PorscheDoc

PorscheDoc

Lives in United States City, United States
Works as a Doctor
Joined on Sep 3, 2010

Comments

Total: 84, showing: 1 – 20
« First‹ Previous12345Next ›Last »
In reply to:

boarderphreak: Tokina... Now there's a company that comes to mind when I'm thinking "high-end lens." 🙄

It wasn’t that long ago when Sigma was in the same category. I remember when Sigma lens elements were held in place with double-sided sticky tape. I had the front elements fall out into my hands because of this method of construction.

Link | Posted on Feb 28, 2018 at 17:10 UTC
On article Fujifilm X-H1 Review (1596 comments in total)
In reply to:

BeaverTerror: Hopefully the XT-3 will inherit the in body stabilization, for those people who don't shoot video.

@QScientist: If their IBIS is 'vastly more advanced...', why didn't Fuji put in a sensor-shift high resolution mode like their competitors (Olympus, Panasonic, Sony, Pentax, even Hassleblad)?

Link | Posted on Feb 23, 2018 at 17:33 UTC
In reply to:

LessMirrored19: I'm sure the next iteration of Sony pro mirrorless will surpassed DSLRs in AF tracking ... Mirrorless is already matching DSLRs in AF covfefe , AF capabilities , AF features
The mirror hurt the AF a lot

Only problem with a Sony is that you will have to wait for the buffer to clear (30-60 sec), Until then the camera is locked up (no changing settings, starting a new burst, chimping, etc).

Link | Posted on Sep 29, 2017 at 19:31 UTC
On article Hands-on with the Sony Cyber-shot DSC-RX10 IV (320 comments in total)
In reply to:

MedicineMan999: We knew this day was coming! Now Sony will absolutely rule the bridge market. I realized one day shooting hummingbirds in flight with my RX100v that it was just a matter of time before its sensor and AF/AF-tracking made it into the RX10 series.
As an owner of an a9 I can't wait to add the RX10iv to my kit.

It does not AF track that well (see 2:50 min of video https://www.youtube.com/watch?v=nU8F0IUGHRM&list=PLwIVS3_dKVpsjSZrQ7H-Nw8GQ7ZuDYyaD )

Another problem: it takes a >minute to clear the buffer; during this time the camera is locked (3:10 min of video). I have the same problem with the A7m2 [>15 sec for buffer clearance with raw files (why no lossless compressed raw?)]. Why didn't Sony engineers put in at least an UHS-II slot (or better yet a XQD)?

Link | Posted on Sep 27, 2017 at 15:45 UTC
In reply to:

Nicolas Alexander Otto: Amazing shots. I'd love to get these as wallpapers. ;)

Wallpapers are available at
https://www.jpl.nasa.gov/spaceimages/searchwp.php?category=saturn

Link | Posted on Sep 17, 2017 at 02:37 UTC
On article Nikon D850: What we hoped for – and what we got (404 comments in total)
In reply to:

robspeed750: No Dual Pixel AF in live view = deal breaker. I love the videos that come out of my D750 but only when I carefully pre-focus and leave AF off. I bought a little (NOT cheap) Sony camcorder to take any video that involves spontaneous movement.

Only Canon has dual pixel AF in their DSLRs, BUT they deliberately cripple their video features. No 4K except crop-mode in 5DM4; even here Canon limits the video output to motion jpeg: total cr*p. Deal breaker,

Link | Posted on Aug 27, 2017 at 00:18 UTC

Thom Hogan has just published his analysis of this rumor (http://www.dslrbodies.com/newsviews/nikon-isnt-being-bought-by.html). Sentaku mixed up Nikon lithography business with its photography business. Its the former that is dragging Nikon down and needs to be jetisoned. Sentaku is just another rumor tabloid/rag that relies small bits of 'facts' to get views (click bait).

Link | Posted on Jun 12, 2017 at 23:13 UTC as 2nd comment

This rumor is total garbage. It appears to be based an unknown japanese blogger with the online name ayaya030915. The translation of the article is completely wrong (see https://nikonrumors.com/2017/06/06/about-that-fuji-helping-nikon-rumor.aspx/ ).

Dpreview should check their facts before reposting fake news.

Link | Posted on Jun 7, 2017 at 01:25 UTC as 13th comment | 6 replies
On article New Sony a9 firmware fixes overheating warning (84 comments in total)

As of 13:20 EDT, the firmware update has been removed from the Sony site.

Link | Posted on Jun 6, 2017 at 17:26 UTC as 19th comment

I will holdout for the Au versions.

Link | Posted on May 31, 2017 at 17:53 UTC as 9th comment
In reply to:

Prairie Pal: Released just to keep Thom Hogan off their backs. ;/
But seriously I think this is a welcomed lens, given the VR.
At Cdn$450 I'm not expecting spectacular IQ, but we may be surprised.
I agree with another comment that it's a great alternative to the Olympus 9-18 in that it may keep the APS-C wide angle kit compact enough for a lot of people to keep their stake in Nikon ground.

Thom is still on their backs: this cheapy appeals to the D3xxx crowd. Where are the pro-level UWA DX lenses?

Link | Posted on May 31, 2017 at 17:32 UTC
On article Looking back: Canon's eye-controlled focus (232 comments in total)

It worked well on my A2E and EOS-3. Use of the latter was limited due to the loud shutter and motor drive noise. With every shot you announce to the world that you just took a picture. It makes the Sony A7R seem quiet in comparison. When I did not need autofocus, I reverted to using my trusty Nikon F3 with microprisim screens (G, H, F).

Link | Posted on May 11, 2017 at 18:33 UTC as 94th comment
On article Sony a9 Full Review: Mirrorless Redefined (2740 comments in total)

Interesting specs, but how long does it take to clear the buffer. I have heard anywhere from 36 seconds (Tony N.) to 3 minutes.

Link | Posted on May 4, 2017 at 21:43 UTC as 304th comment | 2 replies
In reply to:

Old Cameras: You can see the moon as well to the left if you look closely.

The moon is the faint dot to the left of earth in this pucture:
https://www.nasa.gov/feature/jpl/nasa-image-shows-earth-between-the-rings-of-saturn

https://photojournal.jpl.nasa.gov/figures/PIA21445_fig1.jpg

Link | Posted on Apr 22, 2017 at 19:56 UTC
On article Zeiss formally announces Batis 135mm F2.8 (183 comments in total)

I am sure that the IQ will be very high, but at $2k for a f/2.8 lens, I will wait to see how it compares to the Sigma 135 f/1.8 Art. I use multiple systems and routinely adapt Canon and Nikon lens to Sony E/FE.

Link | Posted on Apr 5, 2017 at 18:04 UTC as 39th comment | 4 replies
On article Gear of the Year 2016 - Barney's choice: Nikon D500 (217 comments in total)
In reply to:

Mister Joseph: Can the Sigma 18-35/1.8 AF motor keep up with this D500 AF beast?

It cannot keep up even with a static subject except in the center (maybe after calibration). Forget about using any off-center AF points (see response below and links),

Link | Posted on Dec 19, 2016 at 20:40 UTC
On article Gear of the Year 2016 - Barney's choice: Nikon D500 (217 comments in total)
In reply to:

CheddarMonkey: Tempting camera indeed. But what lenses should one get? One could use FF lenses for wildlife, but there don't seem to be great DX lenses for wide/everyday focal lengths (where ff lenses would be at a disadvantage). Anyone else struggling with this?

@paulski66: the problem with the Sigma 18-35mm Art is that is cannot focus accurately except at the center AF points. The Sigma dock only calibrates the center AF point. Accurate AF requires liveview, but who uses that for fast action work? It is a shame as this lens would have been ideal with the D500.
References:
https://www.dpreview.com/forums/post/57909267
http://nikongear.net/revival/index.php/topic,3754.0.html
http://www.pentaxforums.com/articles/review-news/sigma-18-35mm-autofocus-a-second-look.html

Link | Posted on Dec 19, 2016 at 18:02 UTC
In reply to:

rfsIII: I feel bad for the car dealers in Seattle; judging from the galleries, no one has bought a new car up there since 1975. It's like Havana except with Volvos and Volkswagen instead of Fords and Chevies.

There is a picture of a mid-1980's Toyota MR2.

Link | Posted on Dec 9, 2016 at 16:47 UTC
In reply to:

rugosa: No pretty ladies or cute cat shots ? How am I supposed to judge the quality of this camera ?

There is a dog picture and one cat at #30.

Link | Posted on Dec 9, 2016 at 16:43 UTC
On article Lensrentals tears down the Nikon 105mm F1.4 (157 comments in total)
In reply to:

Favorable Exponynt: So there are gears. They implied it was a ring type, so they lied. Gears can break. Especially plastic ones. Somebody should have them examined to determine whether the lens has a built in technical life span.

At least the AF motor assembly is securely anchored, unlike the Sony "Zeiss" FE 55mm f/1.8. The Zony AF and focus-by-wire motor is just glued to a flat surface and prone to failure (Cicala's 'Linear EM Type 1' motor; see https://www.lensrentals.com/blog/2016/04/a-look-at-electromagnetic-focusing/ ). Once the blob of glue fails, the lens is unusable and cannot, or will not be repaired by Sony's outsourced repair centers.

Link | Posted on Dec 3, 2016 at 19:45 UTC
Total: 84, showing: 1 – 20
« First‹ Previous12345Next ›Last »