First results from the new CFV 39 part 2

[cs_foto]

thanks for sharing!

the CFV-16 white balance is a bit off / slight cyan cast (out of the DNG)

I like a lot what I see in terms of resolution and colour in the CFV-39 file (dng)

The difference in resolution is pretty obvious at least in these 2 samples...

Cheers!

 

[sperera]

FANTASTIC OF YOU TO MAKE THESE .FFFs available guys.........Im gonna open in Phocus and give you my personal feedback.....I downloaded the files really fast too....no problems whatsoever....then i went and got hold of latest version of Phocus for Mac and PC....if anyone cant get it let me know

 

[bladdered]

I can go take a bath downloading these files.
Thanks to the generous capacity my internet provider allows for it takes 18 minutes to download each file.

Upload is a whopping 120 minutes for every file this size.

That is the consequence of living in the country.

Paul,

First file took me 40 seconds precisely to download.

Did you request using second class ?? Ha.

Gary

 

[polypal]

Gary,

I asked for 24KB got 1500 KB download and 240 KB upload capacity.
Might as well use a pidgeon to get files this size.


No larger capacity offered thanks to Deutsche Telekom.
They were faster in the Tour de France thanks to the "Pharmacie" of course.
Maybe get some dope for these transmission lines.

Paul

 

[fotografz]

Hi Dear Brad, you are so good.

The camera used was 205TCC.
Lens 40IF
shutter speed was between 750/1 and 1000/1.
Settings for iso was 100.
Aperture f5.6.
Hand held

Please everyone these pictures were taken in harsh sunlight ONLY for comparison purposes. These particular ones were sent to Brad for his evaluation of whether what we see is CA related or moire or something else.

Note to new users of Phocus. Be sure to start with all settings at default, and to (subjectively) select Nature in the profile list. If you make WB corrections be sure to save the adjustments before sending to be processed.

Well SAAD, what you are seeing appears in both the 16 and 39 files. After setting everything to default in Phocus, it all but dissappears.

I opened both fff RAW files in both Phocus AND Apple Aperture.

The slight difference in WB between the backs is reversed when Aperture is applied. After WBing off the exact same area in both shots (slightly shaded back of the same boat that seemed the least contaminated by foreign color), Phocus showed the 16 to have a slight bit more magenta in the sky ... when processed in Aperture default, the 39 file had the slight magenta cast and the 16 file was purer. Sounds like software preferences.

As to the artifacting, morie' or whatever it is ... I'm stumped. Never saw anything like that before except on really, really fine details at 400%. That it virtually disappeared when I sent the Phocus file to tiff stumps me also ... perhaps it was being added to the file if any DAC was applied? I don't know how to set up the Zeiss lenses for DAC yet, so that has TBD.

If it isn't a software issue, (I may be dead wrong on this), but since it shows in both files it may be an effect from heat build up. The high operating temp for these backs is 113 degrees F, but used in temps over 100 degrees compounded by being on and building up internal heat could exceed that, and could be the culprit. Or not ... LOL!

Since it initially shows in both files, it doesn't seem related to the different pixel sizes.

Here's the 39 file straight up with Phocus defaults:

 

[sperera]

this is what i see on Phocus at 200%....colour noise, CA's call it what you want its there.....look at the palm trees...and then the gate lower bottom.......

 

[sperera]

closer......

 

[sperera]

closer still.........

 

[sperera]

.....by the way, using Phocus just makes me think of the days when we all sent transparencies to the lab got them back and with a white crayon circled the best shots and had em scanned and that was that......imagine having to process 50 shots in one session.....

My conclusion is the only way medium format digital makes sense to buy into for professionals who have to do their own image processing (this would be me - as opposed to pros who have people to do their processing for them, normally fashion shooters etc) is if Hasselblad and all the others created files with all the corrections done and the image rendered at 100% quality and can be opened in Lightroom, Photoshop etc.

but this is THE argument isn't it and Im not making any revelations......

 

[fotografz]

this is what i see on Phocus at 200%....colour noise, CA's call it what you want its there.....look at the palm trees...and then the gate lower bottom.......

Is it?

Same area with slight adjustments in Phocus ... then to tiff conversion and downsized for web. Hmmmmm ....

Pretty amazing performance at that huge of an enlargement IMO.

Marc

 

[fotografz]

Here are a few mammoth crops ... I up sampled the file to 24" X 18" @ 1200 ppi for a 3.49 Gig 16 bit Tiff file ... and then cropped some small details. This would roughly be the equivalent of an 8 foot wide print @ 300 ppi viewed with your nose pressed against it : -)

The slight fuzziness could be partly attributed to the fact the image was shot hand held ... on a good tripod with mirror up and a cable release it is conceivable that it would be much better.

That lens is simply amazing ... hardly any CA despite the specular highlights, chrome and darks butted right up against brights. Freaky good actually.

Full image with crop areas marked, and the 3 close up crops.

 

[fotografz]

.....by the way, using Phocus just makes me think of the days when we all sent transparencies to the lab got them back and with a white crayon circled the best shots and had em scanned and that was that......imagine having to process 50 shots in one session.....

My conclusion is the only way medium format digital makes sense to buy into for professionals who have to do their own image processing (this would be me - as opposed to pros who have people to do their processing for them, normally fashion shooters etc) is if Hasselblad and all the others created files with all the corrections done and the image rendered at 100% quality and can be opened in Lightroom, Photoshop etc.

but this is THE argument isn't it and Im not making any revelations......

Phocus has a batch processing ability ... and I've used it to move well over 50 shots to full sized tiffs with WB, noise and DAC corrections. I just que them up and let Phocus do its thing in the background.

When using a Hasselblad back for event work where certain things aren't as critical, and I have images from other cameras, I dump all the files including the Phocus DNG conversions into one file, sort by time shot to keep them in the proper sequence, then open the whole thing in Lightroom and batch process. Sometimes with 3 shooters it comes to 1000 shots ... so Lightroom is the best choice. If there is a special shot where I want to apply DAC corrections or color is more critical, I just do that in Phocus. But I've got Lightroom down so well now that unless I need the DAC corrections, I can pretty much match Phocus in most other areas of processing. User defined Presets help with that.

However, I would like to see the ability to apply corrections in Phocus and send them as DNGs for further work in Lightroom/Photoshop. I just don't know how difficult that would be to impliments (?).

Marc

 

[bradleygibson]

Well SAAD, what you are seeing appears in both the 16 and 39 files. After setting everything to default in Phocus, it all but dissappears.
...
As to the artifacting, morie' or whatever it is ... I'm stumped. Never saw anything like that before except on really, really fine details at 400%. That it virtually disappeared when I sent the Phocus file to tiff stumps me also ... perhaps it was being added to the file if any DAC was applied? I don't know how to set up the Zeiss lenses for DAC yet, so that has TBD.

If it isn't a software issue, (I may be dead wrong on this), but since it shows in both files it may be an effect from heat build up. The high operating temp for these backs is 113 degrees F, but used in temps over 100 degrees compounded by being on and building up internal heat could exceed that, and could be the culprit. Or not ... LOL!

Since it initially shows in both files, it doesn't seem related to the different pixel sizes.

Hi, Marc,

All demosaicers will suffer from this issue to one degree or another.

For a given scene at fixed magnification (focal length) smaller pixels will yield less of this because they are effectively sampling the scene at higher resolution. It's not an earth-shattering difference between 16 and 39 Mpixels, though.

I was able to show it so clearly by disabling all of the development controls (not something one would do ordinarily). I just want to point out that the issue is a normal one in digital photography, not a defect with the backs or software, and isn't chromatic aberration.

In the end, you are correct when you indicate that using a good combination of settings at develop time will control this problem quite well and make it a non-issue.

Nice develops, by the way... Whoo hoo!

Best regards,
-Brad

 

[bradleygibson]

However, I would like to see the ability to apply corrections in Phocus and send them as DNGs for further work in Lightroom/Photoshop. I just don't know how difficult that would be to impliments (?).

Marc

It's coming... I read recently that distortion correction is on the way for LR/ACR. It (probably) still won't be as elegant as Phocus, because Adobe's definitely not going to go characterize everybody's lenses. So I imagine Phocus will continue to give superior results more easily than LR even once LR gains the ability. But LR's non-destructive workflow is hard to beat.

-Brad

 

[saad]

Thank you very much Brad and Marc for all the clarification. Now, for something new, and that is the resolution of the new CFV39. I will send 2 or 3 raw files to Brad that demonstrates this, of course this is after making a couple mistakes with camera vibration on a tripod. I used the that unique C120 macro because it has the best MTF chart of, I think any other Hasselblad lens at close range. If Brad doesn't mind please download them and be amazed. And then, I have one question for Marc, "is the CFV39 exactly the same clarity of resolution as his CF39 or is there a difference"?

As I was taking pictures this man creeps up behind me and scares the hell out of me. He calls himself Captain Emilleo and lives with his son in the boat shown in the next picture. For the last 3 years or so he has been repairing that boat, and it looks like it will take him many more years before he can sail off.

At a temp of 38c the metal cabin where he lives will have a temp of at least 55c. He has no aircon and for now no electricity. He invited for a visit, and am wondering whether I should go there with the CFV39.

Both shots were taken with the CFV39, C120 macro at f5.6, iso 400, and the time was 6:15pm.

• Hasselblad - Hasselblad CFV-39
• ƒ/2
• 30 sec
• ISO 400

 

[saad]

As soon as I get Brad's permission I will send him the resolution images. Sorry Brad if I put you in a spot, I promise I won't do it again.

Best regards
Saad

 

[bradleygibson]

Of course, you are more than welcome to, Saad! It's my pleasure, really.

Best, regards,
-Brad

 

[jotloob]

Saad , Bradley and Marc

First of all , I would like to say , I could not read and understand your contributions as fast as they were posted .
Therefore I will have to do some homework now .
In parallel to that , I am fighting a LR2.4 issue , which is not solved yet .
I can not convert the supplied 3FR files in LR2.4 any more , but could do so yesterday morning .

Very special thanks to Bradley and Marc for their expert contributions .
I do appreciate your comments very much . I am glad you are participating here in this forum .

Might be , that I will keep you busy , when my CFV-39 has finally arrived .
But I can not see a CFV-39 at the horizon .

Regards Jürgen

 

[jlm]

last word I had was H will filling all orders by and of August; they are supposed to have stock in the US next week and start shipping end of the week.

hoping for the best, i am supposed to get an update today


jurgen: next month is my calendar pic and my birthday month!

 

[jotloob]

Yes John

Next month , it will be your calendar image .
September is also my birthday month .
If we are both lucky , we will get our ordered CFV-39 in time for our birthday .

I do love to make myself good birthday presents .

Jürgen