Tom Schum

Tom Schum

Lives in United States Washington DC area, AK, United States
Works as a Electronics
Joined on Aug 30, 2010
About me:

Photo hobbyist

Comments

Total: 47, showing: 1 – 20
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In reply to:

sierranvin: This is precious info, and I'll be selling all my Sony gear and Zeiss lenses, esp. the Otus, so I can get Cannon for my cat photography work!

Cats deserve the best, of course.

Link | Posted on Dec 28, 2016 at 22:17 UTC
On photo sized__DSC3062-2 in ijsvogel's photo gallery (1 comment in total)

This is a spectacular shot! What was the original width in pixels before you downsized?

Link | Posted on Dec 11, 2016 at 14:31 UTC as 1st comment
On article DPReview Asks: What was your first camera? (764 comments in total)
In reply to:

Tom Schum: 35mm rangefinder, Minolta Hi-Matic 9, 1968 vintage, bought new. Still available on the web, can be shot entirely manually without a battery, or use hearing aid zinc-air cell.

The Hi-Matic 9 was the same: the battery powered the light meter only. The camera would set either the shutter speed or the aperture automatically and if the battery was OK it worked great. When the battery fails at the end of its life, the shots get overexposed.

Link | Posted on Nov 5, 2016 at 14:40 UTC
On article DPReview Asks: What was your first camera? (764 comments in total)

35mm rangefinder, Minolta Hi-Matic 9, 1968 vintage, bought new. Still available on the web, can be shot entirely manually without a battery, or use hearing aid zinc-air cell.

Link | Posted on Nov 4, 2016 at 23:51 UTC as 303rd comment | 2 replies
In reply to:

Tom Schum: The in-lens shutter is the wave of the future. Otherwise, a large focal plane shutter flapping around in front of a large high resolution sensor causes constant problems.
Sigma has a good idea to put a dust protector filter at the point where the lens attaches to the camera, except they still use the dust and oil-splatter producing focal plane shutter. But they're not doing large sensors either.
My guess is the Fuji medium format mirrorless product will be plagued by shutter-dust and oil-splatter problems.
Nobody other than the medium format guys wants to do in-lens shutters. Too much of a leap.
Now, if I could just get the Hassy for $1500 or less....

Leaf shutters in non-interchangeable lens cameras are pretty normal. The exception is the leaf shutter in an interchangeable lens camera. It doesn't seem like much of a leap to take such a lens out of a non-interchangeable lens camera and make it interchangeable. Shutter controls might be lacking in current lens mounts due to almost universal use of focal plane shutters. The lens mount might have to be enhanced with a couple more contacts (although the Hassy has only 9). The advantage is eliminating dust worries and of course no shutter shock.

Link | Posted on Sep 30, 2016 at 12:50 UTC

The in-lens shutter is the wave of the future. Otherwise, a large focal plane shutter flapping around in front of a large high resolution sensor causes constant problems.
Sigma has a good idea to put a dust protector filter at the point where the lens attaches to the camera, except they still use the dust and oil-splatter producing focal plane shutter. But they're not doing large sensors either.
My guess is the Fuji medium format mirrorless product will be plagued by shutter-dust and oil-splatter problems.
Nobody other than the medium format guys wants to do in-lens shutters. Too much of a leap.
Now, if I could just get the Hassy for $1500 or less....

Link | Posted on Sep 28, 2016 at 13:04 UTC as 37th comment | 5 replies
On article Video: Photokina 2016 wrap-up (152 comments in total)

Pretty good overview of the show, thanks for keeping it light but not too light.
Will we see a Sony trying to compete with Fuji and Hasselblad in the large format market?

Link | Posted on Sep 27, 2016 at 13:20 UTC as 49th comment | 4 replies
In reply to:

Emadn13: one of the worst focals,come on samyang give us your magic the 85mm

The lens is a Samyang 85mm F1.4 in the Fuji X-mount version. I checked and it is not F1.2.

Link | Posted on Aug 7, 2016 at 00:41 UTC
In reply to:

Emadn13: one of the worst focals,come on samyang give us your magic the 85mm

i have the 85mm F1.4 for Fuji X. It's excellent!

Link | Posted on Aug 1, 2016 at 23:41 UTC
On article 2016 Roundup: $1200-2000 ILCs part 1 - Crop-Sensor (387 comments in total)

If you drop the low end to $1000, you can (and probably should, in my opinion) include the Sony A6300. I see now it was included in a recent roundup of cameras in the $800-1200 range. Oops!

Link | Posted on Jun 8, 2016 at 14:17 UTC as 71st comment | 9 replies

It's good to see a new lens of this type that is not simply a copy of Lomo's Petzval.
There must be another ten legacy lens designs nearly lost in the dustbins, and this particular one seems very worthy of a modern refresh!

Link | Posted on Apr 15, 2016 at 16:28 UTC as 12th comment
On article Swirly bokeh: Lensbaby announces Twist 60 lens (122 comments in total)
In reply to:

Marty4650: I think I finally understand how this works.

If a lens really does a bad job at anything..... flare, blur, aberrations, etc... then it becomes a highly desirable "creative tool." And someone will prize it for these characteristics.

And if the original bad lens can be had on ebay for $20, then someone will come along and create a new version of it for $300.

I give Lensbaby a lot of credit for finding this product niche, and milking it for everything it is worth. Seriously, this is capitalism at its finest.

To me it looks like Lensbaby has simply copied Lomo on this one, minus the Lomo exchangeable aperture plates.
I wonder why, when there are hundreds of vintage lens designs, they had to copy Lomo.

Link | Posted on Apr 14, 2016 at 00:18 UTC
On article Seriously sharp: Sony FE 85mm F1.4 GM samples (257 comments in total)
In reply to:

jkrumm: Looks like it would come in handy for a dermatologist, especially combined with the A7RII.

I was thinking dentist, for remote dental exams on whoever might be the latest celebrity.
Looks like Sony has the world's best lenses now.

Link | Posted on Mar 10, 2016 at 17:23 UTC
On article CP+ 2016: Things we found that had been cut in half (136 comments in total)

Your Sigma lenses should have held together better.

Link | Posted on Feb 29, 2016 at 17:39 UTC as 22nd comment
In reply to:

ZhanMInG12: The ergonomics is quite inexplicable. The EVF is not only not on center but also not in a place where either eye can use it comfortably. And if you're not going with an articulate screen anyways, why not put the iso button on the screen's right side? And then there's the bottom...

But I suppose this is Sigma, and they have a tradition of weird designs. I'd buy it - if it came in E-mount.

Looks like the SD1 grip is living on, in the new cameras. Personally I like the Quattro design, but that SD1 grip was perfect for me and I can't forget it.

Link | Posted on Feb 24, 2016 at 03:53 UTC
In reply to:

Marc Ramirez: I like the design. Battery grip looks cool too. It should really have different mounts, m43, E, etc. Especially since sigma is now in the adapter game.

Maybe this is going to give them enough time to come up with a really good shallow mirrorless mount, in the next couple years.

Link | Posted on Feb 24, 2016 at 03:41 UTC
In reply to:

Mssimo: The biggest issue with sigma is support for RAW files. Last time I used sigma RAW converter it was a nightmare. Crashing, taking 15 secs to refresh after making a simple exposure adjustment and so on. If they could only work with adobe or another company to get raw support in third-party software.

And it will most likely remain a niche because the sensor itself is profoundly different from any color filter array (CFA) alternative. This is a mathematical enigma, solved every time a Foveon camera takes an image. It is very intensive and will always run slowly compared to CFA, no matter how advanced the processors get.

Link | Posted on Feb 24, 2016 at 03:36 UTC
In reply to:

AkashRana: I never quiet understood Sigma SA-mount cameras, and their foveon sensors; which are presumed to be so great but i see no adopters for those sensors. Still bayer rocks the world

Foveon is a different animal. Most people won't like it. Hence the popularity of the iPhone 5 camera.

Link | Posted on Feb 24, 2016 at 03:31 UTC

I hope DPR will review at least one of these.

Link | Posted on Feb 24, 2016 at 03:06 UTC as 93rd comment | 1 reply
On article The long, difficult road to Pentax full-frame (609 comments in total)

Really well-written article with great legendary imagery!

Pentax might interest its existing medium format owners by offering adapters so their MF lenses can be used on the K-1, lenses such as
HD Pentax-D FA645 35mm F3.5 AL [IF].

While not cheap, these lenses could work very well on the K-1 and they are already in the Pentax product line.

Link | Posted on Feb 19, 2016 at 17:30 UTC as 99th comment | 3 replies
Total: 47, showing: 1 – 20
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