fred 76

Lives in France Normandy, France
Has a website at www.fredmi.fr
Joined on Apr 13, 2012

Comments

Total: 13, showing: 1 – 13
In reply to:

chshooter: The star eater problem is another reason why Sony can't be used as a system for professionals. Random changes in firmware, image ruining software tweaks and a terrible info policy are all dealbreakers and far more important issues than a fast framerate or a few pixels more

Canon, Nikon, Pentax, Fujifilm... are selling cameras and lenses to amateur, passionate and professionnal photographers.

Sony is selling products to clients.

Do you understand the difference ?

Link | Posted on Oct 18, 2017 at 15:23 UTC
In reply to:

mpgxsvcd: So if you can’t use Sony then what should you use for Astrophotography? Canon has been said to have poor dynamic range and poor noise performance. Nikon doesn’t have the software support that Canon does. So what is left Olympus and Panasonic? Fuji? CCD with all of its cost?

Most astronomy photographies made with DSLRs are Canon's because :
- they were the first to make good DSLRs at a reasonable cost
- when Nikon made their first DSLRs, they were suffering an equivalent Star Eater problem as Sony's
- Canon's cameras are easy to modify (filter removal)
- Canon's SDK has always been free and public with almost no restriction for developpers, though Nikon's SDK was very expensive and restrictive (they released their SDK only a few years ago)
- A lot of astronomical systems, hardwares and softwares are designed to work with Canon's cameras, though it is less and less the case now.
- Canons cameras are also lighter in weight than Nikons. That's an important thing to know because motorized equatorial mounts are really expensive

Dynamic is not a great deal with DSLRs when shooting astronomical images. We stack many tens of pictures so the dynamic will be there. Shot noise and thermal noise are more important, weight and price also !

Link | Posted on Oct 18, 2017 at 15:17 UTC

Let's have a collective vision : no more Star Eater in the A7, A7S, A7R and A9 !

Please sign the petition :
https://www.change.org/p/sony-remove-the-star-eater-on-sony-a7s-r-mk-i-ii-and-a9-cameras

Link | Posted on Sep 12, 2017 at 07:52 UTC as 31st comment | 1 reply
On article Canon EOS M hands-on preview (566 comments in total)
In reply to:

fred 76: This SLR is of no use in astro-photography :

http://www.ubergizmo.com/2012/11/canon-eos-m-no-remote-shooting/

Remote Capture is impossible with it !

That's crazy for such an expensive camera.

Sorry I dropped the "D" !

Link | Posted on Jan 9, 2013 at 13:14 UTC
On article Canon EOS M hands-on preview (566 comments in total)
In reply to:

fred 76: This SLR is of no use in astro-photography :

http://www.ubergizmo.com/2012/11/canon-eos-m-no-remote-shooting/

Remote Capture is impossible with it !

That's crazy for such an expensive camera.

Tethered shooting is not allowed, and Live View through the computer screen is also not allowed.

This appears to be a last minute decision from Canon's marketing team since these functions were listed in the preliminary specification (as of early oct 2012).

The EOS M should therefore be rebranded as "Powershot M" instead of "EOS M".

Link | Posted on Nov 26, 2012 at 08:03 UTC
On article Canon EOS M hands-on preview (566 comments in total)

This SLR is of no use in astro-photography :

http://www.ubergizmo.com/2012/11/canon-eos-m-no-remote-shooting/

Remote Capture is impossible with it !

That's crazy for such an expensive camera.

Link | Posted on Nov 21, 2012 at 15:32 UTC as 58th comment | 3 replies
On article Canon EOS M hands-on preview (566 comments in total)
In reply to:

abi170845: There's no bulb setting? I'm a landscapist and bulb hardcore, 100% of the time I bulb my exposures for 10 minutes starting at twilight( if twilight starts at 5:27 a.m, I usually bulb for 10 plus minutes at around 5:20 a.m)

And how about the availability of extra batteries and remote control or cable release?

It should be worth treating such long exposures as the astronomy photographers do, by substracting a "dark" and dividing by a "flat" master images. The noise will drop down dramatically and the vigneting/dust traces will disappear.

Link | Posted on Sep 25, 2012 at 08:09 UTC
On article Canon EOS M hands-on preview (566 comments in total)
In reply to:

abi170845: There's no bulb setting? I'm a landscapist and bulb hardcore, 100% of the time I bulb my exposures for 10 minutes starting at twilight( if twilight starts at 5:27 a.m, I usually bulb for 10 plus minutes at around 5:20 a.m)

And how about the availability of extra batteries and remote control or cable release?

It seems that in Bulb mode, you can only select 400 ISO. However it should be possible to remote control the M from the EOS Utilities' Remote Capture tool.

For the batteries, it usually takes a few month (weeks) before a chinese maker supplies a compatible battery.

Link | Posted on Sep 13, 2012 at 15:48 UTC
On article Canon EOS M hands-on preview (566 comments in total)

The µ4/3 sensors are 17.3 mm × 13.0 mm in size compared to the 22.2 mm x 14.5 mm APS-C. This is about 40% less in surface. That's a lot !

For the same number of MPixels, an APS-C will have bigger photosites hence a better sensitivity and less noise.

That's a technological fact.

Link | Posted on Sep 7, 2012 at 08:45 UTC as 78th comment
On article Canon EOS M hands-on preview (566 comments in total)

There is definitely NO REASON to buy that kind of camera because it is FAR TOO MUCH EXPENSIVE.

A G1X will do the job for less, with only advantages :
- integrated flash
- orientable screen
- small size
- ability to store RAW pictures
- big CMOS sensor (almost same size than a EOS sensor)
- only 560 EUR !!!

The only advantage of the M compared to the G1X is the ability to change lenses and to use the EOS Utilities softwares. Is it worth the huge price increase ?

Link | Posted on Aug 27, 2012 at 07:05 UTC as 82nd comment | 2 replies
On article Canon EOS M hands-on preview (566 comments in total)

I hope they will sell it bare, without anything (no lens, no flash), just the body.

Link | Posted on Aug 21, 2012 at 08:43 UTC as 86th comment
On article Canon EOS M hands-on preview (566 comments in total)
In reply to:

fred 76: This camera has a big potential for astrophotography. It is light weight, has a short flange to sensor depth, and a decent sensor. But to shoot astrophotos, we need to be able to operate the camera from EOS Utility (or any other software that uses the Canon EOS SDK).

Some questions about the use of the EOS M with EOS Utility:
1) will it be possible to do remote shooting?
2) will it be possible to get Bulb with very long exposures (say 10 minutes or even more)?
3) will it be possible to use the EOS Utility intervalometer?

Last question about modifying this camera :
1) is it difficult to open so that we can remove and replace the internal UV/IR cut filters?

Fred

... seen on Canon Canada : when using the Bulb mode, only the 400 ISO gain can be used.

Is it also valid when using Remote Capture ?

Link | Posted on Aug 2, 2012 at 15:17 UTC
On article Canon EOS M hands-on preview (566 comments in total)

This camera has a big potential for astrophotography. It is light weight, has a short flange to sensor depth, and a decent sensor. But to shoot astrophotos, we need to be able to operate the camera from EOS Utility (or any other software that uses the Canon EOS SDK).

Some questions about the use of the EOS M with EOS Utility:
1) will it be possible to do remote shooting?
2) will it be possible to get Bulb with very long exposures (say 10 minutes or even more)?
3) will it be possible to use the EOS Utility intervalometer?

Last question about modifying this camera :
1) is it difficult to open so that we can remove and replace the internal UV/IR cut filters?

Fred

Link | Posted on Aug 2, 2012 at 14:29 UTC as 98th comment | 2 replies
Total: 13, showing: 1 – 13