Yoshizen's Blog

Slide Dupe by D810 HDR

Since many of my old films came out of boxes, I tried to make some digital dupe of them.

The main reason why I bought canon 5D Mk-III was that it has HDR (High Dynamic Range) built-in. —– (Though, it turned out to be unusable unless it was processed in PC with their DPP program. ( PS : It was the result of first test, hence I’ve given-up to use though, I tested again further and I found that it works in the most of the subjects = so, fair to say it was NOT unusable = some of the lighting condition and a combination of the lens may show unsatisfactory result. )   In contrast, Nikon D810 seems to be a bit subtle but it is quite useful as the camera alone gives processed image on the spot.  (Even hand-held shot, if the exposure difference was within 3 stops, it works reasonably — not perfect though, don’t ask too much = effect is somewhat similar to put a big reflector to brighten-up the shadow.)

D800-HDR Dupe(1)424-001

———- (Photo Left :  Straight Copy.      Photo Centre :  with HDR.      Photo Right :  HDR and + 1/3

———- Which one to choose would be depending on one’s tastes ? )    ( St. German-de-Pre, in Paris)

So, the sample photos here are the Digital Copy of the Film slide.  The Originals were the Kodachrome ISO 25 film.  (Almost  40 years old.)

Copy Camera was Nikon D810 with Micro Nikkor 50 mm, and using their HDR setting.

D800-HDR Dupe(2) 423-001What ever a way when Copy was made,  whether by film or Digital means,  the range of the tones would be lost and became higher contrast. 

Photo Left : This was a straight Copy and the Right : was with HDR.

(Original Dynamic Range of the Kodachrome was squeezed into narrower range, hence lost its original sparkle = photo looks dull now) —– Mind you, the  original Kodachrome 25 has the detailed tone in its highlight and in the shadow as well. = Otherwise, where the details on Music Score came from. —– (Camera couldn’t create, if no image was there.)  😀

Dupe_5D_Flash(B)A09A0460-001—– In this extent, the resolution of Digital Camera may surpassed the resolution of such as  Ektachrome film though, the Dynamic Range of the Kodachrome yet. 

= With the use of HDR, they may just come closer to emulate the film.


(This Dupe was made using Flash-light and Canon 5D Mk-III without HDR, and the photo was brighten-up a bit on after tinkering process.  —– not much difference to above HDR photo.)

[]  There is a funny misunderstanding among the people  —– People has been fooled by a word / technical term such as “Number of BIT” = To express color depth by 8 bit or 12 bit etc. those number is an indicator of “How finely divided” (Say, 2 bit mean Black or White.  8 bit mean, the staircase of darkest Black to brightest White was divided into 256 steps, that all).  

From darkest to the brightest, how many times (in exponential scale) brighter is the Dynamic Range or in old term, Latitude. 

The B/W film was known to have a Latitude of 7 stops  ( = in metaphor, a grey become Black on F 22 but if the aperture was open 7 stops to F 2 the same grey will be captured as white.)  And the Color films and TV Cameras got only 5 stops of Latitude. (That’s why TV needs many lights.)

Even after the digital revolution, the situation hasn’t been changed much, since there is NO such things like a digital sensor = the sensors and the display units are all in analogue. !   All due to the limitation of those electronic components.  

(You know, the darkest black you can see on the screen is the darkness when you switch off your device. —– Is it dark ?  😀 )

(Usable linear part of their character is limited by such as quantum mechanics. ) 

[]The most of ignorant photographer who “worship” Raw File is believing it has more though, it is like a 1′ scale and a 30 cm scale.  Metric scale looks divided finer than inch scale, Raw is a bit finer that’s all.  Lossless JPEG compression wouldn’t make so much difference to Raw.

Raw doesn’t have extended Black outside of  30 cm or White on top.  

The total length is still the same.

[]The wide coverage of  the ISO setting in a DSLR was achieved by the higher amplification of the output from the censor = if the sensor was designed for low-light,  the highest output under bright light was also lower.  = Because, the sensor has almost the same latitude or dynamic range.  I wonder, if any DSLR which has 2 stops more Dynamic Range come to the market ?  

(Of cause with one exposure.   I don’t mind if it got digital signal process built-in for this purpose.  —– Or are they expecting the people resort with after process ? —– ( PS : Some information educated me.  Now such as Panasonic’s Lumix camera and their image processing program is even correcting the aberration of the lens = It is really the electronic company’s answer to the optical problem = not by the optical design but by their own trick = electronics !  )



6 Responses

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  1. Lemony (Gr)Egghead said, on August 25, 2013 at 17:03

    I realize they are separate shots, but I’m fascinated by the opening three images combined together as they are. It’s visually very interesting.

    • yoshizen said, on August 25, 2013 at 17:29

      Oh, Lemony, top three were all copied from one original.
      I’ve shown the differences if HDR was used on
      copy work. (It’s my English 😀 )

      • Lemony (Gr)Egghead said, on August 25, 2013 at 17:30

        Oh, I understood! What I meant was that they are very interesting to see all together as one image (even though they were not intended that way).

        • yoshizen said, on August 25, 2013 at 18:03

          How about to make a collage of 12 photos in flower petals’ shape
          and put round stained-glass window in the center. 🙂

  2. […] see the comparison in this post.)  To be fair, this matter needs to have more critical […]

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