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Kermit.
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Bernice

MTF curve looks very questionable, red -vs- green lines appears to be reversed. And.. notice the curve is well falling off at 21mm distance from center.. Again, this lens might illuminate 4x5 which...

Circle of illumination or circle of designed in optical performance? At what aperture? How much camera movement?

Lens ability to produce illumination for a given film size does not mean or define...

IMOV, there is a limit to what lenses and all that Foto related hardware can possibly do for any image.

This discussion begins to head into the age old photography divide where some image makers...

Question becomes.. why bother with the Elmar 135mm to 4x5?
What possible advantage could this lens have over other lenses that are specifically designed for 4x5?

Bernice

Majority of lenses are in barrel. No shutter to be concerned with. Sticky aperture rings that are sticky when the lens has ben choose get the attention needed to resolve this problem.

After the...

At head-shoulder imaging distances the 12" portrait Ektar is ok on 8x10. At distances greater than typical head-shoulder taking distances to infinity, the image results will be different.

IMO,...

Strictly related to focal length for head-shoulder portraits on 8x10.. 12" is IMO too short.

Min of 14" is needed. That 2" difference in focal length does not appear to be that much on paper.. on...

What are your image goals with 8x10 and Portrait Ektar?

History to what is likely the Kodak recommendation comes from the time when studio portrait photography with sorta-focus (soft focus) was...

Second tripod or similar should not be needed with 12" or so of bellows and camera extension if the camera can be balanced at its point of support and the camera has eight rigidity-stability as...

Having owned and used the 150mm f8 SW Nikkor & 155mm f6.8 Rodenstock Grandagon in the past (late 80's to 90's) petered the 8x10 images from the Grandagon. Yet both could benefit from a center filter...

Yes, if the filter or step ring is stuck. Device like a tie-wrap when used properly can work as a strap wrench applying aprox equal force on the circular filter/step ring to aid in removal. Adding a...

Aluminum has a fond tendency to gall. Add to this problem, the common anodized aluminum is porous with a hard-rough surface that is also fond of seizing onto what it is threaded on. Adding more to...

All of the non-LF lenses get a lens protector-UV filter as the way these lenses and cameras are used is different than a view camera.
That said, It remains a good idea to leave a lens protector-UV...

Or modify this camera to allow a LOT more bellows and camera extension that does not involve using an extender lens cone.

Or get another camera that has no real limits on camera extension or...

Simply add enough bellows and camera extension with your current lens being used.. then position the camera set up and lens as needed.

~Easily fill the entire plate. Camera is the real issue here,...

Heh.. Got one of those "wok" Norman 200B series reflectors too. Norman made a series of reflectors and add on for the 200B series like the flash bulb riser to widen the angle of light. This would be...

Who are "They" ?

IMO, Fujinon C is good, but not better than lenses of similar design and vintage of production.


Bernice

Yes. This is a good starting point for soft box size. Of the soft boxes used back in the day, Broncolor light boxes are GOOD. The other light box that worked GOOD, Plume Wafer with the inner diffuser...

Been there done this... will be curious as to the results..

Strobe heads and their light source is not small. Keep in mind these strobe heads are designed for much larger subjects. Alternative is...

Another example of camera limiting what is needed lens wise to achieve image goals.


Bernice

Not just lens or focal length. Using a camera with limited bellows and extension of aprox 14" and lenses in aprox 100mm (4") to 180mm (7") focal length will put the camera-lens aprox 150mm (~6") to...

Get a reasonable 3.5 digit digital volt meter. These can be had for not a lot these days ($10-$20). Check the battery voltage with the DVM. Fully charged "12Volt" lead acid battery will read about...

"white" LEDs typically do not have broad spectrum since the "white" light they produce comes from Red-Green-Blue narrower spectrum LEDs combined with phosphors to produce what is perceived as white...

For outdoor "natural light" images, shading the lens using the dark slide or similar works good. Nothing fancy, just functional as lugging more stuff around is not really needed in this case.

For...

With all the 200B talk, decided to dig out the 200B that was in storage. Not been used in many years. Battery is beyond knackered. The adhesive used to hold the battery pack together failed allowing...

Norman 200B, they remain one of the better built, durable and repairable "portable" strobe units made. These were from a time when market demands supported strobe units built this way at a $.
...

Long ago LF was most often for working photographers trying to make a living with higher quality images. Long ago there was a significant market for high quality and artistic images. Many were driven...

ALL of the f5.6 Plasmats from the big four (Fujinon, Rodenstock, Nikon, Schneider) are far more similar than different. There are slight differences, but essentially more the same than different.
...

That would be a 180mm Dagor, not gonna cover 8x10.

Do not believe the marketing "literature" as that is from a time when over rating the image circle was a very effective marketing deception.
The...

Not a lot wrong with the 240mm Fujinon A if it meets what you need. Should be fine at infinity and to life size 1 to 1. Your Toyo has enough bellows to work at life size making the other challenges...

8 1/4" Dagor, just covers 8x10.. stopped down good past f22 at that. The 6.5" wide angle Dagor does cover 8x10 and it is small.

Brings up again the difficulty with 8x10 and wide angle lenses. IMO,...

With either a 150mm or 240mm lens distortion at "macro" reproduction ratios are a non-issue If the lens used is an APO process lens (dialyte formula, APO artar, APO ronar, APO nikkor and similar)....

Another vote for Toyo film holders... they are simply GOOD.


Bernice

Depends on how much color change is desired in the finished print. Do keep in mind bring dry down change before selenium toning.

One way to deal with this is to make the finished print dry....

One of the oddity accessories Sinar made that might prompt the question, why was it ever made?

Some time ago, the question was posted about using a view camera as part of a video production...

Likely different for folks entering LF today than it was back in the early 1980's when my first Sinar F outfit happened. Back then film was mostly it, 4x5 color transparencies were the road to...

The 5x7 arca came from Kerry. After the try, that 5x7 arca found another home as the original 5x7 arca. All the modified parts got removed and are still here some where in a box.

What is nice...

Yes, the only exception that worked out really GOOD was installing the Sinar front frame onto a Toyo 810M. This allowed using the sinar shutter between the bellows and front frame with no...

neil poulsen

From the photos, it looks like you were attempting to mount the Sinar shutter onto the rear of the front standard. But, you speak of mounting the Sinar shutter onto the front of the...