Home

Please support mflenses.com if you need any graphic related work order it from us, click on above banner to order!

SearchSearch MemberlistMemberlist RegisterRegister ProfileProfile Log in to check your private messagesLog in to check your private messages Log inLog in

The "3D" thread
View previous topic :: View next topic  


PostPosted: Fri Jan 25, 2013 3:58 pm    Post subject: Reply with quote

10cm? That's a BIG front element!


PostPosted: Fri Jan 25, 2013 4:08 pm    Post subject: Reply with quote

I had to check Embarassed my eyes are a little under 6cm apart. Shocked


PostPosted: Fri Jan 25, 2013 4:09 pm    Post subject: Reply with quote

Yes, front element.

10cm isn't so big on a large format.


PostPosted: Sun Mar 10, 2013 6:54 pm    Post subject: Reply with quote

I'm not sure if I posted this shot in this thread before but I think it's a good example of 'pop'.
I was looking for a new cover photo for my Google+ account and this Gyr Falcon stood out, literally.
Taken with a Zeiss 135/3.5


#1


PostPosted: Sun Mar 10, 2013 7:02 pm    Post subject: Reply with quote

Amazing Gary!


PostPosted: Thu Mar 14, 2013 1:28 am    Post subject: Reply with quote

iangreenhalgh1 wrote:
I've been reading about 3D effect. It is greater the larger the format, you can find many examples of 19th century photos that have massive pop. The reason is microcontrast.

Another factor is the size of the input pupil of the lens, a lens with a pupil of 10cm or greater will have a lot of pop because the distance between the human eyes is less than 10cm and the lens can 'see' round either side of an object to an extent human vision can't.

Old lens with 10cm entrance pupil? That must be a really really fast lens
I don't think that size of the entrance pupil has much to do with microcontrast
The lenses with the highest microncontrast I had all had comparable pretty small entrance pupils
Biogon 28/2.8 T* Contax G for example (very good 3D-pop)
While the one of the lowest microcontrast lenses I had offered a full 12cm entrance pupil lens.


PostPosted: Thu Mar 14, 2013 4:06 am    Post subject: Reply with quote

The size of the entrance pupil and microcontrast are two separate issues. The reason why a large entrance pupil gives a 3D effect is because it's wider than the distance between the human eyes so in comparison to our vision it can 'see' around the sides of objects.

Even the best 35mm and digital shots with the best T* lenses can't compete with 100 year old large format images for 3D pop, that is only partly due to microcontrast.

Look at some old 8x10 plates, there is where you will find the most incredible 3D pop.

This is a poor example, but you can still see the effect, look at the two boys standing up, how they have a dimensionality:



Or look at the great feeling of depth in this shot:



This one has great depth and dimension too:



I can't find the example I was hoping to show, of a policeman and motorcyle in washington in the 1920s, it had jaw dropping pop. Here's a couple that have the same effect but less pronounced:





PostPosted: Thu Mar 14, 2013 4:10 am    Post subject: Reply with quote

I found it, check this out for 'pop':



PostPosted: Thu Mar 14, 2013 10:17 am    Post subject: Reply with quote

Is it me? I can't see any of your images there Ian. Sad


PostPosted: Thu Mar 14, 2013 10:22 am    Post subject: Reply with quote

kds315* wrote:
Amazing Gary!

Thanks. Smile


PostPosted: Thu Mar 14, 2013 3:13 pm    Post subject: Reply with quote

Not sure what's going on with the images, here's the last one of the policeman again, I uploaded it from my computer this time instead of linking from shorpy.com:



PostPosted: Thu Mar 14, 2013 3:16 pm    Post subject: Reply with quote

That's better, he really does pop there. Very Happy


PostPosted: Thu Mar 14, 2013 3:53 pm    Post subject: Reply with quote

Large format is where the real pop is to be found, that picture is 1923 so an uncoated lens.


PostPosted: Thu May 30, 2013 10:18 pm    Post subject: Reply with quote




3d?


PostPosted: Fri May 31, 2013 10:10 am    Post subject: Reply with quote

the first with Canon 100mm f/2


Canon 100mm f/2

it is very difficult to take 3d shots with Canon lens!


PostPosted: Sat Nov 02, 2013 7:01 pm    Post subject: Reply with quote

Konica 1.2/57mm and NEX-C3. Brina is the girl. With permission of mom Mateja. No editing but resize:


PostPosted: Thu Nov 07, 2013 7:18 pm    Post subject: Reply with quote

It may just be me, but I find a lot of pop to this one.

Taken with Contax-Zeiss S-Planar 4/100 on Sony Alpha 850


PostPosted: Fri Nov 08, 2013 1:23 am    Post subject: Reply with quote

First time I've seen this thread, so I'm commenting on the photos on the first page. I see photos that use shallow depth of field to isolate the subject. On the first photo I see a box advertising something annoyingly in the foreground of what would be a pleasant street scene.

Not 3d by any means. A flat plane in focus doesnt make 3d. The apearance of solidity and roundness of the subject makes 3d. Not its separation from the background.

Poilu said "maybe its just in my head"

I think its all in the head. But not mine.


PostPosted: Fri Nov 08, 2013 5:55 am    Post subject: Reply with quote

Pancolart wrote:
Konica 1.2/57mm and NEX-C3. Brina is the girl. With permission of mom Mateja. No editing but resize:


3D or not, what a lovely portrait!

Cheers,

Renato


PostPosted: Fri Nov 08, 2013 12:44 pm    Post subject: Reply with quote

Thank you Renato. I have many photos from this autumn series with Konica 1.2/57mm but i find it hard to separate not good from good ones.
Once done i'll publish in its own topic. At least with this photo i was sure (in my head Wink ) it's 3D Smile.