>>>>>the chromatic abberation, the lighter parts, sharpening in the luminance
>>>>>channel.
>>>>>the lighter it is the greater the difference, black is where one image
>>>>>cancels out the other by destructive interference, an old trick from
>>>>>geophysical data processing
>>>>>for analysing and attenuating noise (invert and add).
>>>>>Douglas
>>>>>Douglas
>>>>>
>>>>>
>>>>>Douglas Sharp wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>>By the way, if you download both in PS-Elements 3.0 (if you have it) you
>>>>>>can compare the two shots on one split screen.
>>>>>>Douglas
>>>>>>
>>>>>>Douglas Sharp wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>>Xavier,
>>>>>>>I must answer your question with a clear NO - however you can get damned
>>>>>>>close if you do a little post processing.
>>>>>>>I hope you don't mind, I've posted your image and my correction at:
>>>>>>>
>>>>>>>http://gallery.leica-users.org/New-Old-Pictures/PB130001b your original
>>>>>>>http://gallery.leica-users.org/New-Old-Pictures/PB130001b_edited_2
>>>>>>>
>>>>>>>
>>>>>>>Nice old camera, some time ago you mentioned DxO as a processing option,
>>>>>>>the alternative is PTlens (freeware)
>>>>>>>I ran your image through PTlens to correct the chromatic aberration (the
>>>>>>>bright blue edges on the adjustment ring, particularly strong above the
>>>>>>>500 shutter speed) and subsequently ran the whole thing through Neat
>>>>>>>Image to reduce noise and sharpen in the luminance (y) channel (to avoid
>>>>>>>bright edging).
>>>>>>>The improvement of the image is very obvious, considerably reduced
>>>>>>>fringing and the meatl parts look more "metallic" after Neat Image, and
>>>>>>>the whole job only took about 3 minutes.
>>>>>>>If you would like to try it -
>>>>>>>1) download and install PTlens - in PS or PS Elements or whichever other
>>>>>>>Image Processing you use.
>>>>>>>2) Check chromatic aberration (click in the box, make sure fish-eye,
>>>>>>>vignetting and distortion are unchecked)
>>>>>>>BTW, If your camera lens combination is listed you can set the camera
>>>>>>>and focal length and use distortion correction too
>>>>>>>4) Zoom into a part of the image where fringing is obvious
>>>>>>>5) Set slider Blue-Yellow to between +0.0042 and + 0.0047 (I used
>>>>>>>+0.0044)
>>>>>>>Click OK and your image is already improved.
>>>>>>>For noise reduction and sharpening:
>>>>>>>Neat Image:
>>>>>>>You can download a free stand-alone version (not a plug-in) which works
>>>>>>>very well -in fact it works so well I decided to buy the Neat Image Pro
>>>>>>>version, which also runs as a plug-in.
>>>>>>>Now the problems start - there are so many sliders and options that you
>>>>>>>need to practice for a couple of weeks before you find out exactly what
>>>>>>>they do, and how they affect your image. The effects can be quite
>>>>>>>spectacular when you get the settings right!
>>>>>>>
>>>>>>>Bille Xavier F. wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>Helle Gentlemen.
>>>>>>>>
>>>>>>>>I just bought a "old" digital camera, P&S olympus. In fact, I believe
>>>>>>>>it is
>>>>>>>>enough for my needs so far.
>>>>>>>>
>>>>>>>>Obviously it is not matching the Panasonic with a Leica 12x lens but
>>>>>>>>enough
>>>>>>>>to do most of the daily internet photos I need.
>>>>>>>>
>>>>>>>>Here is an example, using the right white balance on a cloudy day,
>>>>>>>>macro:
>>>>>>>>
>>>>>>>>http://xavierf.b.free.fr/Temp/PB130001b.jpg
>>>>>>>>
>>>>>>>>It is a "good enough" camera: subject is the Agfa Isolette II shutter
>>>>>>>>(do
>>>>>>>>you see the spots on the coating?)
>>>>>>>>
>>>>>>>>Sorry for being off topic here but I truly believe in the "Bridge" type
>>>>>>>>of
>>>>>>>>cameras rather than the Reflexes. So far, I've read in the local
>>>>>>>>magazines
>>>>>>>>ant i's been confirmed by the local photog that a lens can be a real
>>>>>>>>dog on
>>>>>>>>a digicam while on another it becomes good.
>>>>>>>>
>>>>>>>>All depends on the sensor and the post processing.
>>>>>>>>
>>>>>>>>So, I hope the DMR has enough software to use the Rom contact and decide
>>>>>>>>which profile is best.
>>>>>>>>
>>>>>>>>Alas, the DMR is to heavy for my flat purse...
>>>>>>>>---------------------------------
>>>>>>>>Xavier F. BILLE
>>>>>>>>Maisons-Alfort - France.
>>>>>>>>
>>>>>>>>
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>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
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>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
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>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
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