Contax TLA 360

G

Guest

Hello:
With the Contax TLA 360 on the C645, how do you program to fill flash in manual and Av modes? Do I simple reduce the f-stop on the flash or do I use the exposure compensation on the flash? Also when using exposure compensation in Av on the camera, does this effect the flash?

Thanks for the help!

Ted
 
G

Guest

"With the Contax TLA 360 on the C645, how do you program to fill flash in manual and Av modes?"

The user manual indicated that in non daylight situation, swith to AEL, it will be in slow sync. So background and subject will be evenly lited. In dayligth with the TLA360, fill flash is automatic implied. For me, in both situations, I use AEL regardless and get good results. The above mentioned methods work in Av and Tv modes. For manual mode, I guess you have to use the pre-flash TTL and figure out the correct exposure.

When you use the exposure compensation in Av or Tv mode, the flash output will be affect accordingly.
 
G

Guest

hello:
I can't remember what the left switch above the LCD screen in the TLA 360 flash is for?
It has two options:
>>! or normal

(! being the flash symbol)
Any help would be appreciated.
Tristan
tristan@tristanreyes.com
 
G

Guest

> Tristan I have an NX that has the same symbols wich is for second curtain flash synch and normal respectively. On second curtain the flash fires at the end of the exsposure.

Kevin
 

clim

Member
When the TLA 360 is used with an extension cord off the Contax 645, it loses the ability to automatically transfer the F number, the lens focal length, and the ISO number. Seems that this is because the extension cord has only 3 pins instead of 5 pins on the flash. Does anyone know why Contax do not provide an extension cord with full automatic transfer or is there a third party cord that can be used. Thank you for any advice.
 

yogi

Well-Known Member
You can use the Canon 5 pin Off camera TTL extension chord which will work. Contax doesn't make one unfortunately.
 

clim

Member
Almon Thank you. I have tried once before the Canon 5 pin extension cord that I use with the EOS system (both 1V and 10D). It can do TTL with Contax 645 successfully but still no transfer of the F number or the ISO data. Maybe I have to try again. It is a small inconvenience to have to change the F number on the flash. Thank you.
 
M

marko_m

There is a Contax TLA Extension Cord 100SS cord that you can connect the TLA 360 to the 645 body and have full use of TLA 360 TTL functions, the Canon cord doesn't always work because the contacts and pins don't line up perfectly. Or try the Contax TLA Extension Cord 100S, but I'm not 100% sure on the connections.
 
C

colin_groskopf

Just purchased a 645 with the 360 flash. I'm having a heck of a time getting it to expose properly in TTL Mode. Closer subjects are all overexposed. So far the only thing that seems to work is pre-flash and adjust throught the exposure compensation dial. Isn't the flash supposed to compensate automatically in TTL mode? I'm really struggling with this, can anyone help?
 
K

kaisern

>=20 >=20 >=20 > [What I found is pretty much the same as yours, Contax is not in the same > league for flash control compares to N or C. However, what I learned to = be > more useful is using the exposure mode setting at Manual, then the flash = at > auto mode, and it somehow did better than using AV mode. And you are rig= ht, > the pre-flash is just unbeatable. Regards, kaisern] >=20 >=20 >=20
 
C

colin_groskopf

Kaisern: Thanks for your advise. What do you mean by "...N or C." I'm so frustrated with this flash I'm contemplating just using a Metz 60. Do you have any advise on that approach? Thanks.
 

fotografz

Well-Known Member
He means N for Nikon and C for Canon.

Check to be sure you don't have the meter set for spot rather than evalutive. It's the switch just behind the hot shoe. I don't believe the TTL works with the spot meter.
 
C

colin_groskopf

Thanks Marc. Your help is greatly appreciated! I did have it on evaluative. Is there a chance that I should use the metering portion of the view finder to take the reading in TTL and then switch to AEL, then recompose the picture and then shoot? It sure seems like a lot of fuss.

Thanks again.
 

albert4321

Well-Known Member
The pre-flash mode for the C645 is performed in spot mode. So Marc's suggestion makes perfect sense.

Normally, I use mono lights for all my flash works, and meter my sense with my Gossen StarLite meter. Hence, my experience with TTL is minimal.

Last month, I shot a wedding with the TLA360 and my N1 + N24/85. I used the flash for every shot in TTL, including day light indoor, sunny outdoor, and night time party. All 500+ pics came out perfect as I followed Marc's suggestion from the other posting.

Before that, I did a party with my N1 in fully TTL mode, most of my flash pics were over-exposed in the subject, especially the wedding gown. And the blackground was under-exposed.

What Marc suggested was, use manual mode with low shutter speed, set the flash to TTL and let it does the job (compensate). The idea is to allows more light comes through for the background.

With that pricinple, I set the camera in Av or Tv auto mode, set the apperture wide enough, and/or set the shutter speed very low, then set the flash to TTL. The result will come out great.

Colin, You don't really have to meter every shot and set to AEL. The idea is use the TLA as, kind of, a fill flash, meter the sense as if no flash being used, either auto or manual. Even the meter show one or two stop under, or over, it will come out okay. You have to try it out. It is the pricinple of lighting, has nothing to do with Nikon or Cannon. Although I agree the N or C has better (newer) eTTL.
 
G

guyg

Albert and all,

I have always had the same problem with my 360 on my C645. I am used to my Canon 550EX on my 1V that works perfectly. When you say set a low shutter speed, how slow can you go. Obviously, motion is a primary concern, especially when shooting people in the scene. I'd love to go back to using my Contax for flash.

Guy
 

albert4321

Well-Known Member
Guy,

Good point. As the EOS 1V and the Contax N1 has matrix meter, which make the TTL flash works better. The C645 only have the Average Center–Weighted meter. Given the weight of the C645, it is hard to use it in very low speed.

I used my N1 with the TLA360 as low as 1/2 sec with the lens wide open. I leaned myself against the wall and the picture come out great. The background of a 2000 sq feet dinning room was well exposed and my main subject was only 4 feet from me. Most of the time I used 1/30 sec in a relative dim room. Inside the church in day time, I normally can go for 1/60 with the lens wide open. DOF usually not a problem especially when I used a wider focal length.

Flash freezes action, so generally you can use very low speed without any problem. You have to experiment how low you can go with your gear.

I add that I would use hi latitude films (such as ISO 400 negative) if situation allows, and a Sto-Fen diffuser on the flash. No compensation needed for TTL mode with the diffuser on.
 

alan_h

Member
Guy,
You're right about the Canon E-TTL, it is amazing. The 1/50th power preflash or whatever it is, really works great. It's really convenient to bias the strobe power without affecting the ambient, too. This was one reason I switched from RTS III's to the EOS 3. I have the Metz 60CT2 for TTL on my Contax 645 and it generally works okay. I rarely use the Metz because I'm always using studio strobes.
 
K

kaisern

>=20 >=20 >=20 > [I meant Nikon and canon. Rgds/Kaisern] >=20 >=20 >=20
 

clim

Member
Albert and all I have used the Contax 645 with flash and so have the Canon (both 1V and 1Ds) with the 550EX. The Canon has preflash which the camera can then apply their multizone evaluation formula to compensate for high contrast situation. So generally, it works very well. With Contax 645 when you shoot closeup there is always a lot of dark areas for the background. So the contrast is high and Contax 645 has only a centre weighted flash metering system so it tends to overexpose for such pictures. Not much can be done except either to bracket or to under expose by half stop when close up or when high contrast expected. You can try to see if this works.
 
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