Giulio Scorio interview (and third party E-M5 battery test).

21 Responses

1. Nice interview. Have been musing this morning on the nature of “natural” bokeh etc, relating to sensor size. Anyone know what the sensor size of our eye is?

   Reply

   1. from wikipedia:”Dimensions
      The dimensions differ among adults by only one or two millimeters. The vertical measure, generally less than the horizontal distance, is about 24 mm among adults, at birth about 16–17 mm. (about 0.65 inch) The eyeball grows rapidly, increasing to 22.5–23 mm (approx. 0.89 in) by the age of three years. From then to age 13, the eye attains its full size. The volume is 6.5 ml (0.4 cu. in.) and the weight is 7.5 g (0.25 oz.)”

      but here is something interesting:
      ” The retina has a static contrast ratio of around 100:1 (about 6.5 f-stops). As soon as the eye moves (saccades) it re-adjusts its exposure both chemically and geometrically by adjusting the iris which regulates the size of the pupil. Initial dark adaptation takes place in approximately four seconds of profound, uninterrupted darkness; full adaptation through adjustments in retinal chemistry (the Purkinje effect) are mostly complete in thirty minutes. Hence, a dynamic contrast ratio of about 1,000,000:1 (about 20 f-stops) is possible.[4] The process is nonlinear and multifaceted, so an interruption by light merely starts the adaptation process over again. Full adaptation is dependent on good blood flow; thus dark adaptation may be hampered by poor circulation, and vasoconstrictors like tobacco.

      The eye includes a lens not dissimilar to lenses found in optical instruments such as cameras and the same principles can be applied. The pupil of the human eye is its aperture; the iris is the diaphragm that serves as the aperture stop. Refraction in the cornea causes the effective aperture (the entrance pupil) to differ slightly from the physical pupil diameter. The entrance pupil is typically about 4 mm in diameter, although it can range from 2 mm (f/8.3) in a brightly lit place to 8 mm (f/2.1) in the dark. The latter value decreases slowly with age, older people’s eyes sometimes dilate to not more than 5-6mm.”

      Reply

2. A bit OFF, but would Olympus 45/1.8 owners tell to me whether it’s normal for te focus ring to have very slight but easily perceptible play along the LONGITUDINAL lens axis? The lens is brand new, I bought it 3 days ago.

   By the way, this wouldn’t be a real problem but I wonder why the oly 45/1.8 is claimed to have high build quality and even the cheapest panasonic lenses have no such loose assembled components at all.

   Reply

   1. Hi Kesztio. My copy also has the play. Never noticed it in use, but just checked. Not noticeable when rotating the ring. I think you worry too much….this isn’t claimed to be of the quality of the 12/2.0!
      Talking of the 12/2.0, it’s focus ring has about 8mm of back and forth play I think?!

      Reply

      1. Thanks a loooot! This was exactly the answer I expected, so now I don’t worry about it at all. Such a high optical quality for such a little money – this should be the only important thing regarding this lens.

         Reply

      2. Well, it does have a push/pull to toggle between manual and auto focusing.

         Not sure if that’s what you’re talking about?

         Reply

3. Anybody know if there are any batteries who supports the original charger out yet?

   Reply

   1. I do not understand why anybody would spend £1,000 on what looks to be an excellent camera and then put it (and the warranty?) at risk by buying cheap immitation batteries. It sounds like saving money on the lens by using a Coke bottle.

      Reply

      1. Your analogy isn’t correct because third parry battery can only have impact on battery life, and not the quality of photos.

         Reply

         1. Not only on the battery life, it could damage the eletronics.

            Reply

            1. Exactly what I said. The point about the Coke bottle was an analogy, not a suggestion that a third party battery could reduce picture quality. Although it could if it wrecked the electronics!

            2. So, when you purchase AAA rechargeable batteries make sure they are from the original manufacturer they might not work properly. Who was the original manufacturer of AAA rechargeable batteries?

               Talk about original manufacturer of batteries. Remember Sony laptop batteries.

            3. I am considering buying these lower spec’d batteries & charger from these suppliers (www.camera-battery.com.au) in Melbourne as they have $10,000 insurance for equipment damage.

            4. I couldn’t add the whole link in because it treats it as spam.
               This is their claim, “However when you purchase from us your device is protected by our $10,000 Damage Free Equipment Protection Guarantee*”

      2. Well as a counter example, I mark each battery when I buy it, and the BLM-1 battery that came with my E-3 seems to be drained much sooner compared to my third party batteries. Even the Lenmar batteries that I bought a year before I got the E-3 seem to hold more charge than the battery that came with the E-3. I haven’t done any tests, but I tend to think the Wasabi batteries that I got after getting the E-5 and which use the premium made in Japan cells, outlast the BLM-5 that came with the E-5.

         Note, I buy only established 3rd party battery brands, and recently have been buying only Wasabi batteries that bluenook.com offers, on the advice of other forum members, both here and at DPR.

         Reply

      3. One reason some of us have ordered those cheap imitation batteries is that the official Olympus battery is still fairly hard to obtain. Once I am able to get two or three extra Olympus batteries from my local dealer, I’ll relegate my off-brand ones to emergency backup duty.

         Reply

      4. Low voltage (from over-discharge) isn’t going to damage the electronics, but it can damage the batteries. Note that these batteries appear to be unprotected LiIon cells that can over-discharge. You can tell they’re unprotected by the higher capacity than the Olympus batteries.

         Reply

      5. My experience with 3rd part batteries has been flawless every time i have bought them, I would not be suprised if they are made at the same plant. The risk to the camera is minimal.

         Reply

4. Hey Admin, not that you have to cover it but do you have any juice rumours about the XZ-2 coming up? 🙂 You said it should be announced before Photokina, right? 🙂

   Reply

5. deleted

   Reply

6. for you guys who are curious about strip DSTEbattery for em5, you can open the link below, a Singaporean open and test the battery in a forum

   http://www.clubsnap.com/forums/four-thirds-standard-4-3-m43/1086996-omd-em5-spare-battery-get-3.html

   Reply