Georg R. Baumann
Inactive
Is anyone around here who uses the ALPA 12 TC with a SINAR emotion DB?
Is anyone around here who uses the ALPA 12 TC with a SINAR emotion DB?
Is anyone around here who uses the ALPA 12 TC with a SINAR emotion DB?
Merci Thierry!
May be a basic question that I always stumble across, what is the difference bewteen single shot and multishot systems?
If I understand that correct there is no price difference with the sinar DB.
I guess that would be the equivalent to the Bayer Pattern on my Olympus! Right?In reality, each pixels is fitted with a tiny little colour filter on top of it according to a special pattern:
This is roughly explained, but nevertheless and IMO understandable.
So in other words, if one wishes absolutely true and ultimate quality in digital, the multishot process is the only option giving this result, with the necessity however to shoot static and non-moving subjects.
Oh my God.
LOLOLOLOL I had NO IDEA!
I thought I was asking just a harmless little question that probably has an obvious answer attached.
Thank you so much for that in depth explanation Thierry! Outstanding!
Yes, it is the Bayer PatternI guess that would be the equivalent to the Bayer Pattern on my Olympus! Right?
We have a contractual 2-year warranty period for all products, included digital backs PLUS an additional FREE 1-year warranty as soon one registers the product in our SOG (Sinar Owners' Group), which is done in 1 minute and foc. So totally a 3-year warranty. We guaranty as well repairs and service to our products for 10 years after their discontinuation.What is sinars policy on warranty of such sophisticated backs? How many years are standard? Can that be extended for a additional fee?
This is dealt with by our distributors. Certainly there is the availability of service/back-up unitsIs there something in place to cover the owner in case it has to be send in for repair for a longer time, can he get a substitute if he has to complete work, urgent assignments etc.? If so, at what costs?
Yes, I was!Roughly explained? You gotta be kiddin me!
Thanks!Seriously, very understandable in deed!
We have to go for a few Koelsch when we meet in Cologne, I owe you one! Hope you can make time then. Have you ever been in "Die Malzmuehle"? Best beer in town, well 15 years ago that was, and hearty food! I am sure they are still around.
Prices can (do) vary from one country to another. But basically, the Sinarback eMotion 75 single shot (33 MPx) has the same price as the eVolution 75H multishot (33 MPx).P.S. Was it correct to say there is no price difference in single or multishot for sinar backs? - I think I read that somewhere on another forum. -
Just out of curiousity, I understand this was developed for studio/product applications mainly, however, do you know by any chance whether some landscape shots exist that were taken with a multishot? The odd totally windstill day, lake, reflections, something like this. I imagine this to be possible and would love to see such results! I saw a shot made from a nautilus on a HP presentation that was made with Sinar, I could not take my eyes of it, such an excellent execution, this picture was just outstanding! Now I wonder whether this was a multishot perhaps.
There have been landscapes taken with multishot backs. In the early stages of digital I did even take a landscape with a Dicomed scanner and about 20 minutes exposure.
The sensitivities that can be set on the Sinarback eMotion range from ISO 25 to ISO 800
depending on the model.
When formatting the internal memory of the Sinarback eMotion the reference data
that are saved on the Sinarback will be deleted. This reference data, however, can be
recalled from the reference CD that is delivered with the digital back.
Sorry, they are all with my colleague whom with I did the shots, and I've lost contact with him! But you can believe me, they where astonishingly detailledWOW, can you post that 20 minute scan and the multishot pictures Thierry? ...
Yes, warranty is worldwide and covers parts and labour, under the normal circumstances (no wrongdoing by the customer).3 years cover and 10 years repairs and parts is reassuring, however, the operating instructions do not state the type of warranty, may be it is in terms and conditions, does it cover 3 years parts and labour globally, regardless where the back was purchased? Say I purchased it in Asia, and need service in europe, I would expect that not to be a problem.
The combined operating instructions (rev00- 5.2.2008) for the 54LV/75 and 75LV state a few things that trigger questions:
What are the steps up from ISO25, and most of all, which model can operate ISO 25?
See my explanation aboveThe technical data at the end of the document states ISO 50-400 for the 54LV and ISO 100-800 for the 75/75LV. The operating instructions for the eVolution 75h also speaks of ISO 50-400. No mention of ISO 25.
The centerfold issue is something rather long to explain, and would need at least an explanation as long as the one about multishot! But I will skip this one and try to make it short!What does this reference data refer to?
Scouting the Internet to learn more about it I read on the Alpa site that the Kodak chips are supposed to be more prone to color cast than the Dalsa, however the Dalsa would be more prone to "centerfold". I understand that there are special software tools available to compensate/deal with it, but what on earth is centerfold?
Thierry,
Could it be possible to follow the Foveon sensor path for Sinar ? Then all backs would be single shot ?
Michel
Hi Thierry,
A very good explanation of a complicated method of overcoming what on the face of it, is a simple problem.
So, if, the exposure is calculated as say 1/200 second, how long does it take for the four or 16 shots to to made, and possibly the in camera processing/buffer size? Does the time vary much in relationship to the shutter speed? If you have mentioned it before, I'm sorry if I missed it. The technique is sort of the reverse of image stabilisation, maybe micro stitching.
Some interesting 'sums' needed, since I guess the photo sites are not on a rectangular grid.
The raw file that is output, is it possible to get each image for each position from that, or are they completely added together (thinking if something moving relatively fast, could you get the movement as separate frames.)
Best wishes,
Ray
Hi Thierry,
Thanks for the answer. I was thinking that if the total full exposure time, or whatever you call the multishot mode time from start to finish, was short then for landscape work, out of doors, if each shot can be at a fast aperture, then the total exposure time may not be much different than a few years ago when slower films were used (a few years may equal 100 ;-)
So, keeping to simple figures, assuming an exposure which takes 1/100 sec - we need four, so total time for object to be stationary is (4 * 0.01) + (3 * m) seconds (where m is some memory writing function, or similar, necessary between each shot). If m is 1 second, then the total exposure time is 3.04 seconds, that being the time that the subject needs to be relatively stationary. It seems that m is about a second, based on your reply, and I'm thinking that in many situations, it is quite usable, in the same manner as the early film landscape photographers had to use the T or B setting (or simply removed a lens cap and counted), although I suspect that the softer lenses of the day and other factors masked some of the motion blur.
I would imagine that microstepping tests the resolving power of the lens.
Best wishes,
Ray