LEAF APTUS 75, 75s and II 7

[Alexey]

Hi everybody
I plan to buy one of these digital backs for my hasselblad H2: LEAF APTUS 75, LEAF APTUS 75s and LEAF APTUS-II 7
do anybody know the difference between these 33mp backs?
i can not find enything (

[paul_jones]

i don't much about the II7, but the 75s is twice as quick to shoot as the aptus 75- about a shot a second.

[UlfKrentz]

I´m sure Yaya will chime in with detailed information, prior to this: These are all 33MP backs which share the same sensor. As Paul already pointed to, the 75 is much slower than the 75S. The AII7 was the latest development and does not require a hardware dongle for live view, I think it has an improved display as well but I´m not sure on this. We still use a 75S for a lot of work that does not need more resolution, these backs are easy to use and produce great images. Have fun!

Cheers, Ulf

[ced]

This you can find on the web as example...
http://www.mamiyaleaf.com/leaf_aptus.html

[torger]

If i remember correctly, Aptus 75 and 75s can be used on H4x but Aptus-II cannot due to some compatibility bug.

Image quality wise they are essentially equivalent, I think Aptus-II has considerably faster gui and has a brighter screen better for outdoor use. I think it will be hard to motivate the extra cost for the Aptus-II if price is important. Aptus 75 is really excellent value.

But please wait for the experts to chime in.

[sbernthal]

All these backs use the same sensor but with difference electronics.

Aptus 75 is very slow, connects with FW 400, and has a dim LCD.
Aptus 75s is faster, also connects with FW 400, more noise than 75, same LCD.
Aptus II 7 is as fast as 75s, lower noise than 75, better LCD, connects with FW 800, better color rendition.

H4X connects with Aptus 75, but not with Aptus 75s or Aptus II 7.
If you can get the II and it is not much more expensive, it is the best way to go.
Next priority is 75.
75s is last priority IMO.

[yaya]

As mentioned above there are a few hardware, firmware and software differences between the different models.

The 75S and the II7 utilise FW800 which makes them shoot faster tethered, but they also shoot faster untethered.

The II7, being the newest one, uses an updated GUI which stays active when shooting to a computer (on the other two it is disabled). If you use Capture One for tethering the previews off the II7 come up quicker than off the other backs.

In terms of software support, the II7's files can be opened in Capture One DB (which is free). For the other two you will have to buy the PRO version.

Also being the newest and assuming that you are looking to buy 2nd hand, chances are that you will find a back that is still covered under warranty and that will come with fresher accessories like cables and batteries.

Feel free to contact me offline if you have any further questions.

BR

Yair

[Alexey]

thanx to all )))
Is it possible to open leaf aptus 75 raw files in ACR(photoshop cc)?

[maeda]

All these backs use the same sensor but with difference electronics.

Aptus 75 is very slow, connects with FW 400, and has a dim LCD.
Aptus 75s is faster, also connects with FW 400, more noise than 75, same LCD.
Aptus II 7 is as fast as 75s, lower noise than 75, better LCD, connects with FW 800, better color rendition.

H4X connects with Aptus 75, but not with Aptus 75s or Aptus II 7.
If you can get the II and it is not much more expensive, it is the best way to go.
Next priority is 75.
75s is last priority IMO.

More noise than 75 ? With long exposure ?

[sbernthal]

With any exposure iso 100 and over.

[torger]

thanx to all )))
Is it possible to open leaf aptus 75 raw files in ACR(photoshop cc)?

Yes it's possible. However, there's two options when saving files, compressed and uncompressed. ACR only supports uncompressed. If you happen to save in compressed and need to convert later there is a conversion software from Leaf. I don't know for how long Leaf plan to provide that software though, the .mos format is no longer used in any current products and the latest release were made for rather old Windows and Mac platforms, but still works on current Windows 8 / OS X 10.9.

Dcraw and thus free software like RawTherapee and various third party software supports both compressed and uncompressed.

It would be easy to for Adobe to support the compressed format as it's already reverse-engineered and out in the open so I don't really know why they don't.

[Alexey]

can anybody post some raw files from а 33mp leaf?
one more question : is it possible to check the focus in the field? In my hasselblads (CFV16II and H3DII-39) it is impossible ((( So I have to seek for another DB with great colors

[torger]

Yes it's possible to check focus with all those. With the 75 you need to be patient, takes about 4 seconds to get to 100 percent, but then you can see if it's sharp. A computer screen will resolve even finer grades of sharp vs sharper so it's not perfect, but I find the 75 to be good enough. I use it myself on a view camera.

I've also tried an older Hasselblad back, fast to 100 percent, but image is fuzzy, can't see if it's sharp, so I know the problem, and as said with the Aptus you don't have that problem which I think is unique for a back of this age.

Here you can find a couple of raw samples: http://www.mamiyaleaf.com/samples_aptus-II_7.html

[Esben]

With any exposure iso 100 and over.

I've owned and used both the Aptus 75 and the 75S side by side for years and haven't seen this.

Esben

[torger]

I've owned and used both the Aptus 75 and the 75S side by side for years and haven't seen this.

Esben

As far as I understand the difference is very small, not to worry about in practice. You need to make a scientific side by side test to see a difference. The slight increased noise is related to the increased readout speed, if I remember correctly.

By the way, I have a question -- the speed difference between 75 and 75s is only about capture speed, right? The GUI is no faster I suppose, ie if you zoom a picture it takes equally long time?

[maeda]

I just bought a second hand mamiya DM33 (same sensor than a 75/75s/leaf aptus II 7) and the quality is just astonishing.
Three months ago i bought a second hand H3D39 and was not very happy with the quality of my pictures with my tech cam.
As i just received the back few days ago i don't have a lot of hindsight but i can say the DR is way better as the sensibilty.
And YES you can check the focus on the screen !
Another benefit is that the price of the battery didn't cost an arm and a leg.

[Alexey]

I just bought a second hand mamiya DM33 (same sensor than a 75/75s/leaf aptus II 7) and the quality is just astonishing.
Three months ago i bought a second hand H3D39 and was not very happy with the quality of my pictures with my tech cam.
As i just received the back few days ago i don't have a lot of hindsight but i can say the DR is way better as the sensibilty.
And YES you can check the focus on the screen !
Another benefit is that the price of the battery didn't cost an arm and a leg.

How fast do you get 100% for focus check?
Please share some raw files if possible (iso 50)
ps I have sold my h3dII39 2 day ago and think about the DM33 ))))

[maeda]

How fast do you get 100% for focus check?
Please share some raw files if possible (iso 50)
ps I have sold my h3dII39 2 day ago and think about the DM33 ))))

I'll try to share later some sample raws if you want.
It takes 2 seconds to get 100% focus check.

[LenR]

Alexey1

What kind of work do you do.

Are you a professional or a hobbyist?

L

[Alexey]

Hobbyist
just for fun )