xpatUSA

xpatUSA

Lives in United States Bellville, TX, United States
Works as a Retired Engineer
Joined on Dec 15, 2011
About me:

Mostly interested in technology.

Comments

Total: 53, showing: 1 – 20
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On article What's the best way to describe sensor size? (598 comments in total)
In reply to:

solsang: To remember easily: Crop factor - to know amount of light: Sensor Area - to figure out print sizes: Length and Width

I have adviced people and compared cameras and lenses having to use what i could remember by heart, so crop factor has always been easiest, and i have not needed exact figures since sensor quality and type varies anyway.

Being able to know that apsc are around 1.5, m43 are 2, 1" are 3, fuji ⅔ are 4, big sensor small compacts are 5, normal compacts 6 and phones kind of 7 have given me a very easy and understandable idea of depth of field, amount of noise, lens weight and raw possibilities :)

"To remember easily: Crop factor - to know amount of light: Sensor Area - to figure out print sizes: Length and Width"

What ?!

Link | Posted on Jul 21, 2022 at 15:06 UTC
On article What's the best way to describe sensor size? (598 comments in total)
In reply to:

paul cool: what about multi aspect ratio sensors ,all manufacturers should make these to cover the image circle ,i prefer 4:3 for portrait ,but for landscapes i prefer 3:2 .

Panasonic GH1 does that by keeping the diagonal constant. :-D

Link | Posted on Jul 21, 2022 at 15:05 UTC
In reply to:

ChelseaPhotographer: All the talk that APS-C produces the same image quality as FF is just nonsense. Both systems have advantages and disadvantages, and one of the disadvantages of APS-C is that it simply cannot produce the same IQ as FF, as much as die-hard APS-C users would like to think. And one of the disadvantages of FF is that it is generally a bigger and more expensive system. That is unless you buy the expensive Fuji models which cost as much as full frame and can be bigger and heavier, and still produce inferior IQ...

Is there a comprehensive Standard for camera IQ - like there is for cell-phones?

https://www.imatest.com/solutions/cpiq/

If so, one could truly compare APS-C and FF sensors instead of just using vague terminology ....

Link | Posted on Jun 8, 2022 at 14:53 UTC

A bit like Sigma's "fp" becoming "FP" in posts, interesting how "L²" immediately became "L2" in the text following the quote, grump.

Ted.

Link | Posted on Jun 5, 2022 at 13:37 UTC as 12th comment | 1 reply
On photo Seven for Me, One for You……. in the Birthday challenge (5 comments in total)

Good one!

Link | Posted on Dec 22, 2021 at 14:31 UTC as 3rd comment
On photo 1949 Buick Sedanette (pre restoration) in the Car challenge (6 comments in total)

Love those bubble-shaped cars of that era ... some quite ugly. I owned a straight 6 '51 Chevy saloon for a while ... no good for bootleggin' I'd say ...

Link | Posted on Oct 13, 2021 at 20:47 UTC as 1st comment | 1 reply
On photo DP2M1717 in the Sigma - Specific Equipment Challenge challenge (1 comment in total)

Thanks for reminding me of visiting there long ago!

Link | Posted on Jul 16, 2021 at 13:07 UTC as 1st comment
In reply to:

Scottelly: I wouldn't buy anything from a company that doesn't know how to spell their own name.

... or spell their own model names, eh? ;-)

Link | Posted on May 25, 2021 at 17:42 UTC
On photo Wood Screw. in the Simple Machine(s) - Macro Challenge challenge (6 comments in total)

Especially nice with the flat-head screwdriver - so reminiscent of yesteryear.

Link | Posted on Mar 25, 2021 at 16:48 UTC as 1st comment
In reply to:

paulbysea: My first camera was a Praktica MTL3, which I bought in 1977, learnt a lot about how to use a camera and how to get the exposure right and how to focus manually. A big step was getting a 135 mm short telephoto lens. Remember the camera fondly but was very happy to upgrade once funds allowed.

+1.

Kept and used mine until the early '90s until I replaced it with a Kodak 643 point-and-shoot. Horrible little thing, quickly replaced by a Nikon DSLR ...

Link | Posted on Mar 22, 2021 at 14:04 UTC

"with the aim of intersecting the asteroid" ...

That would "intercepting" - pardon my pedantry. :)

Link | Posted on Oct 25, 2020 at 13:59 UTC as 7th comment
In reply to:

Morvegil: SO what's the advantage of a Foveon sensor?

oops - text deleted

Link | Posted on Aug 19, 2020 at 16:54 UTC
In reply to:

Scottelly: Adobe - don't install it.

Amen to that, Scott!

Link | Posted on Jul 25, 2020 at 16:44 UTC
In reply to:

Greg OH: The problem is financial hanky panky that has nothing to do with photography. Remember Enron? Olympus is the Japanese Enron.

I remember Enron well. I was working for Dynegy at the time, a fine energy company that got scuttled by the Enron debacle.

Link | Posted on Jun 25, 2020 at 13:08 UTC
On photo Wrong Way Rudolph in the santas and reindeer on the move challenge (4 comments in total)

Excellent. What a magic moment!

Link | Posted on Jan 7, 2020 at 17:25 UTC as 4th comment

That would be "Wetzlar", not "Wetzler" ...

Link | Posted on Dec 19, 2019 at 00:55 UTC as 21st comment
On photo Vulcan Duxford-4804 in the Aircraft challenge (14 comments in total)
In reply to:

xpatUSA: I worked on XH558 long ago at RAF Waddington. It's predecessor XH557 was always going U/S ... we hated it!

Obviously, @MannyZero has no idea what "Duxford" refers to!

Link | Posted on Oct 18, 2019 at 14:52 UTC
On photo Vulcan Duxford-4804 in the Aircraft challenge (14 comments in total)
In reply to:

xpatUSA: I worked on XH558 long ago at RAF Waddington. It's predecessor XH557 was always going U/S ... we hated it!

RAF slang for "unserviceable" i.e. has a problem ...

Link | Posted on Oct 18, 2019 at 05:03 UTC
On photo Vulcan Duxford-4804 in the Aircraft challenge (14 comments in total)

I worked on XH558 long ago at RAF Waddington. It's predecessor XH557 was always going U/S ... we hated it!

Link | Posted on Oct 18, 2019 at 01:09 UTC as 4th comment | 8 replies
On photo Tritium glow in the Watches glowing in the dark challenge (1 comment in total)

tritium is cool ...

Link | Posted on Jul 26, 2019 at 21:33 UTC as 1st comment
Total: 53, showing: 1 – 20
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