Jump to content

Chrissie

Members
  • Content Count

    212
  • Joined

  • Last visited

  • Days Won

    5

Chrissie last won the day on July 28

Chrissie had the most liked content!

About Chrissie

  • Rank
    Advanced Member

Profile Information

  • Gender
    Male
  • Location
    Switzerland

Recent Profile Visitors

322 profile views
  1. Chrissie

    SAL-70200G2 vs SEL70200GM

    I'm sorry, but I don't own that lens. I only have other, and only native sel lenses. From all I hear and read, everyone advises against using adapted lenses, if anyhow possible.
  2. Chrissie

    SAL-70200G2 vs SEL70200GM

    Of course you can. All else being equal, this way you can separate the influence of the body on a lens-body combination. It would indeed be foolish, to expect the same result for a lens if different bodies are used. For example: The A6000 has a sensor resolution of 24 MPix. Combined with the FE 85mm 1.8 (your example) you can realize 18 P-Mpix, which is about 75% of the resolution of the sensor itself. This is only an APS-C, btw.. The A7R has a sensor resolution of 36.4 MPix. Combined with the FE 85mm 1.8 (your example) you can realize 29 P-Mpix, which is about 80% of the resolution of the sensor itself. The a7Rii has a sensor resolution of 42 MPix. Combined with the FE 85mm 1.8 (your example) you can realize 40 P-Mpix, which is about 95% of the resolution of the sensor itself. If you consider Dxo's description of how those values are measured(!): one might conclude that the A7RII has a superior autofocus compared to the A7R, which is why it can exploit its sensor capabilities so much better, at 95% of sensor resolution compared to 80% for the A7R. So, using the same body and swapping lenses makes lenses comparable. Using the same lens and swapping bodies makes bodies comparable. This is how scientists work. Separating the influence of one parameter from the influences of other parameters. The principle behind this is "ceteris paribus", or "all else being equal". It has nothing to do with "believing" or "liking".
  3. Chrissie

    SAL-70200G2 vs SEL70200GM

    DXO exposes their complete methodology of how their tests are conducted. The same way for all lenses, which makes their results comparable. It appears, you don't believe in science at all. It's just like someone saying, that he doesn't believe in gravity. Good luck with that attitude.
  4. Chrissie

    Issues trying to update lens

    Iansky, this can be a little tricky, when updating on OSX. I do not know, which body you are using (my experience pertains to a9 only. And I'm also on OSX). But on OSX there may be a so-called "driver loader" necessary, depending on the version of your OSX: Maybe you want to re-read this page, if you haven't already done so: https://esupport.sony.com/US/p/swu-download.pl?mdl=SEL2470Z&upd_id=11173&os_group_id=3 Please report back if this solved your problem or not.
  5. I may have been close, but you are spot-on! 😉
  6. Do you possibly have manual focus enabled? In that mode, a magnified view is shown in the EVF first. You could also enable "focus peaking", which highlights the edges which are in focus, using white or red coloring. If you don't like that, use auto focus. This comes without magnified preview.
  7. Chrissie

    Peak Design Anchor Recall

    1st post and an eulogy on Peak Design. Sounds really convincing.
  8. Intended as a start of a collection of tips and tricks on this topic: If you have a mirrorless, exchangeable lens camera, then sooner or later you will likely be affected by this: dust (or worse) spots, specks or stains that become visible on your pictures. How to detect: well this part is easy. They become visible when reviewing pictures at or near full resolution on a computer screen. Typically as dark spots against an otherwise bright, or at least uniformly colored background. Are the particles on the sensor, or on the lens? this is not quite so easy to differentiate. And there may be cases when both components are affected. I typically exchange lenses first, in order to see if the problem is confined to one lens, and does not occur with the other. If the problem persists regardless of lens, then that's a strong indication that the problem sits on the sensor. If the problem only occurs with one lens and not with any other, then this is again a strong indication that the problem sits on this one lens. For instance, I identified a lens problem with my 100-400GM by mounting it to the body, setting it to aperture priority and setting the aperture to the smallest possible value (38), then aiming at a bright, cloudy sky: spots then became visible in a 5 o'clock position of the EVF. Up to this moment, the cause could have been the sensor, or the lens. But when I turned the zoom ring towards 400mm, the spots sort of moved a little towards the center, still at the 5 o'clock direction, and became more blurred. That's when I figured it was a lens related problem. What to do about it: of course, you can always resort to a professional cleaning service. But this is both costly and, at least in my case, time consuming. As I'll have to bring it in to the dealer who is situated a 45 minutes drive away and leave it there for a couple of days. Then later I'll have to pick it up again. So for me this is not a sustainable option, considering my typical usage pattern: which is mostly outdoors, hiking through the alps, and exchanging lenses quite frequently along the way. So, the risk is always with me. But I've had good results with these do-it-yourself cleaning swabs. And, against their expressed recommendation, I'm still on my first swab as I keep re-using it as long as it works well. What I've found out though is, that it's worth while to well lubricate the swab, before doing the cleaning. I'm saving on the swabs themselves, but am generous on the cleaning liquid. As far as the 100-400GM is concerned: the problem was in fact sitting on the rear end of the lens. And it was visible when using a good glass-glass magnifying glass when looking into the rear end at slightly varying angles and having really bright LED lights. (I'm 60 years old and my natural vision has deteriorated with age, so I' taking every help I can get hold of). Apparently there is a flat protective glass inside the rear end to keep dirt from getting really deep inside the lens. Well done, Sony! So I was able to use the same swab that's intended for sensor cleaning to also clean the rear end of the lens, too. Maybe your mileage varies, and maybe you'd like to share your experience, too.
  9. Chrissie

    Sony A7Rii Double Vision

    Interesting. This looks like an "interlacing" issue, where the recording is done "interlaced", i.e. in half-frames of the even scanlines (2, 4, 6, 8, ...), then uneven scanlines (1, 3, 5, 7, ...), and the screenshot puts it all back together again. Between the first half-frame (the one with the even scanlines) and the second half-frame (the one with the uneven scanlines) the motion within the video has continued, creating this "Ghostery" impression. The "double vision" effect in your screenshot is strongest where there is the most motion, i.e. the fingers of the person's right hand, and not visible at all where there was no motion, i.e. the candy on the tray. So, in short, this looks like the interlacing setting during recording does not match the interlacing setting during playback. Maybe this gives you a direction to do further research. Good luck.
  10. Chrissie

    GBear-1792-jpg.jpg

    Awesome moment! 8-) Great shot!
  11. Chrissie

    A7RIII - update

    Thanks, Scarlett, for this pointer. Obviously, both body and lens must play in harmony with each other. Other than updating to the latest firmware I didn't find any significant info in this video. Other, maybe, that moving "big amounts of glass" to achieve continuous focus is slower than having small amounts of glass to be moved around by the autofocus. The 100-400GM probably falling into the former category would make this a not so well suited lens for shooting fast moving birds (of prey) in flight. Not exactly what this combo was advertised for. I'm actually quite disappointed in this regard. 8-( And in the hopes that this does not drift too far off-topic: "Some focus modes are worse than others.": if the task is "Birds in Flight", I would expect AF-C to be the focus mode of choice.
  12. Chrissie

    A7RIII - update

    Are you referring to the body, or the lens? The reason why I'm asking is, that I'm having persistent autofocus issues with the same lens on an a9 body, when trying to shoot birds in flight. Both components are on the latest firmware.
  13. Chrissie

    Protesters 4

    1. as I said before: images like these do not show a "protest" with any remotely serious expectation of success. To achieve success would require RESISTANCE. 2. Are you going to open up a separate thread for each single photo of the same situation? After all, this is a forum that's dedicated to all aspects of Sony cameras, and not about political or social inclination.
  14. Chrissie

    Profils d'image

    As you may (or may not) have noticed, the majority of participants here do speak english. I'm afraid you are limiting yourself by posting in french.
  15. Chrissie

    Day and Night in Cambridge

    That's my favourite, too. Gave it (him) a comment and a "like" on the gallery page ...
×