Hello Piotr,
I just did a quick test using the camera's auto exposure function.

With T1 1R filter F3.4
without T1 1R filter F4.8

Tiffen claim 1/3 fstop loss

"Hello Piotr,
I just did a quick test using the camera's auto exposure function.

With T1 1R filter F3.4
without T1 1R filter F4.8

Tiffen claim 1/3 fstop loss "

I guess you mean with the filter F4.8 and without F3.4 or not?

Sorry John your right I have put them the wrong way around.

No, I think he's right. The filter takes away light, requiring the camera's aperture to open to allow more light in. f/3.4 with the filter on makes sense - it's a wider aperture than f/4.8.

"No, I think he's right. The filter takes away light, requiring the camera's aperture to open to allow more light in. f/3.4 with the filter on makes sense - it's a wider aperture than f/4.8. "

Right indeed. The camera must compensate for the filter and has to open up the iris.

Thanks John.

Actually I wish you *were* wrong - this would mean the filter increases camera's sensitivity by a full stop.

;)

[quote=Steve Shovlar;1442540]It isn't going to work for anyone... even if you did go through this, (some of) the blacks would keep changing to/from a red brown. That is going to be even more difficult to explain to the bride/groom.

Inspection suggests there is no room between lens and WA to fit even a slimline filter. I would be delighted to be proved wrong here... any one tried it?

So are there any options?

Brian,

In Steve Shovlar's next post right below the one you quote he claims to have solved the problem by remounting the T1 in regular filter ring with threads on both sides. It sounds like that is working with the wide angle. Try emailing him.

There is enough room to fit the bare filter into the filter thread of the Sony lens, and then capture it with a retaining ring from the filter ring the bare filter is removed from. I have not tried this yet but will if I ever get the filters I am promised.

If this idea works, it will probably also allow for another filter to still be used, like a CP or whatever. Then I will probably never remove the T1 unless I am fighting extreme lighting conditions and I have no black issues in the shot.

Come to think of it, getting the 486 filter into the same location might be enough to change the angle of incidence of the entering light rays to alleviate the green vignette problem. I will not have to try that too! (hmmm, likely won't make a difference)

PayPal with Abel Cine Tech
 

I got the Quote, paid via PayPal two days ago, and ...

- nothing! Not even a confirmation of receiving my payment (and mind you , I ordered and paid not for the T1 filter only).

Andy, I hope you will resolve this soon.

Piotr

use with WA lens: close... very close... but not quite
 

Excellent suggestion, tried it and the filter finished flush with the filter thread of the lens so the retaining ring just does not quite catch the thread.

Perhaps an optician will be able to grind a rebate into the filter so that it will seat slightly lower.

I had no idea that the filter was that thick. Oh well.

For everyone's information, I've just received confirmation of my order from Nichelle at Abel Cine. The T1 Tiffen filter is still back ordered and it is not expected before the end of next week.

Thanks for sharing as I'm still waiting for an acknowledgement to my intial enquiry.

I'm sure you will get it Paul - Nichelle is a really nice person, but extremely busy, too :)

I can confirm that the problem does seem to be in supply from Tiffen. Their local online reseller informed me two weeks ago they were waiting for a new shipment.

I can imagine just how many people want to get their hands on one of these filters. Hopefully they'll start trickling though soon.

T1 and wide angle
 

I am still searching for a way to use t1 filter with the wide angle lens.

In the spirit of Edison... here are some ways that don't work:-


1) Grinding filter:
Optician tried on diamond belt, but glass very tough. End result was the edges of the filter only got polished rather than ground much thinner. He advised against using more pressure while grinding as the risk of breaking the filter was too high. It may have been worth trying if the filters were cheap and readily available...

As the point of grinding filter was to enable the retaining ring to fix the filter, we then tried
alternative methods of fixing the bare filter in place without using the retaining ring:

2) locktight the filter in place: Did not hold

3) Glue it in place: Held OK but... the wide angle adapter would not fit.

Inspection then revealed the rear element of the WA adapter is convex and stands proud of the face of the bayonet mount. It therefore relies on the front element of the lens being recessed to provide clearance. With (only) the filter glass in place there is not sufficient clearance. Should have tried before gluing but you learn from mistakes.

Filter removed from Lens and returned to its mount.

It appears the filter will *not* fit between lens and WA.
Back to the drawing board.

[Apologies if this shouldn't be posted - as far as I can tell, there are no UK sponsors at present]

Just spoke to Top Teks in the UK and they have had their first 4 T1 filters come in, and go straight out. More are on order. They are quoting £60 plus £6 postage plus VAT and will put your name down against future stock.

N

You are correct. I just got my filters and did some measuring before making any attempts like this.

The T1 filter element is 2.5mm thick. The gap between the back element of the Sony 0.8x and the front element of the stock EX3 lens is 1.6mm ±0.1mm. I did not measure any more precisely as it was pointless given the result from the lower precision measurements.

Unless the filter was 1mm or less thick, it would not be a good idea to put it between the wide angle and the stock lens as this would severely change the optical design and cause bad aberrations. perhaps Tiffen made the filter this thick so as to prevent its use this way and to avoid complaints of poor image quality when used with a wide angle adapter.

I also did a rough measure of the light loss on my camera and it appears to be around 3/4 of a stop.

I guess it's time for a matte box and a 4x4.

Okay - sorry if this has been covered in this thread already (didn't read the whole thing) but does this filter absolutely need to be put directly on the camera, or can it be used/be effective, on a lens attached to my 35mm adapter?

anywhere in the optical chain Trevor. Its just an ordinary dye filter.

okay - wasn't sure since I haven't used a filter like this.

interesting... I may not mind picking up 3 of these to use on my three lenses... they'd just need step up rings since unfortunately they aren't offered in varying sizes... too bad they don't have a T1 IR that works in a mattebox!

The Tiffen T1 white paper says that the filter is available as 4x4, 4x5.65 and 6.6x6.6, though I guess they are flat out to meet the demand for 77mm at the moment.

ahhhh... haven't seen the whitepaper. i guess i should try tiffen directly and see what the deal is or where to get a 4x5.65... thanks Nick!

I ordered this from Top Teks about two weeks ago, it is being delivered today. Put your name on their pre-order list, they will ring you when it becomes available.

Just as I finished posting my previous reply, the courier delivered my Tiffen filter from Top Teks. It is the slim version with only the lens thread, but that is no problem as I do not intend to use extra filters.

I also received an extra battery BP-U60 from another supplier, I can't get over the price of this £192. In my opinion this is a downright rip-off, but unfortunately I need the battery for my assignment in Africa next month.

Why didn't you get the swit battery ? It's about half the price, same capacity and has a D-tap outlet.

Paul.

From what I have read it is also about twice the size and the lead is for the EX1.

No it's not twice the size, just a tiny bit bigger, the EX1 and EX3 swit battery is the same except that the EX3 version has a slightly longer lead.

Paul.

Hello!

Who can show some footage filmed with the Tiffen T1?

Uwe

I've had mine on order with Top-Teks for weeks. Got a phone call yesterday telling me they had one with my name on it. Just waiting for it to arrive (next day is always two days to the Isle of Man) plus the boats and flights were cancelled yesterday due to the Force Nine Gale winds and rain, we had :) so thats probably slowed things further.

Hello All,
I have just completed a shoot and used the Tiffen IR filter and my black's on dinner suites are dark and rich and really stand out with the whites of the shirts. I am glad I purchased this filter as the event I have just covered they had black tablecloths. This is the coating that Sony should have included into the camera's ND filters and no one would have a problem.

I can really recommend this Filter it is a must have for EX1/3 owners

Can we see it?

Good news ...
 

Thanks Lance ... I'm still waiting for an email stating mine is on it's way. I have no idea when it will be sent but ASAP is best. I recently shot a jazz performance and invariably the blacks looked brown.

Hi Dean,
A word of caution if you are using a matte box with the 4x4 version do not leave any another filter attached to the camera lens as you will suffer from secondary reflection onto the 4x4.

Didn't realize ...
 

the T1 has the same propensity as the 486?

Just ordered a 4x5.65 T1 IR from Abel Cine - they have 19... er, 18... in stock. Can't wait to finally have this issue resolved!!

Well, my Tiffen T1 IR Filter has just arrived, from Top-Teks! It has a thread front and back. However it fits perfectly under the lens hood. Did a couple of test shots on a shirt I know turned brown/red and it is now a deep rich black, just as you’d see with the naked eye! Brilliant!

They seem to have stock at Filmtools. My 4x5.65 is shipping today.