Aivascope 1.75x update may 2022 : we have a few slots over for the batch of June 2022, get your copy a lot quicker by ordering now! email info @gafpagear.com or order directly https://gafpagear.com/product/aivascope-1-75x-anamorphic-adapter/ A small update for those who are awaiting the new Aivascope 1.75x . This weekend we were very honored to had Valdas Misevicius (Mr. Aivascope) and his daughter over at our office, all the way from Lithuania. They brought a few very cool and exciting lens projects. One of these lenses is the highly anticipated Aivascope 1.75x with an improved helicoid which we will also see in the December batch of Aivascope 1.5x . It has better grease leak protection compared to the current ones and an all new skew locking ring. The 1.75 is slightly bigger than the 1.5x and thus also a bit more heavy it features a 40mm rear element and we found it can cover a 50mm focal length in 36×24mm sensor dimension which gives a 2.63 aspect ratio without vignetting. The lens is amber coated with a few hints of magenta. Close focus is 80cm. Aivascope is planning to ship the first small batch to us in January, we are almost sold out on the 1.75x , if you want any info please reach out to info@gafpagear.com We plan to upload all specs and photos and footage shot with this adapter this week as a new entry to our shop. So keep an eye on our website. Have a great day!

Coverage / distortion here is the most ugly but also an important test.. bottlenecking the scope with a 50mm pancolar. and reveiling its distortion. All specs are in the video. As you can expect the most extreme thing you can do is do pans, with straight lines close to the camera (1.5m away is the window). Also as you can expect there is some anamorphic breathing going on, when going from infinity to close focus (80cm) > this is no sharpness test, zero contrast ratios (overcast), and a 50mm 1.9 wfo 🙂

flare Here we go, a quick nasty flare test! All specs in video title overlay.

a bit more info The Aivascope 1.75X has a slight improved helicoid and a protection against grease leakage, The latest generation of the 1.5X (gen4) has a 38mm rear optical element, and the 1.75X is even larger, featuring a 40mm rear element. The total weight of the 1.75X including the Rod support is 1.4Kg which is about 600 grams more than the 1.5X. Close focus is the same as the 1.5X namely 80cm, and we found that the scope is able to resolve a 50mm focal length on a 36X24 sensor which equals a 2.63 aspect ratio. When finalizing in 2.39 a shorter focal length would be possible. The 1.75X has a similar coating to the 1.5X which has predominantly amber and a hint of magenta. the front filter thread is 82mm The price of the Aivascope 1.75X will be 2300 euro ex vat, if you are within the EU and you can provide us with a VAT number we won’t add VAT to the invoice. If you buy outside the EU we won’t charge VAT by default.* *Please note that additional charges from customs can be in place if you live outside the EU send us an email for more info info@gafpagear.com

Here are a few stills with the 1.75X and a biotar 58mm set at 2.8. I also have set up a dropbox where you can download the tiffs, to examine them better, please only for your own examination, dont plant these pictures everywhere on the net 🙂 https://www.dropbox.com/sh/f07tcurcn5gm25v/AACIPUEHHYgV3w_enlLd8rWia?dl=0 they are just quickly snapped pixtures, and show you the barrel distortion of this lens quite nicely. Most of you will not go such wide, but it’s good to know whats possible. This was taken with a 36X 24 sensor, so leading to around 2.66 cinemascope aspect.

Hi Jerome, I would like to know the front filter thread size and front diameter size of the 1.75x. I’ve heard the price will be around the same as the 1.5x can you confirm this? And in comparison to a DIY anamorphic solution, such as a 16h + FM, what would be the pros/cons? Cheers! 🙂

Marcel Hey Marcel, all these answers are two posts up. Jerome The Aivascope 1.75X has a slight improved helicoid and a protection against grease leakage, The latest generation of the 1.5X (gen4) has a 38mm rear optical element, and the 1.75X is even larger, featuring a 40mm rear element. The total weight of the 1.75X including the Rod support is 1.4Kg which is about 600 grams more than the 1.5X. Close focus is the same as the 1.5X namely 80cm, and we found that the scope is able to resolve a 50mm focal length on a 36X24 sensor which equals a 2.63 aspect ratio. When finalizing in 2.39 a shorter focal length would be possible. The 1.75X has a similar coating to the 1.5X which has predominantly amber and a hint of magenta. the front filter thread is 82mm The price of the Aivascope 1.75X will be 2300 euro ex vat, if you are within the EU and you can provide us with a VAT number we won’t add VAT to the invoice. If you buy outside the EU we won’t charge VAT by default.* *Please note that additional charges from customs can be in place if you live outside the EU send us an email for more info [ info@gafpagear.com ](mailto: info@gafpagear.com )

Jerome please ignore my ignorance 🤦♂️

@ “Джером” # p503 nice! thank you for your overview!

Biometar 80mm in OG Biometar 80mm in 36X 24mm in open gate, not the sharpest taking lens, but a beautiful ‘ vintage ’ zeiss rendition.

NIKON pancake 50mm in 16X22mm okay now we saw the usual suspects, what about a sharp pancake in 16X22 mm image size. A nikon pancake 1.8 50mm multicoat (i have a edition that doesn’ t have blue green coat but magenta purple amber). set at f2.8. even though the MAVO edge has low rolling shutter, anamorphic will increase rolling shutter artefacts by the number of it squeeze ratio , in this case 1.75X. I love the 16X 22 mode in the mavo lf which will get you extremely close to native 2.39. I don’t like a 50m with 1.75X in open gate (36X 24mm), even though it works its too extreme aov for me, but if anyone wants to see proof, a pancake can cover without severe vignetting, shoot me a message here. IN this example, same light as in previous example, exact same grading. \

Aivascope 1.75X

Jerome

hey @colin yes, the rear thread is 58mm and rear optical element is 40mm. did i made a typo somewhere? if so i will correct it

colin

@Jerome, I think you never specified the rear thread size anywhere previously. You only indicated the rear element and the front/filter thread size.

Jerome

colin Hey COlin it’s only on our website i think, I will also add it to the first post on top of this page. thanx!

Zhong

Anyone an idea what Justin Philip used on his aivascope. It’s seems like an adapter to a bigger outer diameter to minimize the light leak. And so he can just slide on and off the aivascope inbetween changing the taking lens.

Check it out. It’s a smart way and I would love to order it before the 1.75x Aivascope comes :-)

Jerome

Zhong hey zhong this is just a stepup with quite some depth to it, you will notice that light spill wont be that much of an issue, if you siomply slide the aivascope to the taking lens, however we recommend to go with xume magnetic adapter,s it will both decrease lens wiggle to a bare minum and also closes the gap when it comes to light leaks. if you need mor info let me know

SantaMonicaAnamorphic

Jerome @Zhong - could you guys share more info on how you’re using the XUME magnetic adapter. From what I have seen the magnetic part is on the filter and the filter tray on the lens is not magnetic. Is there a version where the filter tray / receiver is magnetic or is there a 62mm thread magnet that would go onto the back of the Aivascope 1.75x? Many thanks for any tips.

turing

hey Jerome, few questions:

Possible to purchase it for a little less and only receive the optics?
Any other examples of faces etc at close focus with pans? I am concerned about barrel distortion.

Thanks!

Jerome

turing

turing hey Jerome, few questions:

Possible to purchase it for a little less and only receive the optics?
Any other examples of faces etc at close focus with pans? I am concerned about barrel distortion.

Thanks!

sorry thats not possible. YOu mean if we can deliver you the glass elements without the housing?
we can make an example, but it highly depends on fov of the taking lens, and thus the amount of the anamorphic glass you put to use. On a 75mm in large format theres almost no barrel distortion for instance, thats about the widest you can go with about any projector scope. Let me know more details how you want us to test this and we will make it happen. Please keep in mind that anamorphic shooting is about distortion, ifyour only looking for oval bokeh there are other ways like oval iris inserts, or if you looking for horizontal flares, you can get streak filters.Let us know what you want and we setup a test!

greetings
Jerome

turing

@Zhong that looks like a Simmod knurled ring to me.

Zhong

turing yes but it needs to have an inner thread to put on the rear.

turing

@Zhong: it does: https://www.simmodlens.com/product-page/signature-series-80mm-o-d-pro-simring

Zhong

turing it does not. The smaller thread is an outer thread to screw into a lens. But the aivascope has at the rear and outer thread

turing

Jerome I am most certainly not in the “plz just give me an oval iris insert” camp 🤮

The worst case re: distortion will always be on the wide end for obvious reasons, so I’d like to see more of the widest you can get - I second the “brick wall” test request.

Also some more moving fairly portraits of people would be quite useful.

turing

The worst thing I can say about this test is that it doesn’t attempt other framing of the subject (closer at center and thirds for example) but otherwise provides a very good visual overview of the characteristics of the pre36.

turing

@Zhong seems like a job for a coupling ring: https://www.ebay.com/itm/184120041802

But to be clear, as far as I can tell this proposes just surface contact between that simmod ring and the front of the taking lens. I think the magnetic approach is better.

Zhong

My problem with the magnetic, it sums up to a good amount of money.
Thanks anyway.

I am preparing for my scope. So I couldn’t find a outer diameter to make a lens cap. Or does it comes with an lens cap?

alanmorphic

I’m not seeing a 1.75 Pixel Aspect Ratio setting in Resolve. Only 1.5 and 1.8. How would you properly desqueeze?

Jerome

alanmorphic just do it in the color panel. Input scaling then width the 1.75

alanmorphic

Thanks Jerome but I don’t see any Input Scaling in the color page of Davinci Resolve. The way you described it seems like how you do it in Premiere.
Resolve has various desqueeze options but 1.75 is not one of them.

ScopeO

I too am interested in how a 1.75x desqueeze will work in Davinci. I wonder if a 1.8 desqueeze monitor option will be sufficient on-set? Many monitors have this option to accomodate for the Vazen’s, and unfortunately neither my camera nor monitor have a custom or 1.75 option.

Zhong

I am a bit confused now. On the website of gafpa it says it has an front Outer diameter of 82mm. In this forum it say it has a 82mm filter thread. I think both at the same time is not possible. Does anyone have an answer or an aivascope 1.5x. I think it should be the same spec at the front.

Jerome

Zhong I will check this on Tuesday and rectify which info is hood or wrong!

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