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  • #31
    Hi,

    I noticed a wide choice of smiles, very helpful

    Jerry, I think that any review of 6 months old is actually not precise in our fast changing life.


    What actually is possible, is to see the timecode on DV Raptor screen. You can use this timecode, transferred by firewire, to do batch captures.
    Date code is used to make indexing. It is also transferred by firewire.

    In DV RAPTOR, run Raptor Navi, insert tape, and select automatic indexing. Choose normal speed. After 1 hour you'll get all your tape indexed by clips recorded between start/stop button pushes (date code value jump is used for this).
    Then, save index file and import it into Raptor video application in batch capture mode.
    Push Capture and you will get all these clips captured in separate files. The accuracy is one frame. It takes some time, because positioning of tape is done relatively slow.
    However, finally you get all clips on hard drive. Of course, you can edit the batch list to skip some files or modify their duration. Everything is done based on timecode and datecode recorded on tape while you shot video.

    There is a problem here - the timecode must be continuous. The empty tape does not contain timecode. If you make empty piece on tape between clips, the timecode starts from zero. I am not sure what happens in this situation with batch capture. Probably, you have to take care about it manually.

    It is possible in principle to make tapes with pre-recorded timecode from beginning to the end. In that case the timecode is not modified later. Actually I can do this in my typical shooting from beginning to the end of tape without any fast forward or backward moves.

    Returning to tape lifetime and the suggestion to use D8 as analog capture card.

    My typical shooting contains about 100 clips per 65 min (actual tape duration) tape. When I do batch capture and indexing, the tape is used multiple times in all possible transportation modes. So, single batch capture procedure is probably equivalent to 4-5 hours of plain recording/playback in terms of mechanics wear.
    Add here at least two (three is more realistic) hours of start/stop shooting, switching camcorder ON/OFF, loading tape, unloading tape inside camcorder, ... and multiply by two.
    Finally, you have up to 5 + 6 =11 hours camcorder mechanical wear per one hour of DV captured on PC.
    I assumed that "pulsed" operation is x2 worse than plain recording/playback.

    Finally, you have 2 hours per hour for analog captures, and 11 hours per hour for optical shooting.
    So, making one hour of digitized analog tape is equivalent to 15 minutes shooting/capturing video in terms of mechanics wear.

    You see that common 1-to-1 explanation of wear simply does not work.

    Note, all these explanations were given for DV camcorder, I did not mentioned what kind of DV was in use. It is because Raptor cannot distinguish between mini-dv and D8 - both work equally.

    Hope this is an answer about "mini-DV supremacy" in batch and other time code related operations.

    Chris,
    Your assumption that only the cost prevents many of us from using Canon XL1 or similar camcorder is reasonable. However, the weight/dimentsions and other circumstances are also important. To use camcorder in summer vacation trip, it MUST have reasonable weight and size for this particular task. I agree that mini-dv is better suitable for travelling, but the cost and availability of tapes makes it less convenient than D8.

    We have to take into account safety too. Not all countries are safe if you travel with very expensive camcorder. This is true all over Europe.

    The possibility to find your rented car with broken window and stolen camcorder becomes higher with Canon XL1, because it is more difficult to hide it well. Hiding large size camcorder in a car may also damage it easily. Carrying it always with yourself can be too difficult.
    Reasonable price/size/quality camcorder, such as small 1CCD mini-dv or D8, is better suited for me.

    So, we always have to choose appropriate device, taking into account all these considerations.


    Grigory

    Comment


    • #32
      Dr. Mordrid,

      Thank you for detailed analysis of lense quality.

      I'll let you know when I get my first defect on Digital8 tape. 4 months is not a time for this

      What is still unclear for me:
      How did you use camcorders in your tests. D8 camcorder in still playback discards one field, thus reducing vertical resolution by a factor of two. So, you have to capture and compare individual frames to see actual vertical resolution. I suppose horisontal resolution may also suffer because of field image interpolation over the frame in still mode.

      Yes, Sony D8 camcorders have some parts that came from Hi8 models. Lenses, for example.
      Your price comparison is correct, but for today, and for US. At the time I bought D8 in the end of March, the price difference was very much higher. All recent changes are due to Sony D8 intervention this spring (in Europe).
      Living in Russia, I am able to buy any PAL camcorder, but the price policy here is different from the US.
      We don't have developed postal order market, so we are always limited by direct buy. The prices behaviour is very often strange. We also have a lot of mind inertia here. So, the price of new low cost D8 camcorder starts from low values because the camcorder looks like ordinary Hi8, but the price of even low end mini-DV is kept high because all of them are looking as very modern high-end solutions.
      I talked with sales persons - in spring some of them even did not realized well what is the difference between Hi8 and D8 at all. So, the street price overhead was kept at low level for D8 and at higher percentage for mini-DV. I suppose this was (and remains) true in many countries.
      What was the result? The prices of new D8 models went down slowly, because they were well matched to the top of Hi8 domain. The prices of mini-DV went down fast because those who wanted better camcorder could easily buy compatible with Hi8 digital unit for less money. True high-end oriented buyers were searching for 3CCD devices and did not influence low end market prices.

      Being interested, I looked at D8 and mini-DV prices in EU this August.
      My "inspection" of Belgium, Holland, France, and Germany gave very similar results.
      D8 camcorders were cheaper than the cheapest mini-DV models.
      Furthermore, I found that my PAL camcorder has different optical system. Russian/Chinese (eastern PAL countries) version has x20 optical zoom and x18 digital, thus giving nice digit of 360x .
      EU model have 72x. I don't know what part is for optical subsystem, but assume that it is less than 20.
      I have also different numbers of CCD pixels in the manual and on Sony Europe site.

      So, Sony produces at least 3 different by optical path D8 camcorders. Your data for aberrations and resolution is valid for NTSC model. Other models may have different values. PAL models, for example, have better CCD in pixels.

      I do agree with the statement that D8 is at low end of DV market. However, it still has significantly better price/quality ratio than any Hi8 and mini-DV camcorder.

      The situation for me is similar to Celeron 300a (@464) and PIII 600 comparison: high price is not accompanied with acceptable for THAT price performance benefit.

      Reliability tests of D8 and tapes are still going all over the world, let us see the results.

      Grigory

      Comment


      • #33
        Grigory

        I like the catalogue of icons!

        I think the likelihood of theft is a total non-sequitur. Anyone who leaves any form of valuable visible in a locked car is simply asking for trouble, whether the camera is anything between a throw-away 35 mm type up to the most expensive DV. I have travelled with expensive photo/cine/video equipment since the 1950s through 24 of the contiguous States, virtually the whole of Western Europe, including France, Italy and the UK, all notoriously theft-prone, Cyprus, Israel, Tunisia, Egypt, Kenya, India (incl Mumbai, Bangalore and New Delhi!), Indonesia, Sarawak, Peninsular Malaysia, Singapore (14 times), Thailand, Vietnam, Hong Kong, Japan and probably elsewhere and never once (touch wood) have I had any equipment stolen. However, I am reasonably cautious. E.g. if I do have to leave equipment in the car, I make sure it is carefully locked away in the boot (trunk), out of sight. In any case, if you do lose it, you will lose either a D-8 or a DV: thieves are not sensible enough to leave the D-8 behind

        ------------------
        Brian (the terrible)

        Brian (the devil incarnate)

        Comment


        • #34
          I have a sony d8 and a firewire card and the combination is very good, the only problem is the disk space required for dv captures.

          ------------------
          DBK 99
          DBK 99

          Comment


          • #35
            Brian,

            My security idea came only from the necessity to put expensive and fragile device (and not too small in case of Canon XL1) in a back of hatchback car, already full with my baggage or anything else. The ability to damage camcorder becomes higher than in the case of D8 which I simply can take with me every time. Small mini-dv is even better for this.

            The other thing is that it may also be more pain to drop expensive device and make it broken.
            I am not so much careful person to take special care of dust, sand, and water.
            BTW, D8 unit worked well on North sea shore under wind, not so strong rain, and, of course, sand everywhere.
            Having already poor lense quality I expect it will stay in unchanged condition longer than perfect and expensive lenses.

            Grigory,

            the happy d8 user

            Comment


            • #36

              I hereby repost some of John Beale's views
              on the matter.
              For those of who not now of his website
              already I strongly encourage you to visit it.
              In my view the best website in the world
              about the Sony TRV900
              http://www.bealecorner.com/trv900/index.html

              Happy reading!!

              ----------------
              quote

              .....Then I tried a more stringent test:
              I made a 30-second video clip in Premiere
              incorporating two high-resolution still
              frames and wrote it va firewire from my PC
              to my TRV900 MiniDV camera. I read it back
              into the computer via firewire and extracted
              the two stills as BMP files, calling
              this "1st generation". I then copied that
              30-second segment on the tape from the
              TRV900 over firewire to the TR7000, giving
              me a second generation copy on Digital 8,
              and then back to the TRV900 for a 3rd generation on MiniDV, and back etc. up to
              the 9th generation (on the TRV900 at this
              point) which I then uploaded back to the PC
              again, and again extracted the two stills.
              They look identical. I did a binary file
              comparison on the 1st and 9th generation BMP
              files and they are bytewise identical -
              every single bit is the same. Looks like I
              had no tape dropouts along the way! So, my
              conclusion is that this works - the firewire
              transfer is actually lossless - and you can
              use the Digital8 models as an inexpensive
              digital VCR for editing purposes.

              unquote
              -------------------------

              Regards
              Eyvind
              eyvind@forum.dk

              Comment


              • #37
                Does anybody know if the Sony Digital 8
                camcorders... with the auto-shutoff
                feature mentioned by Doc... can be used
                as editing decks. In other words, when
                you switch the camcorder to VTR mode...
                is there a way to disable the auto-shutoff
                so that... using a DV Raptor... I could
                use the camcorder's codec to maintain
                my Overlay window?

                Comment


                • #38
                  Based on the link just posted...
                  (Thanks Iyvind--FANTASTIC WEB SITE!)

                  ...I would guess there's a way to
                  disable the auto-shutoff feature
                  of the Digital 8 camcorders.

                  [This message has been edited by Jerry Jones (edited 12 October 1999).]

                  Comment


                  • #39
                    Doc...

                    I think I'm swayed to the notion the
                    Digital 8 does have an advantage over
                    some one-chip MiniDV camcorders, namely,
                    the analog inputs.

                    When this discussion began... I didn't
                    realize Digital 8 camcorders **all**
                    have analog inputs... even the lowest
                    price models. That's a real advantage
                    where legacy analog footage is concerned.

                    But... I agree... the questions about
                    tape durability are valid.

                    It is encouraging, however, to hear about
                    Grigory's experiences to date.

                    I should point out that during my 11-year
                    stint in TV news, I remember many
                    internal discussions about tape formats.

                    We rejected Hi8 due to the very problems
                    Doc mentions... tape dropout... and we
                    adopted Betacam SP instead. I suppose Hi8
                    tape formulation has improved. But it's
                    still a question in my mind.

                    I think we can agree the optics of the
                    Digital 8 camcorders are going to be
                    on a par with the low end, one-chip MiniDV
                    but not on a par with those of the more
                    expensive 3-chip camcorders such as my
                    Sony DCR-VX1000.

                    What we need is enough time for some real
                    studies to be done to find out if MiniDV
                    does offer superior tape durability over time
                    than Digital 8.

                    Grigory/Pat... thanks for the confirmation
                    about the Digital 8 batch capture capability. Adam Wilt's Web site was based on very old, pre-product release information (his post suggests even digitally recorded D8 tapes may not be able to convey time code information over 1394--which is not accurate) and I simply posted it as a
                    means of getting my own questions about it
                    answered here. Thanks again.

                    Comment


                    • #40
                      I have seen the TRV103 sold brand new retail for $675.00 U.S. This model has the 2.5 LCD screen.

                      Regarding the dropout problem with HI8 tape, I have seen this alot as my brother has 2 Hi8 Sony cams. I have never had so much as a single glitch on any frame with my D8 camcorder. I am using Fuji MP120 tapes.

                      Of course time will tell how the bits will fare as the tapes deteriorate. But I *think* the error correction will overcome this. And common sense would suggest that using twice the tape per second would improve the prospects for data storage.

                      In the analog world, a wider tape has almost universally been associated with higher quality/capacity. Also in the analog world moving more tape per second results in higher quality. Could this not perhaps portend some potential for the D8 formats stability?

                      I am concerned about the possibility of flaking inside the camera. Does anyone know if the expense Evaporative tapes are subject to this? How about the good old cheap standard (not Hi) 8mm tapes, do they flake? If not, maybe we should use them in our D8s instead.

                      -Anthony
                      Anthony
                      • Slot 1 Celeron 400, Asus P2B, 256MB PC-100
                      • AGP Marvel-TV 8MB NTSC
                      • Turtle Beach Montego PCI sound card
                      • C: IBM 10.1, 5400, Primary on 1, System, Swap, Software
                      • D: IBM 13.5, 5400, Primary on 2, Dedicated to video
                      • E: Memorex 48x CD, Secondary on 1
                      • F: Yamaha CD-RW 2x2x8, Secondary on 2
                      • Win98, FAT32 on C: & D:
                      • MediaStudio Pro 5.2

                      Comment


                      • #41
                        Hi Doc,

                        I am curious about what you said previously:

                        "If you think you'll get rid of the 5 min. shutoff by buying a Sony cam, think again. Every Sony consumer grade cam I've had has that annoying "feature". So do many other cams. I agree: it's a royal PIA."

                        I have two Sony Hi-8 camcorders. They both have a 5 minute shutoff if you leave the camcorder in "Camera" mode with a tape inserted and paused. If you take the tape out, you can leave it run in "Camera" mode indefinitely. In "VTR" mode, there is no 5 minute shutoff at all.

                        I guess I'm just wondering what it is that you (and others) are talking about in terms of a 5 minute shutoff being a problem? Are you wanting to leave your camera on, with a tape inserted, in pause mode for long periods of time? This seems like a bad idea to me... I guess I must be missing something.

                        Rick
                        http://www.Hogans-Systems.com

                        Comment


                        • #42

                          Scrolling down this lengthening thread I've noticed a few things I'd like to comment on that Grigory hasn't yet analysed.

                          DV standard - It's a myth that DV is somehow a "standard". A quote from earlier in this thread:

                          "In the longer term DV will become the de-facto standard."

                          First of all, there are two completely different formats of DV, full size and MiniDV. And even within the full size DV camp, there are at least two versions which are NOT compatible.

                          Besides, let's hope in a couple of years that the "de-facto standard" is not tape based at all.

                          Auto shut-off - As Rick has already explained above, this is also NOT a problem with any Sony camcorder that I've ever used. My current Hi8 model is the CCD-V801. Auto shut-off is designed to prevent the tape and/or the heads from wearing excessively during extended use of the Pause function in either Camera or VTR mode. If the camcorder is in Camera mode with NO tape in it, the camcorder will stay on indefinitely. If the camcorder is in VTR mode and the tape is stopped (not paused), the camcorder will stay on indefinitely. This is while using the AC adaptor. I believe it operates the same even while using battery power, but I can't swear to it.

                          Dropouts - This has been the biggest complaint I've always had with Hi8. I've had a lot of experience dealing with this problem over the years, and I've never been convinced that it is simply a tape issue. As I've stated many times before at this forum, it seems that the tape path alignment is so critical with Hi8, and any variation from "perfection" results in the viewing of dropouts in the picture. This was never a problem to anywhere near the same degree with regular 8mm, and from all reports it is not a problem at all with Digital8.

                          Although I've just stated that the tapes themselves are probably not the main reason behind dropouts occurring, I would advise against the use of "evaporated" Hi8 tapes. They were designed to be used for initial high quality recording of gathered footage. They were not designed for the use and abuse of repeated playback and/or editing. The only way those tapes should be used is to record material once, dump it to a different format for editing, and then toss the tapes. They may have improved since they were first produced, but the Sony evaporated tapes were notorious for shedding huge amounts of formulation onto the camcorder heads. This is not, I repeat not, a problem with the metal particle tapes.

                          NTSC vs PAL camcorder models - One thing that has led to a lot of confusion and needless disagreement is the fact that there are different models available with different features in different parts of the world. And because this is definitely very much an international forum, we often are unaware of what each other are dealing with. For example, here in North America, all Digital8 camcorders come with:

                          1) Digital in and out (through i.LINK, firewire, IEEE-1394, whatever you want to call it).
                          2) Analog in and out (through composite and/or S-video).

                          If you consider that there are MiniDV camcorders available here in North America that do NOT even have an IEEE-1394 connector mounted on the camcorder, is it any wonder that so many of us have been pleased with Sony's release of Digital8? The fact that Digital8 camcorders also have mic inputs, headphone outputs, etc, all at a price usually much lower than a comparably featured MiniDV camcorder, well, what's not to like?

                          [This message has been edited by Patrick (edited 13 October 1999).]

                          Comment


                          • #43
                            Well, we can now see who owns D-8 and who owns DV by their often-emotional justification of their purchases.

                            ------------------
                            Brian (the terrible)

                            Brian (the devil incarnate)

                            Comment


                            • #44
                              Phil,

                              I have to disagree with you about the LCDs. I have the TRV103 which has the smallest LCD at 2.5". I never film without it. It has worked well in all conditions. It really gives you a lot of freedom of movement and better awareness of your surroundings than having your eye stuck in the little viewfinder cup.

                              With the InfoLithium batteries, I never worry about running out of juice using the LCD. If I go out of town I can tape over four hours + watch some of it in the evenings with the built in LCD & speaker and not have to charge the batteries at all. I have one additional battery besides the stock one.

                              You should consider getting a cam with an LCD next time, I think.

                              -Anthony
                              Anthony
                              • Slot 1 Celeron 400, Asus P2B, 256MB PC-100
                              • AGP Marvel-TV 8MB NTSC
                              • Turtle Beach Montego PCI sound card
                              • C: IBM 10.1, 5400, Primary on 1, System, Swap, Software
                              • D: IBM 13.5, 5400, Primary on 2, Dedicated to video
                              • E: Memorex 48x CD, Secondary on 1
                              • F: Yamaha CD-RW 2x2x8, Secondary on 2
                              • Win98, FAT32 on C: & D:
                              • MediaStudio Pro 5.2

                              Comment


                              • #45

                                I hope we don't start fighting about LCDs now!

                                Brian, if I'm one of the individuals that your last post was referring to, I don't own a D8 camcorder.........yet.

                                Comment

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